@incollection{KrugBittnerRolfesetal., author = {Krug, Henriette and Bittner, Uta and Rolfes, Vasilija and Fangerau, Heiner and Weber, Karsten}, title = {Verunsicherung des {\"a}rztlichen Selbstverst{\"a}ndnisses durch K{\"u}nstliche Intelligenz? Ein {\"U}berblick {\"u}ber potenzielle Auswirkungen ihres Einsatzes im {\"a}rztlichen Alltag}, series = {Unsicherheit in der Medizin ; zum Umgang mit Ungewissheit im Gesundheitswesen}, booktitle = {Unsicherheit in der Medizin ; zum Umgang mit Ungewissheit im Gesundheitswesen}, editor = {Frewer, Andreas and Bergemann, Lutz and Langmann, Elisabeth}, publisher = {K{\"o}nigshausen \& Neumann}, address = {W{\"u}rzburg}, isbn = {978-3-8260-7226-0}, pages = {195 -- 210}, language = {de} } @article{KrugGerhardsBittneretal., author = {Krug, Henriette and Gerhards, Helene and Bittner, Uta and Scorna, Ulrike and Kaufner, Nicla and Kokott, Linda Ellen and Rolfes, Vasilija and Fangerau, Heiner and Weber, Karsten}, title = {Einwilligungsf{\"a}hig oder nicht? Zur Praxis der Pr{\"u}fung von Einwilligungsf{\"a}higkeit im klinischen Alltag und deren Herausforderungen}, series = {Zeitschrift f{\"u}r Evidenz Fortbildung und Qualit{\"a}t im Gesundheitswesen}, volume = {171}, journal = {Zeitschrift f{\"u}r Evidenz Fortbildung und Qualit{\"a}t im Gesundheitswesen}, number = {August}, publisher = {Elsevier}, doi = {10.1016/j.zefq.2022.04.030}, pages = {20 -- 30}, abstract = {Die Einwilligungsf{\"a}higkeit (EWF) von Patient*innen ist eine unabdingbare Voraussetzung der informierten Zustimmung zu medizinischen Maßnahmen. Im Fall von Zweifeln an der EWF ist daher eine sorgf{\"a}ltige {\"a}rztliche Pr{\"u}fung und Beurteilung erforderlich. Trotz einer breiten theoretischen Diskussion {\"u}ber die Konzeption von EWF sowie m{\"o}gliche Vorgehensweisen zu ihrer Pr{\"u}fung mangelt es im klinischen Alltag oft an verbindlichen standardisierten Verfahrensvorgaben, sodass die Ergebnisse der EWF-Einsch{\"a}tzung interdisziplin{\"a}r wie interindividuell uneinheitlich ausfallen. Um die Qualit{\"a}t der EWF-Beurteilung verbessern zu k{\"o}nnen, bedarf es daher genauerer Kenntnisse {\"u}ber die Praxis sowie Schwierigkeiten bei der Pr{\"u}fung von EWF. Mit dem Ziel, einen Einblick in die konkreten Vorgehensweisen und Schwierigkeiten von Klinik{\"a}rzt*innen bei der Beurteilung der EWF zu erlangen, wurde eine explorative Telefonumfrage durchgef{\"u}hrt, in der die Teilnehmer*innen nach der Gewichtung der einzelnen Voraussetzungen von EWF sowie den Schwierigkeiten bei deren Pr{\"u}fung befragt wurden. Methoden Im Rahmen eines „convenience samplings" wurden fragebogenbasierte strukturierte Telefon-Interviews mit 26 an deutschen Kliniken t{\"a}tigen {\"A}rzt*innen aus den Fachbereichen Neurologie, An{\"a}sthesiologie, Chirurgie, Innere Medizin, Gyn{\"a}kologie und rekonstruktive/{\"a}sthetische Chirurgie durchgef{\"u}hrt. Die Antworten wurden im Paper-and-Pencil-Verfahren dokumentiert, Antworten auf offene Fragen mit Hilfe thematischer Codierungen zusammengefasst und computergest{\"u}tzt ausgewertet. Ergebnisse Die Mehrheit der Befragten gab manchmal bis sehr h{\"a}ufig vorkommende Zweifel an der EWF ihrer Patient*innen an, wobei deren Pr{\"u}fung vornehmlich in individueller Vorgehensweise ohne formalisierte, standardisierte Vorgaben erfolgte. In der Frage nach der Gewichtung der sieben im Fragebogen vorgeschlagenen kognitiv sowie emotional basierten Beurteilungskriterien wurden diese {\"u}berwiegend innerhalb des Spektrums von „teilweise wichtig" bis „sehr wichtig" beurteilt. Schwierigkeiten bei der Beurteilung wurden in Bezug auf die Patient*innen selbst, das Verh{\"a}ltnis zwischen {\"A}rzt*innen und Patient*innen sowie die Situation der Beurteilung angegeben. Die Wahrnehmung von Schwierigkeiten bei der Pr{\"u}fung erfolgt dabei offenbar unabh{\"a}ngig von der Relevanz, die dem jeweiligen Kriterium f{\"u}r die EWF zugeschrieben wird. Diskussion und Schlussfolgerung Insgesamt zeigen die Ergebnisse eine hohe Zustimmung zu der Relevanz der abgefragten sieben EWF-Kriterien, allerdings wurden zugleich diverse Schwierigkeiten bei ihrer tats{\"a}chlichen {\"U}berpr{\"u}fung deutlich. Ein Teil der Befragten w{\"u}nscht sich mehr Unterst{\"u}tzung bei der Bestimmung der EWF. Die Befragungsergebnisse st{\"u}tzen die Forderung, dass in diesem sensiblen medizinischen Kontext eine pr{\"a}zise Ausbildung und ausreichende zeitliche Ressourcen unbedingt erforderlich sind.}, language = {de} } @article{MaurerSaiboldGerletal., author = {Maurer, Julia and Saibold, Anna and Gerl, Katharina and Koller, Michael and K{\"o}lbl, Oliver and Pukrop, Tobias and Windschuettl, Sandra and Einhell, Sabine and Herrmann-Johns, Anne and Raptis, Georgios and Mueller, Karolina}, title = {Systematic development of a patient-reported ONCOlogical-ROUTinE-Screening (ONCO-ROUTES) procedure at the University Cancer Center Regensburg}, series = {Journal of Cancer Research and Clinical Oncology}, volume = {150}, journal = {Journal of Cancer Research and Clinical Oncology}, number = {9}, publisher = {Springer Science and Business Media LLC}, issn = {1432-1335}, doi = {10.1007/s00432-024-05955-4}, abstract = {Purpose The evaluation of treatment success and progression in oncology patient-reported outcomes (PROs) is playing an increasingly important role. Meanwhile, PROs are a component of the certification requirements of the German Cancer Society for oncology centers. PROs are used to provide supportive therapy. There is currently no instrument that fully covers the requirements. At the University Hospital Regensburg (UKR), a digital ONCOlogical-ROUTinE-Screening (ONCO-ROUTES) procedure was developed in order to assess the need for supportive therapy in a standardized way and to provide patients with supportive interventions tailored to their needs. Methods On the basis of current requirements and guidelines, the development of ONCO-ROUTES was supported by experts in focus groups and interviews, and digitalization was carried out in connection with the IT infrastructure. Results A Needs-based, Quality-of-life (QoL) and Symptoms Screening (NQS2) tool already established in the routine at the UKR was further developed into ONCO-ROUTES, which is made up of the domains therapy phase, nutrition, tobacco use, alcohol use, quality of life, general condition/functional status, physical activity, psychooncology, social services, and further support needs. By linking the digitized questionnaire to the hospital information system, the results are available for immediate use in routine operations and thus for the referral of patients for further supportive therapy. Conclusion The digital PRO application ONCO-ROUTES is designed to involve patients in monitoring additional supportive needs and thus, improves supportive interdisciplinary treatment.}, language = {en} } @article{LaufSchmiederVolynec, author = {Lauf, Wolfgang and Schmieder, G. and Volynec, I. A.}, title = {The automorphism space Σ(G) of a domain without punctiform prime ends}, series = {The Journal of Geometric Analysis}, volume = {10}, journal = {The Journal of Geometric Analysis}, number = {4}, publisher = {Springer}, issn = {1050-6926}, doi = {10.1007/BF02921993}, pages = {697 -- 712}, abstract = {Let G ⊆ ℂ be a simply connected domain and let Σ (G) be its group of conformal automorphisms with the topology of uniform chordal convergence on G. In 1984 Gaier raised the question whether the connectedness of the space Σ (G) implies that the domain G has only punctiform prime ends. As a contribution to answering this question in this paper the authors use suitable spike Junctions to construct a bounded domain without any punctiform prime end such that its automorphism space Σ (G) is not discrete, but totally disconnected.}, language = {en} } @inproceedings{GreinerCurrleEttletal., author = {Greiner, Nina and Currle, Edda and Ettl, Katrin and Frommeld, Debora and Haug, Sonja and Kudienko, Natalie and Lauer, Norina and Lichtenauer, Norbert and Meussling-Sentpali, Annette and Middel, Luise and Mohr, Christa and Pfingsten, Andrea and Popp, Christof and Raptis, Georgios and Weber, Karsten}, title = {Technik im Alltag - Technik zum Leben : Telepr{\"a}senzgest{\"u}tzte Pflege und Therapie bei Schlaganfallpatient*innen}, series = {Kann Digital Pflege?: Clusterkonferenz ,,Zukunft der Pflege", 3., September 2020, N{\"u}rnberg}, volume = {Konferenzband Teil 1}, booktitle = {Kann Digital Pflege?: Clusterkonferenz ,,Zukunft der Pflege", 3., September 2020, N{\"u}rnberg}, address = {K{\"o}nigstetten, {\"O}sterreich}, issn = {2710-3048}, pages = {57 -- 61}, abstract = {Vorgestellt wird das Forschungsvorhaben des interdisziplin{\"a}ren Forschungsprojekts „DeinHaus 4.0 - Telepr{\"a}senzroboter f{\"u}r die Pflege und Unterst{\"u}tzung von Schlaganfallpatientinnen und -patienten (TePUS)". {\"U}ber geeignete Robotersysteme sollen den Proband*innen individuell abgestimmte Angebote aus den Bereichen Telenursing und Teletherapie zur Verf{\"u}gung gestellt werden. Hierbei werden einerseits Telepr{\"a}senzsitzungen durchgef{\"u}hrt, anderseits kommen verschiedene Apps zum Einsatz. Die Interventionen werden mittels eines Mixed-Methods-Ansatzes evaluiert. Begleitend werden Technikakzeptanz und Nutzungsbereitschaft untersucht.}, subject = {Schlaganfall}, language = {de} } @unpublished{FrummetSlanyAmlingetal., author = {Frummet, Alexander and Slany, Emanuel and Amling, Jonas and Lang, Moritz and Scheele, Stephan}, title = {Explainable information retrieval in the audit domain}, doi = {10.48550/arXiv.2507.03479}, pages = {4}, abstract = {Conversational agents such as Microsoft Copilot and Google Gemini assist users with complex search tasks but often generate misleading or fabricated references. This undermines trust, particularly in high-stakes domains such as medicine and finance. Explainable information retrieval (XIR) aims to address this by making search results more transparent and interpretable. While most XIR research is domain-agnostic, this paper focuses on auditing -- a critical yet underexplored area. We argue that XIR systems can support auditors in completing their complex task. We outline key challenges and future research directions to advance XIR in this domain.