@misc{Stange, type = {Master Thesis}, author = {Stange, Jan-Erik}, title = {one. million. dot.}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:525-3048}, school = {Fachhochschule Potsdam}, pages = {142}, abstract = {In dieser Thesis wird eine neue Art von Recherchesystem f{\"u}r Bibliotheken vorgestellt, das mithilfe von Methoden der Informationsvisualisierung eine visuellere Form der Suche vorschl{\"a}gt, die, wie ich zeigen werde, dem Informationsbed{\"u}rfnis von Wissenschaftlern mehr entspricht als heutige Bibliothekskataloge dies tun. Ein nicht unerheblicher Teil der wissenschaftlichen Arbeit besteht darin, relevante Literatur zu einem ausgew{\"a}hlten Themenfeld ausfindig zu machen, um diese in das Forschungsgebiet einzuordnen und sich von diesem ein Bild zu machen. Insofern ist der Bibliothekskatalog als Werkzeug, das einem hilft, diese Literatur zu entdecken, ein wesentlicher Faktor, der maßgeblichen Einfluss auf Erfolg oder Misserfolg einer Literaturrecherche haben kann. Seit den 80er Jahren wird f{\"u}r die Recherche ein elektronischer Bibliothekskatalog verwendet, der OPAC (Online Public Access Catalog). Dessen Erscheinungsbild und Interface hat sich seit seiner Einf{\"u}hrung nur in geringem Maße ver{\"a}ndert, in den meisten Bibliotheken in Deutschland und auch international wird man als Nutzer mit OPACs konfrontiert, die auf einem Stand von vor einem Jahrzehnt sind. W{\"a}hrend die von Beginn an vorhandenen Usability-M{\"a}ngel zun{\"a}chst mangels Alternativen nicht auffielen bzw. als ein {\"U}bel wahrgenommen wurden, mit dem man sich zu arrangieren hatte, so erzeugte das Aufkommen des Web 2.0 bei Nutzern eine ganz andere Erwartungshaltung. Die aus dem Web bekannten Funktionalit{\"a}ten, wie Faceted Search, Suchbegriffserg{\"a}nzungen oder Relevanzranking erwarteten Nutzer nun auch von OPACs. Studien, die belegen, dass die Nutzung von OPACs in den letzten Jahren abgenommen hat, f{\"u}hrten unter Bibliothekaren zu Diskussionen dar{\"u}ber, wie man sich als Bibliothek mithilfe des OPAC wieder als gefragter Informationsanbieter positionieren k{\"o}nnte. Mittlerweile gibt es Ans{\"a}tze in Form sogenannter NGCs (Next Generation Catalogs), die unter anderem die oben genannten Web 2.0-Funktionalit{\"a}ten in Kataloge integrieren und aus Usability-Sicht leichter zu handhaben sind. Hier soll ein g{\"a}nzlich anderer Weg eingeschlagen werden.}, subject = {Online-Katalog}, language = {de} } @inproceedings{StangeDoerk, author = {Stange, Jan-Erik and D{\"o}rk, Marian}, title = {Visualizing the spatiality in fictional narratives}, abstract = {This work is part of ongoing research on the visualization of spatial relationships in fictional works. Our aim is to arrive at aesthetic representations of fictional narratives set in actual places such as cities. Novel City Maps offers two map views, one inspired by transit maps and the other by conventional street maps. The former uses the aesthetic of abstract transit maps to reveal the co-occurrence structures between important places in a story. The street map view is designed as a spatial fingerprint of a novel by highlighting the places occurring often in the story.}, subject = {Informationsvisualisierung}, language = {en} } @incollection{LandstorferHerrmannStangeetal., author = {Landstorfer, Johannes and Herrmann, Ivo and Stange, Jan-Erik and D{\"o}rk, Marian and Wettach, Reto}, title = {Weaving a Carpet from Log Entries}, series = {2014 IEEE Conference on Visual Analytics Science and Technology (VAST) : 25 - 31 Oct. [i.e. 9 - 14 November] 2014, Paris, France}, booktitle = {2014 IEEE Conference on Visual Analytics Science and Technology (VAST) : 25 - 31 Oct. [i.e. 9 - 14 November] 2014, Paris, France}, publisher = {IEEE}, address = {Piscataway, NJ}, doi = {10.1109/VAST.2014.7042483}, pages = {73 -- 82}, abstract = {We created a pixel map for multivariate data based on an analysis of the needs of network security engineers. Parameters of a log record are shown as pixels and these pixels are stacked to represent a record. This allows a broad view of a data set on one screen while staying very close to the raw data and to expose common and rare patterns of user behavior through the visualization itself (the "Carpet"). Visualizations that immediately point to areas of suspicious activity without requiring extensive filtering, help network engineers investigating unknown computer security incidents. Most of them, however, have limited knowledge of advanced visualization techniques, while many designers and data scientists are unfamiliar with computer security topics. To bridge this gap, we developed visualizations together with engineers, following a co-creative process. We will show how we explored the scope of the engineers' tasks and how we jointly developed ideas and designs. Our expert evaluation indicates that this visualization helps to scan large parts of log files quickly and to define areas of interest for closer inspection.