@misc{LiuLoefflerHofstedt, author = {Liu, Ke and L{\"o}ffler, Sven and Hofstedt, Petra}, title = {Exploring Properties of Icosoku by Constraint Satisfaction Approach}, series = {Pre-proceedings of the {DECLARE} 2019 Conference}, journal = {Pre-proceedings of the {DECLARE} 2019 Conference}, editor = {Abreu, Salvador and Hofstedt, Petra and John, Ulrich and Kuchen, Herbert and Seipel, Dietmar}, pages = {7}, language = {en} } @misc{LoefflerLiuHofstedt, author = {L{\"o}ffler, Sven and Liu, Ke and Hofstedt, Petra}, title = {The Regularization of Small Sub-Constraint Satisfaction Problems}, series = {Pre-proceedings of the DECLARE 2019 Conference}, journal = {Pre-proceedings of the DECLARE 2019 Conference}, editor = {Abreu, Salvador and Hofstedt, Petra and John, Ulrich and Kuchen, Herbert and Seipel, Dietmar}, pages = {7}, language = {en} } @misc{LiuLoefflerHofstedt, author = {Liu, Ke and L{\"o}ffler, Sven and Hofstedt, Petra}, title = {Solving the Talent Scheduling Problem by Parallel Constraint Programming}, series = {Artificial Intelligence Applications and Innovations - 15th IFIP WG 12.5 International Conference, AIAI 2019}, journal = {Artificial Intelligence Applications and Innovations - 15th IFIP WG 12.5 International Conference, AIAI 2019}, editor = {MacIntyre, John and Maglogiannis, Ilias and Iliadis, Lazaros S. and Pimenidis, Elias}, publisher = {Springer}, isbn = {978-3-030-19822-0}, issn = {1868-4238}, doi = {10.1007/978-3-030-19823-7_19}, pages = {236 -- 244}, language = {en} } @incollection{HofstedtHowerJohnetal., author = {Hofstedt, Petra and Hower, Walter and John, Ulrich and Wolf, Armin}, title = {MOC 2019 - 11. Workshop zur transparenten Modellierung und Optimierung komplexer Probleme}, series = {INFORMATIK 2019 - 50 Jahre Gesellschaft f{\"u}r Informatik - Informatik f{\"u}r Gesellschaft}, booktitle = {INFORMATIK 2019 - 50 Jahre Gesellschaft f{\"u}r Informatik - Informatik f{\"u}r Gesellschaft}, editor = {Draude, Claude and Lange, Martin and Sick, Bernhard}, publisher = {GI}, address = {Bonn}, isbn = {978-3-88579-689-3}, doi = {10.18420/inf2019_ws40}, pages = {1}, language = {de} } @misc{LiuLoefflerHofstedt, author = {Liu, Ke and L{\"o}ffler, Sven and Hofstedt, Petra}, title = {Parallel Stochastic Portfolio Search for Constraint Solving}, series = {2019 IEEE Intl Conf on Parallel \& Distributed Processing with Applications, Big Data \& Cloud Computing, Sustainable Computing \& Communications, Social Computing \& Networking (ISPA/BDCloud/SocialCom/SustainCom)}, journal = {2019 IEEE Intl Conf on Parallel \& Distributed Processing with Applications, Big Data \& Cloud Computing, Sustainable Computing \& Communications, Social Computing \& Networking (ISPA/BDCloud/SocialCom/SustainCom)}, publisher = {IEEE}, isbn = {978-1-7281-4328-6}, doi = {10.1109/ISPA-BDCloud-SustainCom-SocialCom48970.2019.00106}, pages = {697 -- 704}, language = {en} } @misc{LiuLoefflerHofstedt, author = {Liu, Ke and L{\"o}ffler, Sven and Hofstedt, Petra}, title = {Exploring Properties of Icosoku by Constraint Satisfaction Approach}, series = {Declarative Programming and Knowledge Management - Conference on Declarative Programming, DECLARE 2019, Unifying INAP, WLP, and WFLP, Revised Selected Papers}, journal = {Declarative Programming and Knowledge Management - Conference on Declarative Programming, DECLARE 2019, Unifying INAP, WLP, and WFLP, Revised Selected Papers}, editor = {Hofstedt, Petra and Abreu, Salvador and John, Ulrich and Kuchen, Herbert and Seipel, Dietmar}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-46713-5}, issn = {0302-9743}, doi = {10.1007/978-3-030-46714-2_7}, pages = {99 -- 105}, language = {en} } @misc{LoefflerLiuHofstedt, author = {L{\"o}ffler, Sven and Liu, Ke and Hofstedt, Petra}, title = {The Regularization of Small Sub-Constraint Satisfaction Problems}, series = {Declarative Programming and Knowledge Management - Conference on Declarative Programming, DECLARE 2019, Unifying INAP, WLP, and WFLP, Revised Selected Papers}, journal = {Declarative Programming and Knowledge Management - Conference on Declarative Programming, DECLARE 2019, Unifying INAP, WLP, and WFLP, Revised Selected Papers}, editor = {Hofstedt, Petra and Abreu, Salvador and John, Ulrich and Kuchen, Herbert and Seipel, Dietmar}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-46713-5}, issn = {0302-9743}, doi = {10.1007/978-3-030-46714-2_8}, pages = {106 -- 115}, language = {en} } @misc{LoefflerLiuHofstedt, author = {L{\"o}ffler, Sven and Liu, Ke and Hofstedt, Petra}, title = {Optimizing Constraint Satisfaction Problems by Regularization for the Sample Case of the Warehouse