}, language = {en} } @article{WeberFrommeldGerhardsetal., author = {Weber, Karsten and Frommeld, Debora and Gerhards, Helene and Krug, Henriette and Kokott, Linda Ellen and Bittner, Uta}, title = {Speaking about enhancement - methodological issues and historical examples}, series = {American Journal of Bioethics Neuroscience}, volume = {11}, journal = {American Journal of Bioethics Neuroscience}, number = {4}, doi = {10.1080/21507740.2020.1831650}, pages = {254 -- 256}, language = {en} } @inproceedings{MuehlhausenGomezLaueretal., author = {M{\"u}hlhausen, Sara and Gomez, Sarah and Lauer, Norina and Baumann, Timo}, title = {Cross lingual transfer learning does not improve aphasic speech recognition}, series = {Elektronische Sprachsignalverarbeitung 2025: Tagungsband der 36. Konferenz Halle/Saale, 05.-07. M{\"A}RZ 2025}, booktitle = {Elektronische Sprachsignalverarbeitung 2025: Tagungsband der 36. Konferenz Halle/Saale, 05.-07. M{\"A}RZ 2025}, editor = {Grawunder, Sven}, publisher = {TUDpress}, address = {Dresden}, isbn = {978-3-95908-803-9}, issn = {0940-6832}, doi = {10.35096/othr/pub-8051}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-80518}, pages = {8}, abstract = {In addressing the particular linguistic challenges posed by patients suffering from aphasia, a language disorder, this paper proposes a fine-tuning approach to enhance the speech recognition capabilities of existing models. The available aphasic research data in German is highly limited. To address this constraint, we propose a cross-lingual transfer approach to utilize English data to improve performance in German. This advancement aims to support the development of a therapy platform tailored for patients with aphasia. For the base speech recognition model, we choose to use OpenAI's Whisper model, and for fine-tuning, we make use of TalkBank's AphasiaBank. The experimental findings demonstrate that the transcription of aphasic audio with Whisper is less successful than non-aphasic audio. However, fine-tuning the transcription in the respective language resulted in an enhancement of its quality. In contrast, fine-tuning the transcription in another language and expecting a transfer of the learned aphasic speech properties led to a deterioration in its quality.}, subject = {Automatische Spracherkennung}, language = {en} } @article{EbnerFrikelLorenzetal., author = {Ebner, Andrea and Frikel, J{\"u}rgen and Lorenz, Dirk and Schwab, J. and Haltmeier, Markus}, title = {Regularization of inverse problems by filtered diagonal frame decomposition}, series = {Applied and Computational Harmonic Analysis}, volume = {62}, journal = {Applied and Computational Harmonic Analysis}, number = {January}, publisher = {Elsevier}, doi = {10.1016/j.acha.2022.08.005}, pages = {66 -- 83}, abstract = {Inverse problems are at the heart of many practical problems such as image reconstruction or nondestructive testing. A characteristic feature is their instability with respect to data perturbations. To stabilize the inversion process, regularization methods must be developed and applied. In this paper, we introduce the concept of filtered diagonal frame decomposition, which extends the classical filtered SVD to the case of frames. The use of frames as generalized singular systems allows a better match to a given class of potential solutions and is also beneficial for problems where the SVD is not analytically available. We show that filtered diagonal frame decompositions yield convergent regularization methods, derive convergence rates under source conditions and prove order optimality. Our analysis applies to bounded and unbounded forward operators. As a practical application of our tools, we study filtered diagonal frame decompositions for inverting the Radon transform as an unbounded operator on L2(R2).}, language = {en} } @misc{OPUS4-276, title = {Angewandte Forschung in der Wirtschaftsinformatik: Prozesse, Technologien, Anwendungen, Systeme und Management}, editor = {Barton, Thomas and Herrmann, Frank and Meister, Vera G. and M{\"u}ller, Christian and Seel, Christian}, publisher = {mana-Buch}, address = {Heide}, organization = {Arbeitskreis Wirtschaftsinformatik an Fachhochschulen (AKWI)}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-2767}, subject = {Wirtschaftsinformatik}, language = {de} } @misc{OPUS4-278, title = {Angewandte Forschung in der Wirtschaftsinformatik: Prozesse, Technologien, Anwendungen, Systeme und Management}, editor = {Barton, Thomas and Herrmann, Frank and Meister, Vera G. and M{\"u}ller, Christian and Seel, Christian}, publisher = {mana-Buch}, address = {Heide}, organization = {Arbeitskreis Wirtschaftsinformatikan Fachhochschulen (AKWI)}, doi = {10.15771/978-3-944330-56-3}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-2785}, language = {de} } @misc{OPUS4-280, title = {Angewandte Forschung in der Wirtschaftsinformatik}, editor = {Barton, Thomas and Herrmann, Frank and Meister, Vera G. and M{\"u}ller, Christian and Seel, Christian and Steffens, Ulrike}, publisher = {mana-Buch}, address = {Heide}, organization = {Arbeitskreis Wirtschaftsinformatik an Hochschulen f{\"u}r angewandte Wissenschaften}, doi = {10.15771/10.15771/978-3-944330-59-4}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-2809}, subject = {Wirtschaftsinformatik}, language = {de} } @misc{OPUS4-286, title = {Angewandte Forschung in der Wirtschaftsinformatik 2019}, editor = {Wolf, Martin R. and Barton, Thomas and Herrmann, Frank and Meister, Vera G. and M{\"u}ller, Christian and Seel, Christian}, publisher = {mana-Buch}, address = {Heide}, organization = {Arbeitskreis Wirtschaftsinformatik an Hochschulen f{\"u}r Angewandte Wissenschaften im deutschsprachigen Raum (AKWI)}, doi = {10.15771/978-3-944330-62-4}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-2864}, subject = {Wirtschaftsinformatik}, language = {de} } @inproceedings{GoeppelFrikelHaltmeier, author = {G{\"o}ppel, Simon and Frikel, J{\"u}rgen and Haltmeier, Markus}, title = {Data-proximal Neural Networks for Limited-view CT}, series = {Bildverarbeitung f{\"u}r die Medizin 2025 : Proceedings, German Conference on Medical Image Computing, Regensburg March 09-11, 2025}, booktitle = {Bildverarbeitung f{\"u}r die Medizin 2025 : Proceedings, German Conference on Medical Image Computing, Regensburg March 09-11, 2025}, editor = {Palm, Christoph and Breininger, Katharina and Deserno, Thomas M. and Handels, Heinz and Maier, Andreas and Maier-Hein, Klaus H. and Tolxdorff, Thomas M.}, publisher = {Springer Fachmedien Wiesbaden}, address = {Wiesbaden}, isbn = {978-3-658-47421-8}, doi = {10.1007/978-3-658-47422-5_41}, pages = {185 -- 190}, abstract = {Limited-angle computed tomography (CT) requires solving an inverse problem that is both ill-conditioned and underdetermined. In recent years, learned reconstruction methods have proven highly effective in addressing this challenge. Most of these methods follow a two-step process: first, an initial reconstruction method is applied to the data to generate an auxiliary reconstruction; second, a neural network is used to map the auxiliary reconstruction closer to the ground truth images. However, when applied to unseen data, there are no guarantees that the network's output will remain consistent with the available measurement data. To address this, we recently introduced a data-proximal network architecture. In this paper, we implement this approach for limited-angle CT and compare its performance with a standard residual network and a null space network.}, language = {en} } @inproceedings{SeligBauerFrikeletal., author = {Selig, Tim and Bauer, Patrick and Frikel, J{\"u}rgen and M{\"a}rz, Thomas and Storath, Martin and Weinmann, Andreas}, title = {Two-stage Approach for Low-dose and Sparse-angle CT Reconstruction using Backprojection}, series = {Bildverarbeitung f{\"u}r die Medizin 2025 (BVM 2025): Proceedings, German Conference on Medical Image Computing, Regensburg March 09-11, 2025}, booktitle = {Bildverarbeitung f{\"u}r die Medizin 2025 (BVM 2025): Proceedings, German Conference on Medical Image Computing, Regensburg March 09-11, 2025}, editor = {Palm, Christoph and Breininger, Katharina and Deserno, Thomas M. and Handels, Heinz and Maier, Andreas and Maier-Hein, Klaus H. and Tolxdorff, Thomas M.}, publisher = {Springer VS}, address = {Wiesbaden}, isbn = {978-3-658-47421-8}, doi = {10.1007/978-3-658-47422-5_67}, pages = {286 -- 291}, abstract = {This paper presents a novel two-stage approach for computed tomography (CT) reconstruction, focusing on sparse-angle and low-dose setups to minimize radiation exposure while maintaining high image quality. Two-stage approaches consist of an initial reconstruction followed by a neural network for image refinement. In the initial reconstruction, we apply the backprojection (BP) instead of the traditional filtered backprojection (FBP). This enhances computational speed and offers potential advantages for more complex geometries, such as fan-beam and cone-beam CT. Additionally, BP addresses noise and artifacts in sparse-angle CT by leveraging its inherent noise-smoothing effect, which reduces streaking artifacts common in FBP reconstructions. For the second stage, we fine-tune the DRUNet proposed by Zhang et al. to further improve reconstruction quality. We call our method BP-DRUNet and evaluate its performance on a synthetically generated ellipsoid dataset alongside thewell-established LoDoPaBCT dataset. Our results show that BP-DRUNet produces competetive results in terms of PSNR and SSIM metrics compared to the FBP-based counterpart, FBPDRUNet, and delivers visually competitive results across all tested angular setups.