}, subject = {Rechnernetz}, language = {en} } @incollection{StangeLandstorferDoerketal., author = {Stange, Jan-Erik and Landstorfer, Johannes and D{\"o}rk, Marian and Wettach, Reto}, title = {Visual Filter}, series = {Proceedings of the Eleventh Workshop on Visualization for Cyber Security (VizSec '14)}, booktitle = {Proceedings of the Eleventh Workshop on Visualization for Cyber Security (VizSec '14)}, publisher = {ACM}, address = {New York, NY}, isbn = {978-1-4503-2826-5}, doi = {10.1145/2671491.2671503}, pages = {41 -- 48}, abstract = {Network log files often need to be investigated manually for suspicious activity. The huge amount of log lines complicates maintaining an overview, navigation and quick pattern identification. We propose a system that uses an interactive visualization, a visual filter, representing the whole log in an overview, allowing to navigate and make context-preserving subselections with the visualization and in this way reducing the time and effort for security experts needed to identify patterns in the log file. This explorative interactive visualization is combined with focused querying to search for known suspicious terms that are then highlighted in the visualization and the log file itself.}, subject = {Computergrafik}, language = {en} } @article{DoerkMuellerStangeetal., author = {D{\"o}rk, Marian and M{\"u}ller, Boris and Stange, Jan-Erik and Herseni, Johannes and Dittrich, Katja}, title = {Co-Designing Visualizations for Information Seeking and Knowledge Management}, series = {Open Information Science}, volume = {4}, journal = {Open Information Science}, number = {1}, publisher = {De Gruyter Saur}, address = {Berlin}, issn = {2451-1781}, doi = {10.1515/opis-2020-0102}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:525-26188}, pages = {217 -- 235}, abstract = {Creativity is a crucial factor in finding novel and useful visualization and interaction techniques, but its emergence is contingent on the right conditions. The focus of visualization research has traditionally been on techniques, and to a lesser degree on the process of creating them with domain experts and end users. This paper focuses on the collaborative design of visualizations for information seeking and knowledge management. The difficult, yet common challenge in any visualization project is to find meaningful visual representations and useful interaction techniques to carry out complex analysis tasks. The unique difficulty for preparing co-design activities for visualization lies in the gap between the abstract nature of data and the concrete form of visual representations. To bridge this gap, our co-design framework for visualization places particular emphasis on actors, activities, and artifacts as categories that expand the focus of visualization design beyond the traditional triad of users, tasks, and data. Drawing from general co-design principles, the framework is developed and validated during the course of two case studies in the context of information management systems and library collection databases. Based on observed patterns during the case studies, practical tactics provide advice on carrying out co-design in information visualization.}, subject = {Methodologie}, language = {en} } @article{SchwanJackeKleymannetal., author = {Schwan, Hannah and Jacke, Janina and Kleymann, Rabea and Stange, Jan-Erik and D{\"o}rk, Marian}, title = {Narrelations}, series = {Digital humanities quarterly : DHQ}, volume = {13}, journal = {Digital humanities quarterly : DHQ}, number = {3}, publisher = {Association for Computers and the Humanities}, address = {USA}, issn = {1938-4122}, pages = {1 -- 27}, abstract = {We present findings from interdisciplinary research at the intersection between literary studies, information visualization, and interface design. Despite a growing interest in text visualization among literary scholars, so far, narrative visualizations are not designed to support the particular tasks involved in narratological analysis and often fail to reveal nuanced narratological features. One major outcome of our iterative research and design process is Narrelations, a novel visualization technique specifically suited for analyzing and interpreting narrative levels of a story and temporal aspects of its narrative representation. The visualization provides an overview of the nesting and distribution of narrative levels, integrates the representation of temporal phenomena, and facilitates the examination of correlations between these aspects. With this research we explore how collaboratively designed visual encodings and interaction techniques may allow for an insightful analysis at a high level coupled with a close inspection of text passages. We discuss prior work relevant to our research objectives and explain the specific characteristics of narrative levels and temporal aspects of narrative representation. After describing the research process and design principles, we apply the visualization on a test corpus of eight annotated German short stories and demonstrate its heuristic value for literary analyses and interpretations. In particular, we explore the intricate connections between the literary content of the novellas and their narrative form.}, subject = {Literaturwissenschaft}, language = {en} }