}, language = {en} } @article{HillebrandWestnerMatschi, author = {Hillebrand, Patrick and Westner, Markus and Matschi, Markus}, title = {Schl{\"u}sselfaktoren erfolgreicher CIOs}, series = {HMD Praxis der Wirtschaftsinformatik}, volume = {59}, journal = {HMD Praxis der Wirtschaftsinformatik}, publisher = {Springer Nature}, doi = {10.1365/s40702-022-00867-8}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-33751}, pages = {762 -- 779}, abstract = {Die vorliegende Studie untersucht Schl{\"u}sselfaktoren erfolgrei- cher CIOs in deutschen Großunternehmen. Mit einer mittleren Verweildauer (Median) von 4,0 Jahren weisen deutsche CIOs, die mit 43 \% noch {\"u}berwiegend an den CFO berichten, im Vergleich zu anderen C-Level-Positionen eine deutlich k{\"u}rzere Verweildauer im Amt auf. Die Ergebnisse aus 60 Interviews mit erfolgreichen deutschsprachigen CIOs, die prim{\"a}r {\"u}ber eine {\"u}berdurchschnittlich lange Verweildauer verf{\"u}gen, lassen verschiedene Schl{\"u}sselfaktoren f{\"u}r den Erfolg erkennen: Grundvoraussetzung ist stets die Gew{\"a}hrleistung eines sicheren und effizienten IT-Betriebs. {\"U}ber effektive und innovative Change-Projekte machen die interviewten CIOs den IT-Mehrwert transparent und agieren als Br{\"u}ckenbauer zwischen IT und Fachbereichen. Dadurch wirken sie positiv auf die Firmenkultur ein und etablieren die IT nachhaltig in den Fachbereichen als Erfolgsfaktor. Erfolgreiche CIOs selbst sind keine „Techies", sondern zeichnen sich durch hohe F{\"u}hrungskompetenz und ein hohes Gesch{\"a}ftsverst{\"a}ndnis, gepaart mit vision{\"a}rem Denken aus. Dadurch gelingt es ihnen, die IT zukunftsorientiert auszurichten und Anforderungen und Potenziale f{\"u}r und aus den Fachbereichen fr{\"u}hzeitig zu antizipieren. Die zuk{\"u}nftige Entwicklung der CIO-Organisation und der Paradigmen in der IT wird durch die Studienteilnehmer hingegen teilweise kontrovers diskutiert - so gibt es beispielsweise bei der Beurteilung der Sinnhaftigkeit und Relevanz der CDO-Position noch kein einheitliches Meinungsbild.}, language = {de} } @article{HillebrandWestnerMatschi, author = {Hillebrand, Patrick and Westner, Markus and Matschi, Markus}, title = {Key factors of successful CIOs}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-66882}, pages = {22}, abstract = {This study examines key factors of successful CIOs in large German companies. With a median tenure of 4.0 years, German CIOs, most of whom (43\%) still report to the CFO, have a significantly shorter tenure compared to other C‑level positions. The results of 60 interviews with successful German-speaking CIOs, who primarily have an above-average tenure, reveal various key factors for successful CIOs: The foundation for success is to ensure secure and efficient IT operations. Through effective and innovative change pro-jects, the CIOs interviewed make the added value of IT transparent and act as bridge-builders between IT and the business. In this way, they have a positive impact on the corporate culture and establish IT as a success factor in the business in the long term. Successful CIOs themselves are not "techies" but are characterized by a high level of leadership competence and a high level of business expertise, coupled with visionary thinking. This enables them to align IT in a future-oriented manner and to anticipate de-mands and potential for and from the business units at an early stage. The future devel-opment of the CIO organization and the paradigms in IT, on the other hand, was discussed controversially by some of the study participants—for example, there is still no uniform opinion on the relevance of the CDO position.}, language = {en} } @misc{HornPippigRaptisetal., author = {Horn, L. C and Pippig, S. and Raptis, Georgios and Fischer, Uta and Kohler, U. and Hentschel, Bettina and Martin, Rosemarie}, title = {00083 PAI-1 AND UFA AS PARAMETERS OF TUMORASSOCIATED PROTEOLYSIS IN CERVICAL CARCINOMA}, series = {International Journal of Gynecologic Cancer}, volume = {15}, journal = {International Journal of Gynecologic Cancer}, number = {Suppl 2}, publisher = {BMJ}, issn = {1048-891X}, doi = {10.1136/ijgc-00009577-200509001-00083}, language = {en} } @article{SchuheggerKaraGalkaetal., author = {Schuhegger, Lukas and Kara, Sinan and Galka, Stefan and D{\"u}nnweber, Jan and Meißner, Sebastian}, title = {Umzugsplanung mit Fabrikdatenmodellen und Virtual Reality}, series = {Zeitschrift f{\"u}r wirtschaftlichen Fabrikbetrieb}, volume = {119}, journal = {Zeitschrift f{\"u}r wirtschaftlichen Fabrikbetrieb}, number = {11}, publisher = {de Gruyter}, issn = {2511-0896}, doi = {10.1515/zwf-2024-1154}, pages = {799 -- 804}, abstract = {Angesichts eines dynamischen industriellen Umfelds m{\"u}ssen produzierende Unternehmen flexibel bleiben und sich kontinuierlich anpassen, um ihre Wettbewerbsf{\"a}higkeit zu erhalten. Eine effektive Planung von Restrukturierungen in Produktionssystemen, oft als Umzugsplanung bezeichnet, ist entscheidend, um Verz{\"o}gerungen zu vermeiden und Stillstandszeiten zu minimieren. Die Identifikation von Umzugsf{\"a}llen, welche den Umfang umzuziehender Ressourcen wie Maschinen, Anlagen, Ausr{\"u}stungen und Arbeitspl{\"a}tzen beschreiben und die Definition zugeh{\"o}riger Aufgaben sind essenzielle Schritte der Umzugsplanung. Dieser Beitrag stellt eine Vorgehensweise zur Bestimmung von Umzugsf{\"a}llen mittels eines Fabrikdatenmodells vor, erg{\"a}nzt durch eine Visualisierung in Virtual Reality, um Planende bei der Umzugsplanung zu unterst{\"u}tzen.}, language = {de} } @inproceedings{FranzZuritaDiefenthaleretal., author = {Franz, Maja and Zurita, P{\´i}a and Diefenthaler, Markus and Mauerer, Wolfgang}, title = {Co-Design of Quantum Hardware and Algorithms in Nuclear and High Energy Physics}, series = {EPJ Web of Conferences}, volume = {295}, booktitle = {EPJ Web of Conferences}, publisher = {EDP Sciences}, doi = {10.1051/epjconf/202429512002}, abstract = {Quantum computing (QC) has emerged as a promising technology, and is believed to have the potential to advance nuclear and high energy physics (NHEP) by harnessing quantum mechanical phenomena to accelerate computations. In this paper, we give a brief overview of the current state of quantum computing by highlighting challenges it poses and opportunities it offers to the NHEP community. Noisy intermediate-scale quantum (NISQ) computers, while limited by imperfections and small scale, may hold promise for near-term quantum advantages when coupled with co-designed quantum algorithms and special-purpose quantum processing units (QPUs). We explore various applications in NHEP, including quantum simulation, event classification, and realtime experiment control, emphasising the potential of variational quantum circuits and related techniques. To identify current interests of the community, we perform an analysis of recent literature in NHEP related to QC.}, language = {en} } @misc{HaugLauerMeusslingSentpalietal., author = {Haug, Sonja and Lauer, Norina and Meussling-Sentpali, Annette and Mohr, Christa and Pfingsten, Andrea and Raptis, Georgios and Weber, Karsten and Bahr, Gudrun and Currle, Edda and Ettl, Katrin and Frommeld, Debora and Greiner, Nina and Kudienko, Natalie and Lichtenauer, Norbert and Middel, Luise and M{\"u}cke, Vanessa and Popp, Christof}, title = {Telepr{\"a}senzroboter f{\"u}r die Pflege und Unterst{\"u}tzung von Schlaganfallpatinnen und -patienten (TePUS)}, series = {Virtuelle Tagung "DeinHaus 4.0 Oberpfalz", 2020, Ostbayerische Technische Hochschule Regensburg}, journal = {Virtuelle Tagung "DeinHaus 4.0 Oberpfalz", 2020, Ostbayerische Technische Hochschule Regensburg}, language = {de} } @article{PolzGlawionGebissoetal., author = {Polz, Julius and Glawion, Luca and Gebisso, Hiob and Altenstrasser, Lukas and Graf, Maximilian and Kunstmann, Harald and Vogl, Stefanie and Chwala, Christian}, title = {Temporal Super-Resolution, Ground Adjustment, and Advection Correction of Radar Rainfall Using 3-D-Convolutional Neural Networks}, series = {IEEE Transactions on Geoscience and Remote Sensing}, volume = {62}, journal = {IEEE Transactions on Geoscience and Remote Sensing}, doi = {10.1109/TGRS.2024.3371577}, pages = {1 -- 10}, abstract = {Weather radars are highly sophisticated tools for quantitative precipitation estimation (QPE) and provide observations with unmatched spatial representativeness. However, their indirect measurement of precipitation high above ground leads to strong systematic errors compared to direct rain gauge measurements. Additionally, the temporal undersampling from 5-min instantaneous radar measurements requires advection correction. We present ResRadNet, a 3-D-convolutional residual neural network approach, to reduce these errors and, at the same time, increase the temporal resolution of the radar rainfall fields by a 5-min short-range prediction of 1-min time-steps. The network is trained to process spatiotemporal sequences of radar rainfall estimates from a composite product derived from 17 C-band weather radars in Germany. In contrast to previous approaches, we present a method that emphasizes the generation of spatiotemporally consistent and advection-corrected country-wide rainfall maps. Our approach significantly increased the Pearson correlation coefficient (PCC) of the radar product (from 0.63 to 0.74) and decreased the root mean squared error (mse) by 22\% when compared to 247 rain gauges at a 5-min resolution. An additional large-scale comparison to eight years of data from 1138 independent manual daily gauges confirmed that the improvement is robust and transferable to new locations. Overall, our study shows the benefits of using 3-D convolutional neural networks (CNNs) for weather radar rainfall estimation to provide 1-min, ground-adjusted, that is, bias-corrected with respect to on-ground sensors, and advection-corrected radar rainfall estimates.}, language = {en} } @inproceedings{HecknerFuchsRaabetal., author = {Heckner, Markus and Fuchs, Markus and Raab, F. and Wolff, Christian}, title = {Monitoring students' mobile app coding behavior data analysis based on IDE and browser interaction logs}, series = {IEEE Global Engineering Education Conference, EDUCON, 03-05 April 2014, Istanbul, Turkey}, booktitle = {IEEE Global Engineering Education Conference, EDUCON, 03-05 April 2014, Istanbul, Turkey}, publisher = {IEEE}, doi = {10.1109/EDUCON.2014.6826202}, pages = {892 -- 899}, abstract = {This paper describes a case study of assessing student's coding behavior and skills in a realistic development setting. Students had to solve typical programming problems in the context of app development for the Android platform using the Eclipse IDE. Data was analyzed using IDE as well as browser interaction logs. In addition, screen recordings of the students' interaction with the IDE provide further insight. In this paper we present the first results of our ongoing work.}, language = {en} } @techreport{KunhardtZerthEberletal., author = {Kunhardt, Horst and Zerth, J{\"u}rgen and Eberl, Inge and Flemming, Daniel and Hilbert, Josef and Weber, Karsten and Kohls, Niko and Rester, David and Engel, Lars and Engel, Christian}, title = {Hochschulinitiative f{\"u}r eine personenzentrierte und nachhaltige Gestaltung von Technik und Digitalisierung in der Pflege - Wege von der Anwendungsforschung zur Implementierung und Evaluierung in der Praxis und Lebenswelt}, doi = {10.13140/RG.2.2.32095.64160}, abstract = {The professors from universities and universities of applied sciences and their educational partners who support this initiative are all joined by a research agenda and a sense of responsibility, according to which it is essential for applied research to further explore the effects of technological assistance systems and digital solutions in and for realistic settings with theoretically and methodologically sound and scientific support, based on the highest possible level of evidence, and to make a contribution to evidence-based translation and transferability to society.}, language = {mul} } @article{ReichenederWestnerMatschi, author = {Reicheneder, Matthias and Westner, Markus and Matschi, Markus}, title = {IT-Near- und Offshoring in deutschen Großunternehmen: Aktueller Stand, Motive und Auswahlkriterien}, series = {HMD Praxis der Wirtschaftsinformatik}, journal = {HMD Praxis der Wirtschaftsinformatik}, publisher = {Springer Nature}, address = {Wiesbaden}, issn = {1436-3011}, doi = {10.1365/s40702-025-01150-2}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-79582}, pages = {19}, abstract = {Die vorliegende Studie untersucht die aktuelle IT-Near- und Offshoring-Praxis in deutschen Großunternehmen. Daf{\"u}r wurden 33 CIOs und IT-F{\"u}hrungskr{\"a}fte mittels Interviews befragt. Haupttreiber der geografischen Verlagerung von IT-Services ins Ausland ist die Ressourcenverf{\"u}gbarkeit in anderen L{\"a}ndern, bedingt durch den Fachkr{\"a}ftemangel in Deutschland. Dies trifft auch auf die Auswahl geeigneter IT-Services f{\"u}r das Near- und Offshoring zu. W{\"a}hrend IT-Near- und Offshoring historisch prim{\"a}r aufgrund von Kosteneinsparungen initiiert wurde, spielt dieser Aspekt heute eine untergeordnete Rolle. Die Interviewteilnehmer und -teilnehmerinnen sehen in Kosteneinsparungen zwar immer noch einen positiven Effekt, erwarten aber, dass dieser in Zukunft aufgrund der Angleichung des Kostenniveaus schwinden wird. Die Unternehmen verlagern haupts{\"a}chlich Applikationsbetrieb und -entwicklung, erkennen jedoch zunehmend das Potenzial, auch h{\"o}herwertige Aufgaben, z. B. Projektmanagement und Unternehmensarchitekturmanagement, aus geografisch entfernteren L{\"a}ndern erbringen zu lassen. Unternehmen, die ausschließlich IT-Nearshoring betreiben, erbringen weniger als ein Drittel ihrer IT-Services aus nahegelegenen L{\"a}ndern. Firmen mit IT-Offshoring-Pr{\"a}senzen weisen einen h{\"o}heren IT-Near‑/Offshoringgrad auf und verlagern knapp die H{\"a}lfte der eigenen IT-Serviceerbringung ins Ausland. Die beliebtesten L{\"a}nder sind Portugal f{\"u}r das Nearshoring und Indien f{\"u}r das Offshoring.}, language = {de} } @article{MauererJoblinTamburrietal., author = {Mauerer, Wolfgang and Joblin, Mitchell and Tamburri, Damian and Paradis, Carlos and Kazman, Rick and Apel, Sven}, title = {In Search of Socio-Technical Congruence: A Large-Scale Longitudinal Study}, series = {IEEE Transactions on Software Engineering (TSE)}, volume = {48}, journal = {IEEE Transactions on Software Engineering (TSE)}, number = {8}, publisher = {IEEE}, doi = {10.1109/TSE.2021.3082074}, pages = {3159 -- 3184}, abstract = {This paper describes a large-scale empirical study investigating the relevance of socio-technical congruence over key basic software quality metrics, namely, bugs and churn. That is, we explore whether alignment or misalignment of social communication structures and technical dependencies in large software projects influences software quality. To this end, we have defined a quantitative and operational notion of socio-technical congruence, which we call /socio-technical motif congruence/ (STMC). STMC is a measure of the degree to which developers working on the same file or on two related files, need to communicate. As socio-technical congruence is a complex and multi-faceted phenomenon, the interpretability of the results is one of our main concerns, so we have employed a careful mixed-methods statistical analysis. In particular, we provide analyses with similar techniques as employed by seminal work in the field to ensure comparability of our results with the existing body of work. The major result of our study, based on an analysis of 25 large open-source projects, is that STMC is /not/ related to project quality measures---software bugs and churn---in any temporal scenario. That is, we find no statistical relationship between the alignment of developer tasks and developer communications on one hand, and project outcomes on the other hand. We conclude that, wherefore congruence does matter as literature shows, then its measurable effect lies elsewhere.}, language = {en} } @misc{HaugLauerMeusslingSentpalietal., author = {Haug, Sonja and Lauer, Norina and Meussling-Sentpali, Annette and Mohr, Christa and Pfingsten, Andrea and Raptis, Georgios and Weber, Karsten and Bahr, Gudrun and Currle, Edda and Ettl, Katrin and Frommeld, Debora and Greiner, Nina and Kudienko, Natalie and Lichtenauer, Norbert and Middel, Luise and M{\"u}cke, Vanessa and Popp, Christof}, title = {TePUS - Telepr{\"a}senzroboter f{\"u}r die Pflege}, series = {TRIOKON 2020 : Wissenschaft, Wirtschaft, Gesellschaft in Ostbayern, 29.09.2019, Landshut}, journal = {TRIOKON 2020 : Wissenschaft, Wirtschaft, Gesellschaft in Ostbayern, 29.09.2019, Landshut}, language = {de} } @inproceedings{GabrielWittmannHackeretal., author = {Gabriel, Christian and Wittmann, Christoffer and Hacker, B. and Mauerer, Wolfgang and Huntington, E. and Sabuncu, M. and Marquardt, Christoph and Leuchs, Gerd}, title = {A high-speed secure quantum random number generator based on vacuum states}, series = {IEEE/OSA Conference on Lasers and Electro-Optics (CLEO), 06-11 May 2012, San Jose CA USA}, booktitle = {IEEE/OSA Conference on Lasers and Electro-Optics (CLEO), 06-11 May 2012, San Jose CA USA}, publisher = {Optical Society of America}, abstract = {A high-speed continuous-variable quantum random bit generator with an expected effective bit generation rate of up to 10 GBit/s is presented. The obtained bit sequences are truly random and unique, i.e. they cannot be known by an adversary.}, language = {en} } @phdthesis{Ramsauer, author = {Ramsauer, Ralf}, title = {OSS Architecture for Mixed-Criticality Systems}, publisher = {Leibniz Universit{\"a}t Hannover}, pages = {188}, abstract = {Computer-based automation in industrial appliances led to a growing number of logically dependent, but physically separated embedded control units per appliance. Many of those components are safety-critical systems, and require adherence to safety standards, which is inconsonant with the relentless demand for features in those appliances. Features lead to a growing amount of control units per appliance, and to a increasing complexity of the overall software stack, being unfavourable for safety certifications. Modern CPUs provide means to revise traditional separation of concerns design primitives: the consolidation of systems, which yields new engineering challenges that concern the entire software and system stack. Multi-core CPUs favour economic consolidation of formerly separated systems with one efficient single hardware unit. Nonetheless, the system architecture must provide means to guarantee the freedom from interference between domains of different criticality. System consolidation demands for architectural and engineering strategies to fulfil requirements (e.g., real-time or certifiability criteria) in safety-critical environments. In parallel, there is an ongoing trend to substitute ordinary proprietary base platform software components by mature OSS variants for economic and engineering reasons. There are fundamental differences of processual properties in development processes of OSS and proprietary software. OSS in safety-critical systems requires development process assessment techniques to build an evidence-based fundament for certification efforts that is based upon empirical software engineering methods. In this thesis, I will approach from both sides: the software and system engineering perspective. In the first part of this thesis, I focus on the assessment of OSS components: I develop software engineering techniques that allow to quantify characteristics of distributed OSS development processes. I show that ex-post analyses of software development processes can be used to serve as a foundation for certification efforts, as it is required for safety-critical systems. In the second part of this thesis, I present a system architecture based on OSS components that allows for consolidation of mixed-criticality systems on a single platform. Therefore, I exploit virtualisation extensions of modern CPUs to strictly isolate domains of different criticality. The proposed architecture shall eradicate any remaining hypervisor activity in order to preserve realtime capabilities of the hardware by design, while guaranteeing strict isolation across domains.}, language = {en} } @inproceedings{SchmidbauerWinterspergerLobeetal., author = {Schmidbauer, Lukas and Wintersperger, Karen and Lobe, Elisabeth and Mauerer, Wolfgang}, title = {Polynomial Reduction Methods and their Impact on QAOA Circuits}, series = {IEEE International Conference on Quantum Software (QSW), 7-13 July 2024, Shenzhen, China}, booktitle = {IEEE International Conference on Quantum Software (QSW), 7-13 July 2024, Shenzhen, China}, doi = {10.1109/QSW62656.2024.00018}, pages = {35 -- 45}, abstract = {Abstraction layers are of paramount importance in software architecture, as they shield the higher-level formulation of payload computations from lower-level details. Since quantum computing (QC) introduces many such details that are often unaccustomed to computer scientists, an obvious desideratum is to devise appropriate abstraction layers for QC. For discrete optimisation, one such abstraction is to cast problems in quadratic unconstrained binary optimisation (QUBO) form, which is amenable to a variety of quantum approaches. However, different mathematically equivalent forms can lead to different behaviour on quantum hardware, ranging from ease of mapping onto qubits to performance scalability. In this work, we show how using higher-order problem formulations (that provide better expressivity in modelling optimisation tasks than plain QUBO formulations) and their automatic transformation into QUBO form can be used to leverage such differences to prioritise between different desired non-functional properties for quantum optimisation. Based on a practically relevant use-case and a graph-theoretic analysis, we evaluate how different transformation approaches influence widely used quantum performance metrics (circuit depth, gates count, gate distribution, qubit scaling), and also consider the classical computational efforts required to perform the transformations, as they influence possibilities for achieving future quantum advantage. Furthermore, we establish more general properties and invariants of the transformation methods. Our quantitative study shows that the approach allows us to satisfy different trade-offs, and suggests various possibilities for the future construction of general-purpose abstractions and automatic generation of useful quantum circuits from high-level problem descriptions.}, language = {en} } @inproceedings{VoelklMelzerDuennweberetal., author = {V{\"o}lkl, Jakob and Melzer, Matthias and D{\"u}nnweber, Jan and Sarkar, Amitrajit}, title = {Dynamic Route Planning for a Data Collecting Luggage Transport Service}, series = {18th IEEE International Conference on Control \& Automation, June 18-21, 2024, Reykjav{\´i}k, Iceland}, booktitle = {18th IEEE International Conference on Control \& Automation, June 18-21, 2024, Reykjav{\´i}k, Iceland}, publisher = {IEEE}, abstract = {Control and Automation of services of the urban infrastructure offered to citizens and tourists are elementary parts of a smart city. But both rely on a stable supply of data from sensors spread across the whole city, e. g., the fill level sensors of waste bins needed for a waste management tool which we developed in a collaboration with the Regensburg city council for the on-demand collection of waste bins. Europe has a lot of historic cities like Regensburg with narrow streets and huge building walls, some made from granite and fieldstones, which often represents an insurmountable obstacle to wireless data transmission. The reduction of the road traffic volume poses an additional challenge for city planners. By means of networked planning and simulation software, the situation, state and efficiency of citywide logistic services can be monitored and optimized. In the course of such optimizations, we propose the combination of digital and logistic services. As an example, we show that monitoring state information, such as the waste bin fill levels, can be accomplished using the same vehicles and the same planning software, that is used for luggage transportation. Moreover, we describe how we adapted a solver for a variant of the TSP, namely the prize-collecting traveling salesman, to optimize the route planning dynamically.}, language = {en} } @unpublished{BorgFrikelJorgensenetal., author = {Borg, Leise and Frikel, J{\"u}rgen and J{\o}rgensen, Jakob Sauer and Quinto, Eric Todd}, title = {Theorems that Characterize Artifacts for Arbitrary Limited X-ray CT Data}, edition = {version 6}, abstract = {This article provides a mathematical classification of artifacts from arbitrary incom-plete X-ray tomography data when using the classical filtered backprojection algorithm. Usingmicrolocal analysis, we prove that all artifacts arise from points at the boundary of the data set.Our results show that, depending on the geometry of the data set boundary, two types of artifactscan arise: object-dependent and object-independent artifacts. The object-dependent artifacts aregenerated by singularities of the object being scanned and these artifacts can extend all along lines.This is a generalization of the streak artifacts observed in limited angle CT. The article also char-acterizes two new phenomena: the object-independent artifacts are caused only by the geometryof the data set boundary; they occur along lines if the boundary of the data set is not smooth andalong curves if the boundary of the data set is smooth. In addition to the geometric descriptionof artifacts, the article also provides characterizations of their strength in Sobolev scale in certaincases. Moreover, numerical reconstructions from simulated and real data are presented illustratingour theorems.This work is motivated by a reconstruction we present from a synchrotron data set in whichartifacts along lines appeared that were independent of the object.The results of this article apply to a wide range of well-known incomplete data problems, in-cluding limited angle CT and region of interest tomography, as well as to unconventional x-ray CTimaging setups. Some of those problems are explicitly addressed in this article, theoretically and numerically.}, language = {en} } @article{WalterSchmidtKoerkel, author = {Walter, Sebastian F. and Schmidt, Andreas and K{\"o}rkel, Stefan}, title = {Adjoint-based optimization of experimental designs with many control variables}, series = {Journal of Process Control}, volume = {24}, journal = {Journal of Process Control}, number = {10}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0959-1524}, doi = {10.1016/j.jprocont.2014.06.019}, pages = {1504 -- 1515}, abstract = {We propose a method for an efficient optimization of experimental designs, using a combination of discrete adjoint computations, Taylor arithmetic and matrix calculus. Compared to the state of the art of using finite differences or the forward mode of automatic differentiation, our proposed approach leads to a reduction of the relative temporal complexity from linear to constant time in the number of control variables and measurement weights. We demonstrate that the advantageous complexity results are not only of theoretical nature, but lead to significant speedups in practice as well. With our implementation we are very close to the theoretical bound of the cheap gradient principle. We present one academic (spatially discretized heat equation) and two industrial application examples (biochemical process/Diesel-oxidation catalysis process) where we achieve speedups that range between 10 and 100. In addition to our core results, we also describe an efficient adjoint approach for the treatment of differential algebraic equations and present adjoint formulas for constrained least-squares problems.}, language = {de} } @inproceedings{BorgJorgensenFrikeletal., author = {Borg, Leise and J{\o}rgensen, Jakob Sauer and Frikel, J{\"u}rgen and Quinto, Eric Todd and Sporring, Jon}, title = {Reducing artifacts from varying projection truncations}, series = {3rd International Conference on Tomography of Materials and Structures, Lund, Sweden, 26-30 June 2017, ICTMS2017-65-1}, booktitle = {3rd International Conference on Tomography of Materials and Structures, Lund, Sweden, 26-30 June 2017, ICTMS2017-65-1}, abstract = {We study samples with full and partial occlusion causing streak artifacts, and propose two mod-ifications of filtered backprojection for artifact removal. Data is obtained by the SPring-8 synchrotron using a monochromatic parallel-beam scan [1]. Thresholding in the sinogram segments the metal, resulting in edges on which we apply 1) a smooth transition, or 2) a Dirichlet boundary condition.}, language = {en} } @inproceedings{FrikelQuinto, author = {Frikel, J{\"u}rgen and Quinto, Eric Todd}, title = {Artifacts in limited view tomography}, series = {Oberwolfach Reports}, volume = {11}, booktitle = {Oberwolfach Reports}, number = {3}, editor = {Burger, Martin and Quinto, Eric Todd and Louis, Alfred K.}, doi = {10.4171/OWR/2014/37}, pages = {2047 -- 2114}, language = {en} } @incollection{BaumannHusseinMeyerSickendiek, author = {Baumann, Timo and Hussein, Hussein and Meyer-Sickendiek, Burkhard}, title = {Free Verse Prosodies: Identifying and Classifying Spoken Poetry Using Literary and Computational Perspectives (Rhythmicalizer)}, series = {Mixing Methods: Practical Insights from the Humanities in the Digital Age}, booktitle = {Mixing Methods: Practical Insights from the Humanities in the Digital Age}, editor = {Schneider, Birgit and L{\"o}ffler, Beate and Mager, Tino and Hein, Carola}, publisher = {Bielefeld University Press}, address = {Bielefeld}, doi = {10.1515/9783839469132-018}, pages = {167 -- 186}, abstract = {At least 80\% of modern and postmodern poems exhibit neither rhyme nor metrical schemes such as iamb or trochee. However, does this mean that they are free of any rhythmical features?TheUS American research onfree verse prosody claimsthe opposite: Modern poets like Whitman, the Imagists, the Beat poets and contemporary Slam poets have developed a postmetrical idea of prosody, using rhythmical features of everyday language, prose, and musical styles like Jazz or Hip Hop. It has spawned a large and complex variety intheir poetic prosodies which,however,appearto bemuchharderto quantify and regularize than traditional patterns. In our project, we examinethe largest portal for spoken poetry Lyrikline and analysed and classified such rhythmical patterns by using pattern recognition and classification techniques. We integrate a human-in-the-loop approach in which we interleave manual annotation with computational modelling and data-based analysis. Our results are integrated into the website of Lyrikline. Our follow-up project makes our research results available to a wider audience, in particular to high school-level teaching.}, language = {en} } @inproceedings{HuangMelzerDuennweber, author = {Huang, Wenfei and Melzer, Matthias and D{\"u}nnweber, Jan}, title = {Optimizing Smart Retail by Experiment Using an Online AI Model Exploration Interface}, series = {2024 Winter Simulation Conference (WSC), 15-18 December 2024, Orlando, FL, USA}, booktitle = {2024 Winter Simulation Conference (WSC), 15-18 December 2024, Orlando, FL, USA}, publisher = {IEEE}, doi = {10.1109/WSC63780.2024.10838897}, pages = {2631 -- 2642}, abstract = {Smart retail technologies save grocery store operators a lot of work. At the same time, these technologies produce valuable data for building sustainable and economical inventory management strategies. AI models can be trained for sales forecasting using the data. The forecasts support the provisioning of fresh food over the whole week and help reducing food waste. In this paper, we present a Web portal which we developed to allow grocery store operators experiments with AI models revealing interrelations between observed and anticipated customer behavior. Clickable diagrams facilitate the exploration of data sets combining historical data and synthetically generated data. Pricing and ordering can be adapted accordingly to the simulated forecasts. By means of a case study, we show that our simulations are not only useful for predicting future sales but for other smart retail tasks as well.}, language = {en} } @inproceedings{HoessParadisKazmanetal., author = {Hoess, Nicole and Paradis, Carlos and Kazman, Rick and Mauerer, Wolfgang}, title = {Does the Tool Matter? Exploring Some Causes of Threats to Validity in Mining Software Repositories}, series = {2025 IEEE International Conference on Software Analysis, Evolution and Reengineering (SANER), Montreal, QC, Canada, March, 4-7, 2025}, booktitle = {2025 IEEE International Conference on Software Analysis, Evolution and Reengineering (SANER), Montreal, QC, Canada, March, 4-7, 2025}, publisher = {IEEE}, isbn = {979-8-3315-3510-0}, doi = {10.1109/SANER64311.2025.00067}, pages = {645 -- 656}, abstract = {Software repositories are an essential source of information for software engineering research on topics such as project evolution and developer collaboration. Appropriate mining tools and analysis pipelines are therefore an indispensable precondition for many research activities. Ideally, valid results should not depend on technical details of data collection and processing. It is, however, widely acknowledged that mining pipelines are complex, with a multitude of implementation decisions made by tool authors based on their interests and assumptions. This raises the questions if (and to what extent) tools agree on their results and are interchangeable. In this study, we use two tools to extract and analyse ten large software projects, quantitatively and qualitatively comparing results and derived data to better understand this concern. We analyse discrepancies from a technical point of view, and adjust code and parametrisation to minimise replication differences. Our results indicate that despite similar trends, even simple metrics such as the numbers of commits and developers may differ by up to 500\%. We find that such substantial differences are often caused by minor technical details. We show how tool-level and data post-processing changes can overcome these issues, but find they may require considerable efforts. We summarise identified causes in our lessons learned to help researchers and practitioners avoid common pitfalls, and reflect on implementation decisions and their influence in ensuring obtained data meets explicit and implicit expectations. Our findings lead us to hypothesise that similar uncertainties exist in other analysis tools, which may limit the validity of conclusions drawn in tool-centric research.}, language = {en} } @inproceedings{BaumannBussAttereretal., author = {Baumann, Timo and Buß, Okko and Atterer, Michaela and Schlangen, David}, title = {Evaluating the Potential Utility of ASR N-Best Lists for Incremental Spoken Dialogue Systems}, series = {Proceedings of Interspeech 2009 : speech and intelligence ; 6 - 10 September, 2009, Brighton, UK}, booktitle = {Proceedings of Interspeech 2009 : speech and intelligence ; 6 - 10 September, 2009, Brighton, UK}, publisher = {ISCA}, address = {Brighton, UK}, doi = {10.21437/Interspeech.2009-318}, pages = {1031 -- 1034}, abstract = {The potential of using ASR n-best lists for dialogue systems has often been recognised (if less often realised): it is often the case that even when the top-ranked hypothesis is erroneous, a bet- ter one can be found at a lower rank. In this paper, we describe metrics for evaluating whether the same potential carries over to incremental dialogue systems, where ASR output is consumed and reacted upon while speech is still ongoing. We show that even small N can provide an advantage for semantic process- ing, at a cost of a computational overhead.}, language = {en} } @inproceedings{BurgerSarkarKirschetal., author = {Burger, David and Sarkar, Amitrajit and Kirsch, Konstantin and D{\"u}nnweber, Jan}, title = {Combining Fill-Level Sensing with Route Optimization for a More Efficient Waste Collection}, series = {ECDG 2018 - European Conference on Digital Government, 2018, Santiago De Compostela, Spain}, booktitle = {ECDG 2018 - European Conference on Digital Government, 2018, Santiago De Compostela, Spain}, editor = {Bouzas Lorenzo, Ram{\´o}n}, isbn = {9781912764037}, pages = {24 -- 31}, abstract = {We tackle the problem that collecting all the waste of modern cities within the scheduled time spans becomes increasingly challenging, while the waste collection team is not supplemented accordingly in many places, e.g. by more staff or vehicles. Separating waste has become natural for urban populations, as recycling is ecologically necessary. However, the separation also leads to a continuously increasing number of containers which are logistically unmanageable without computer-aided collection scheduling. Regensburg recently introduced a new program for the collection of biological waste, which extends the private collection of such waste by a few hundred public biological waste containers. Computer support was pretty basic so far, i.e. the collection times were recorded and the routes were sporadically rescheduled manually in an Excel sheet. We show that much shorter waste collection routes can be found automatically using a dynamic version of the classic Ant Colony Optimization (ACO) algorithm for shortening the collection routes. Moreover, we sketch an loT (lnternet-of-Things) approach to "lntelligent Waste Containers" which we equip with ultrasonic sensors monitoring the fill levels, which allows us to skip poorly used containers during the collection and reposition them on demand. By means of a computer simulation with online visualization, we illustrate that our optimized and dynamically adapted collection routes lead to significant time savings. Indeed, more than twice the number of currently used containers can be collected within the same time. We also report about the first experiments that we conducted with real sensors. The presented work is the result of a cooperation between four contributing parties: 1) Technical University of Regensburg (OTH); 2) Ara Institute of Canterbury; 3) Regensburg's Governmental Department of Waste Management; and 4) an industry partner (kpit.com). We compare the outcome of our project with related work and we sketch some future perspectives and ideas for transforming Regensburg into an even more automatized, environmentally friendly "smart city".}, language = {en} } @article{SchedlbauerRaptisLudwig, author = {Schedlbauer, J{\"u}rgen and Raptis, Georgios and Ludwig, Bernd}, title = {Medical informatics labor market analysis using web crawling, web scraping, and text mining}, series = {International Journal of Medical Informatics}, volume = {150}, journal = {International Journal of Medical Informatics}, number = {June}, publisher = {Elsevier}, issn = {1386-5056}, doi = {10.1016/j.ijmedinf.2021.104453}, abstract = {Objectives The European University Association (EUA) defines "employability" as a major goal of higher education. Therefore, competence-based orientation is an important aspect of education. The representation of a standardized job profile in the field of medical informatics, which is based on the most common labor market requirements, is fundamental for identifying and conveying the learning goals corresponding to these competences. Methods To identify the most common requirements, we extracted 544 job advertisements from the German job portal, STEPSTONE. This process was conducted via a program we developed in R with the "rvest" library, utilizing web crawling, web extraction, and text mining. After removing duplicates and filtering for jobs that required a bachelor's degree, 147 job advertisements remained, from which we extracted qualification terms. We categorized the terms into six groups: professional expertise, soft skills, teamwork, processes, learning, and problem-solving abilities. Results The results showed that only 45\% of the terms are related to professional expertise, while 55\% are related to soft skills. Studies of employee soft skills have shown similar results. The most prevalent terms were programming, experience, project, and server. Our second major finding is the importance of experience, further underlining how essential practical skills are. Conclusions Previous studies used surveys and narrative descriptions. This is the first study to use web crawling, web extraction, and text mining. Our research shows that soft skills and specialist knowledge carry equal weight. The insights gained from this study may be of assistance in developing curricula for medical informatics.}, language = {en} } @inproceedings{DuennweberSarkarPuthiyadathetal., author = {D{\"u}nnweber, Jan and Sarkar, Amitrajit and Puthiyadath, Vimal Kumar and Barde, Omkar}, title = {A Tale of Four Cities - Improving Bus and Waste Collection Schedules in Practical Smart City Applications}, series = {Computer Information Systems and Industrial Management}, booktitle = {Computer Information Systems and Industrial Management}, editor = {Saeed, Khalid and Dvorsk{\´y}, Jiř{\´i}}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-84340-3}, doi = {10.1007/978-3-030-84340-3_30}, pages = {369 -- 380}, abstract = {Computer-based Improvements of waste collection and public transport procedures are often a part of smart city initiatives. When we envision an ideal bus network, it will primarily connect the most crowded bus stops. Similarly, an ideal waste collection vehicle will arrive at every container exactly at the time when it is fully loaded. Beyond doubt, this will reduce traffic and support environmentally friendly intentions like waste separation, as it will make more containers manageable. A difficulty of putting that vision into practice is that vehicles cannot always be where they are needed. Knowing the best time for arriving at a position is not insufficient for finding the optimal route. Therefore, we compare four different approaches to optimized routing: Regensburg, Christchurch, Malaysia, and Bangalore. Our analysis shows that the best schedules result from adapting field-tested routes frequently based on sensor measurements and route optimizing computations.}, language = {en} } @inproceedings{StadlerSarkarDuennweber, author = {Stadler, Timo and Sarkar, Amitrajit and D{\"u}nnweber, Jan}, title = {Bus Demand Forecasting for Rural Areas Using XGBoost and Random Forest Algorithm}, series = {CISIM2021: 20th International Conference on Computer Information Systems and Industrial Management Applications, September 24-26 2021, Ełk, Poland}, booktitle = {CISIM2021: 20th International Conference on Computer Information Systems and Industrial Management Applications, September 24-26 2021, Ełk, Poland}, editor = {Saeed, Khalid and Dvorsk{\´y}, Jiř{\´i}}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-84340-3}, doi = {10.1007/978-3-030-84340-3_36}, pages = {442 -- 453}, abstract = {In recent years, mobility solutions have experienced a significant upswing. Consequently, it has increased the importance of forecasting the number of passengers and determining the associated demand for vehicles. We analyze all bus routes in a rural area in contrast to other work that predicts just a single bus route. Some differences in bus routes in rural areas compared to cities are highlighted and substantiated by a case study data using Roding, a town in the rural district of Cham in northern Bavaria, as an example. Data collected and we selected a random forest model that lets us determine the passenger demand, bus line effectiveness, or general user behavior. The prediction accuracy of the selected model is currently 87\%. The collected data helps to build new mobility-as-a-service solutions, such as on-call buses or dynamic route optimizations, as we show with our simulation.}, subject = {{\"O}ffentlicher Personennahverkehr}, language = {en} } @inproceedings{SarkarTraubinger, author = {Sarkar, Amitrajit and Traubinger, Thomas}, title = {IS Resilience Decision Priorities at German SMEs}, series = {27th American Conference on Information Systems 2021 (AMCIS 2021): Digital Innovation and Entrepreneurship, Virtual Conference, August 9-13, 2021}, booktitle = {27th American Conference on Information Systems 2021 (AMCIS 2021): Digital Innovation and Entrepreneurship, Virtual Conference, August 9-13, 2021}, abstract = {IS resilience addresses the challenge of securing organizational information systems against disruptions to ensure the continuation of daily business processes and to guarantee the resilience of the organization as a whole. In this paper, we adopt Agency Theory and Weill's IT Governance framework to investigate the decision priorities of senior executives in the context of IS resilience planning, which falls under the broader umbrella of IT governance. The management of IS resilience involves different fields of action types and interests which decision-makers within organizations must confront. This is of special importance for small- to medium-sized companies (SMEs) where IS often is not a dedicated or small corporate function. This paper identifies distinctive character types of corporate decision-makers at SMEs in a European context and their priorities in IS resilience. The study was performed using Q-methodology. It was able to identify and describe three additional types of decision-makers in comparison to previous research thereby clearly showing that the field has progressed. These character types provide an informative insight into the priorities of IS resilience planning in SMEs and show differences and commonalities between decision-makers.}, language = {en} } @incollection{SchneiderSonarWeber, author = {Schneider, Diana and Sonar, Arne and Weber, Karsten}, title = {Zwischen Automatisierung und ethischem Anspruch - Disruptive Effekte des KI-Einsatzes in und auf Professionen der Gesundheitsversorgung}, series = {K{\"u}nstliche Intelligenz im Gesundheitswesen}, booktitle = {K{\"u}nstliche Intelligenz im Gesundheitswesen}, publisher = {Springer}, address = {Wiesbaden}, doi = {10.1007/978-3-658-33597-7_14}, pages = {325 -- 348}, abstract = {K{\"u}nstliche Intelligenz (KI) und algorithmische Systeme der Entscheidungsfindung entwickeln sich rapide zu wichtigen neuen Technologien in unserem t{\"a}glichen Leben und es kann kaum Zweifel geben, dass sie einen großen Einfluss auf die Gesellschaft haben - auch in Professionen der Gesundheitsversorgung. Aufgrund ihrer Wirkkraft auf vorhandene {\"o}konomische und organisatorische Strukturen werden diesen Technologien gleichzeitig disruptive Effekte auf ihre jeweiligen Anwendungsdom{\"a}nen zugesprochen. Im vorliegenden Beitrag wird an den Beispielen der klinischen Medizin sowie der Einzelfallhilfe der Sozialen Arbeit dargelegt, in welcher Weise KI professionelle Praxen in der Gesundheitsversorgung ver{\"a}ndert, welche Konsequenzen daraus f{\"u}r die Professionen erwachsen und welche Handlungsaufforderungen sich f{\"u}r die jeweiligen Professionen ergeben.}, language = {de} } @misc{WeberSonarGerhardsetal., author = {Weber, Karsten and Sonar, Arne and Gerhards, Helene and Bittner, Uta and Krug, Henriette and Reuter-Oppermann, Melanie and Pumplun, Luisa and M{\"u}ller, Helene and Buxmann, Peter and Schneider, Diana and Zoglauer, Thomas}, title = {K{\"u}nstliche Intelligenz und Gesundheit}, editor = {Sonar, Arne and Weber, Karsten}, publisher = {Franz Steiner}, address = {Stuttgart}, isbn = {978-3-515-12977-0}, doi = {10.25162/9783515129770}, abstract = {Der Einsatz von k{\"u}nstlicher Intelligenz im Gesundheitsbereich verspricht besonders großen Nutzen durch eine bessere Versorgung sowie effizientere Abl{\"a}ufe und bietet damit letztlich auch {\"o}konomische Vorteile. Dem stehen unter anderem Bef{\"u}rchtungen entgegen, dass sich durch den Einsatz von k{\"u}nstlicher Intelligenz das Arzt-Patienten-Verh{\"a}ltnis ver{\"a}ndern k{\"o}nnte, Arbeitspl{\"a}tze gef{\"a}hrdet seien oder die {\"O}konomisierung des Gesundheitswesens einen weiteren Schub erfahren k{\"o}nnte. Zuweilen wird die Debatte um diese Technologie, zumal in der {\"O}ffentlichkeit, emotional und fern sachlicher Argumente gef{\"u}hrt. Die Autorinnen und Autoren untersuchen die Geschichte des KI-Einsatzes in der Medizin, deren {\"o}ffentliche Wahrnehmung, Governance der KI, die M{\"o}glichkeiten und Grenzen der Technik sowie Einsatzgebiete, die bisher noch nicht oder nur wenig im Fokus der Aufmerksamkeit waren. Dabei erweist sich die KI als leistungsf{\"a}higes Werkzeug, das zahlreiche ethische und soziale Fragen aufwirft, die bei der Einf{\"u}hrung anderer Technologien bereits gestellt wurden; allerdings gibt es auch neue Herausforderungen, denen sich Professionen, Politik und Gesellschaft stellen m{\"u}ssen.}, language = {de} } @inproceedings{BaumannAttererSchlangen, author = {Baumann, Timo and Atterer, Michaela and Schlangen, David}, title = {Assessing and Improving the Performance of Speech Recognition for Incremental Systems}, series = {NAACL '09: Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics, May 31 - June 5, 2009, Boulder, Colorado, USA}, booktitle = {NAACL '09: Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics, May 31 - June 5, 2009, Boulder, Colorado, USA}, publisher = {Association for Computational Linguistics}, isbn = {978-1-932432-41-1}, pages = {380 -- 388}, abstract = {In incremental spoken dialogue systems, par- tial hypotheses about what was said are re- quired even while the utterance is still ongo- ing. We define measures for evaluating the quality of incremental ASR components with respect to the relative correctness of the par- tial hypotheses compared to hypotheses that can optimize over the complete input, the tim- ingof hypothesisformationrelative to the por- tion ofthe inputthey areabout, andhypothesis stability, defined as the number of times they are revised. We show that simple incremen- tal post-processing can improve stability dra- matically, at the cost of timeliness (from 90\% of edits of hypotheses being spurious down to 10\% at a lag of 320ms). The measures are not independent,and we show how system de- signers can find a desired operating point for their ASR. To our knowledge, we are the first to suggest and examine a variety of measures for assessing incremental ASR and improve performance on this basis.}, language = {en} } @inproceedings{BaumannBussSchlangen, author = {Baumann, Timo and Buß, Okko and Schlangen, David}, title = {InproTK in Action: Open-Source Software for Building German-Speaking Incremental Spoken Dialogue Systems}, series = {Electronic speech signal processing 2010 : proceedings of the 21st conference, Berlin, 8 - 10 September 2010}, booktitle = {Electronic speech signal processing 2010 : proceedings of the 21st conference, Berlin, 8 - 10 September 2010}, publisher = {TUDpress}, address = {Berlin, Germany}, pages = {204 -- 211}, abstract = {We present INPROTK, a toolkit for building incremental spoken dia-logue systems. Incremental spoken dialogue systems (systems that may react whilethe user's utterance is ongoing) are a fairly recent research topic and allow for ex-citing new features. Even though toolkits exist that help in building conventionaldialogue systems, INPROTK offers both a tested architecture for building incre-mental SDSs as well as many of the building blocks necessary when building suchsystems. With INPROTK a researcher can avoid many of the technical difficulties,which hopefully further fosters research in this area.}, language = {en} } @inproceedings{AttererBaumannSchlangen, author = {Atterer, Michaela and Baumann, Timo and Schlangen, David}, title = {No Sooner Said Than Done: Testing the Incrementality of Semantic Interpretations of Spontaneous Speech}, series = {Proceedings of Interspeech 2009 : 6 - 10 September 2009, Brighton, U.K.}, booktitle = {Proceedings of Interspeech 2009 : 6 - 10 September 2009, Brighton, U.K.}, publisher = {International Speech Communication Association}, address = {Brighton, UK}, doi = {10.21437/Interspeech.2009-539}, pages = {1855 -- 1858}, abstract = {Ideally, a spoken dialogue system should react without much delay to a user's utterance. Such a system would already select an object, for instance, before the user has finished her utterance about moving this particular object to a particular place. A prerequisite for such a prompt reaction is that semantic representations are built up on the fly and passed on to other modules. Few approaches to incremental semantics construction exist, and, to our knowledge, none of those has been systematically tested on a spontaneous speech corpus. In this paper, we develop measures to test empirically on transcribed spontaneous speech to what extent we can create semantic interpretation on the fly with an incremental semantic chunker that builds a frame semantics.}, language = {en} } @inproceedings{BaumannSchlangen, author = {Baumann, Timo and Schlangen, David}, title = {Predicting the Micro-Timing of User Input for an Incremental Spoken Dialogue System that Completes a User's Ongoing Turn}, series = {SIGDIAL 2011 Conference, 12th annual meeting of the Special Interest Group on Discourse and Dialogue, Co-located with ACL HLT 2011, Portland, Oregon, 17 - 18 June 2011}, booktitle = {SIGDIAL 2011 Conference, 12th annual meeting of the Special Interest Group on Discourse and Dialogue, Co-located with ACL HLT 2011, Portland, Oregon, 17 - 18 June 2011}, publisher = {Curran}, address = {Red Hook, NY}, isbn = {978-1-61839-242-8}, pages = {120 -- 129}, abstract = {We present the novel task of predicting tem-poral features of continuations of user input,while that input is still ongoing. We show that the remaining duration of an ongoing word, aswell as the duration of the next can be predicted reasonably well, and we put this information touse in a system that synchronously completesa user's speech. While we focus on collaborative completions, the techniques presented here may also be useful for the alignment of back-channels and immediate turn-taking in anincremental SDS, or to synchronously monitorthe user's speech fluency for other reasons.}, language = {en} } @inproceedings{BuschmeierBaumannDorschetal., author = {Buschmeier, Hendrik and Baumann, Timo and Dorsch, Benjamin and Kopp, Stefan and Schlangen, David}, title = {Combining Incremental Language Generation and Incremental Speech Synthesis for Adaptive Information Presentation}, series = {SIGDIAL '12: Proceedings of the 13th Annual Meeting of the Special Interest Group on Discourse and Dialogue, Seoul, South Korea, July 5 - 6, 2012}, booktitle = {SIGDIAL '12: Proceedings of the 13th Annual Meeting of the Special Interest Group on Discourse and Dialogue, Seoul, South Korea, July 5 - 6, 2012}, publisher = {Association for Computational Linguistics}, doi = {10.5555/2392800.2392852}, pages = {295 -- 303}, abstract = {Participants in a conversation are normally receptive to their surroundings and their interlocutors, even while they are speaking and can, if necessary, adapt their ongoing utterance. Typical dialogue systems are not receptive and cannot adapt while uttering. We present combin-able components for incremental natural lan-guage generation and incremental speech syn-thesis and demonstrate the flexibility they can achieve with an example system that adapts to a listener's acoustic understanding problems by pausing, repeating and possibly rephrasing problematic parts of an utterance. In an evaluation, this system was rated as significantly more natural than two systems representing the current state of the art that either ignore the interrupting event or just pause; it also has a lower response time.}, language = {en} } @inproceedings{HeintzeBaumannSchlangen, author = {Heintze, Silvan and Baumann, Timo and Schlangen, David}, title = {Comparing Local and Sequential Models for Statistical Incremental Natural Language Understanding}, series = {SIGDIAL '10: Proceedings of the 11th Annual Meeting of the Special Interest Group on Discourse and Dialogue, Tokyo, Japan,September 24 - 25, 2010}, booktitle = {SIGDIAL '10: Proceedings of the 11th Annual Meeting of the Special Interest Group on Discourse and Dialogue, Tokyo, Japan,September 24 - 25, 2010}, publisher = {Association for Computational Linguistics}, address = {Tokyo, Japan}, isbn = {978-1-932432-85-5}, doi = {10.5555/1944506.1944508}, abstract = {Incremental natural language understanding is the task of assigning semantic representations to successively larger prefixes of utterances. We compare two types of statistical models for this task: a) local models, which predict a single class for an input; and b), sequential models, which align a sequence of classes to a sequence of input tokens. We show that, with some modifications, the first type of model can be improved and made to approximate the output of the second, even though the latter is more informative. We show on two different data sets that both types of model achieve comparable performance (significantly better than a baseline), with the first type requiring simpler training data. Results for the first type of model have been reported in the literature; we show that for our kind of data our more sophisticated variant of the model performs better.}, language = {en} } @article{BaumannBussSchlangen, author = {Baumann, Timo and Buß, Okko and Schlangen, David}, title = {Evaluation and Optimisation of Incremental Processors}, series = {Dialogue \& Discourse}, volume = {2}, journal = {Dialogue \& Discourse}, number = {1}, publisher = {OJS}, doi = {10.5087/dad.2011.106}, pages = {113 -- 141}, abstract = {Incremental spoken dialogue systems, which process user input as it unfolds, pose additionalengineering challenges compared to more standard non-incremental systems: Their processingcomponents must be able to accept partial, and possibly subsequently revised input, and mustproduce output that is at the same time as accurate as possible and delivered with as little delay aspossible. In this article, we define metrics that measure how well a given processor meets thesechallenges, and we identify types of gold standards for evaluation. We exemplify these metrics inthe evaluation of several incremental processors that we have developed. We also present genericmeans to optimise some of the measures, if certain trade-offs are accepted. We believe that thiswork will help enable principled comparison of components for incremental dialogue systems andportability of results.}, language = {en} } @incollection{BaumannSchlangen, author = {Baumann, Timo and Schlangen, David}, title = {Interactional Adequacy as a Factor in the Perception of Synthesized Speech}, series = {Proceedings of Speech Synthesis Workshop (SSW8)}, booktitle = {Proceedings of Speech Synthesis Workshop (SSW8)}, address = {Barcelona, Spain}, abstract = {Speaking as part of a conversation is different from reading out aloud. Speech synthesis systems, however, are typically developed using assumptions (at least implicitly) that are more true of the latter than the former situation. We address one particular aspect, which is the assumption that a fully formulated sentence is available for synthesis. We have built a system that does not make this assumption but rather can synthesize speech given incrementally extended input. In an evaluation experiment, we found that in a dynamic domain where what is talked about changes quickly, subjects rated the output of this system as more 'naturally pronounced' than that of a baseline system that employed standard synthesis, despite the synthesis quality objectively being degraded. Our results highlight the importance of considering a synthesizer's ability to support interactive use-cases when determining the adequacy of synthesized speech.}, language = {en} }