Location Problem}, series = {KI 2020: Advances in Artificial Intelligence, 43rd German Conference on AI, Bamberg, Germany, September 21-25, 2020}, journal = {KI 2020: Advances in Artificial Intelligence, 43rd German Conference on AI, Bamberg, Germany, September 21-25, 2020}, editor = {Schmid, Ute and Kl{\"u}gl, Franziska and Wolter, Diedrich}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-58284-5}, issn = {0302-9743}, doi = {10.1007/978-3-030-58285-2_26}, pages = {297 -- 304}, language = {en} } @misc{LoefflerLiuHofstedt, author = {L{\"o}ffler, Sven and Liu, Ke and Hofstedt, Petra}, title = {An Introduction of FD-Complete Constraints}, series = {Artificial Intelligence Applications and Innovations : 16th IFIP WG 12.5 International Conference, AIAI 2020, Neos Marmaras, Greece, June 5-7, 2020, Proceedings, Part II}, journal = {Artificial Intelligence Applications and Innovations : 16th IFIP WG 12.5 International Conference, AIAI 2020, Neos Marmaras, Greece, June 5-7, 2020, Proceedings, Part II}, editor = {Maglogiannis, Ilias and Iliadis, Lazaros S. and Pimenidis, Elias}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-49185-7}, issn = {1868-4238}, doi = {10.1007/978-3-030-49186-4_3}, pages = {27 -- 38}, language = {en} } @misc{LoefflerLiuHofstedt, author = {L{\"o}ffler, Sven and Liu, Ke and Hofstedt, Petra}, title = {Exploring Properties of the Instant Insanity Puzzle with Constraint Satisfaction Approach}, series = {Proceedings of the 12th International Conference on Agents and Artificial Intelligence, ICAART 2020-(Volume 2), February 22-24, 2020, in Valletta, Malta}, journal = {Proceedings of the 12th International Conference on Agents and Artificial Intelligence, ICAART 2020-(Volume 2), February 22-24, 2020, in Valletta, Malta}, editor = {Rocha, Ana Paula and Steels, Luc and Herik, Jaap van den}, publisher = {SciTePress}, address = {Setubal}, isbn = {978-989-758-395-7}, doi = {10.5220/0008880403310338}, pages = {331 -- 338}, language = {en} } @incollection{HofstedtLoeffler, author = {Hofstedt, Petra and L{\"o}ffler, Sven}, title = {Constraints}, series = {Handbuch der k{\"u}nstlichen Intelligenz}, booktitle = {Handbuch der k{\"u}nstlichen Intelligenz}, editor = {G{\"o}rz, G{\"u}nther and Schmid, Ute and Braun, Tanya}, edition = {6. Auflage}, publisher = {De Gruyter}, address = {Berlin, Boston}, isbn = {978-3-11-065984-9}, doi = {10.1515/9783110659948-016}, pages = {713 -- 754}, language = {de} } @misc{LoefflerBeckerHofstedt, author = {L{\"o}ffler, Sven and Becker, Ilja and Hofstedt, Petra}, title = {ML-based Decision Support for CSP Modelling with Regular Membership and Table Constraints}, series = {Proceedings of the 13th International Conference on Agents and Artificial Intelligence (ICAART), Volume 2}, journal = {Proceedings of the 13th International Conference on Agents and Artificial Intelligence (ICAART), Volume 2}, isbn = {978-989-758-484-8}, issn = {2184-433X}, doi = {10.5220/0010299109740981}, pages = {974 -- 981}, language = {en} } @misc{LoefflerBeckerKrolletal., author = {L{\"o}ffler, Sven and Becker, Ilja and Kroll, Franz and Hofstedt, Petra}, title = {A Survey of Constraint Transformation Methods}, series = {51. Jahrestagung der Gesellschaft f{\"u}r Informatik, INFORMATIK 2021 - Computer Science \& Sustainability}, journal = {51. Jahrestagung der Gesellschaft f{\"u}r Informatik, INFORMATIK 2021 - Computer Science \& Sustainability}, isbn = {978-3-88579-708-1}, doi = {10.18420/informatik2021-090}, pages = {1107 -- 1120}, language = {en} } @misc{KrollLoefflerBeckeretal., author = {Kroll, Franz and L{\"o}ffler, Sven and Becker, Ilja and Hofstedt, Petra}, title = {Automatic Detection of Timed-up and Go Tests with IMU Sensor Data}, series = {Proceedings of the 15th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2022}, journal = {Proceedings of the 15th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2022}, editor = {Roque, Ana C.A. and Fred, Ana L.N. and Gamboa, Hugo}, publisher = {SCITEPRESS}, isbn = {978-989-758-552-4}, issn = {2184-4305}, doi = {10.5220/0010775300003123}, pages = {15 -- 24}, language = {en} } @misc{LoefflerKrollBeckeretal., author = {L{\"o}ffler, Sven and Kroll, Franz and Becker, Ilja and Hofstedt, Petra}, title = {Optimal Beacon Placement for Indoor Positioning Using Constraint Programming}, series = {19th IEEE/ACS International Conference on Computer Systems and Applications - AICCSA 2022}, journal = {19th IEEE/ACS International Conference on Computer Systems and Applications - AICCSA 2022}, publisher = {IEEE}, isbn = {979-8-3503-1008-5}, doi = {10.1109/AICCSA56895.2022.10017575}, language = {en} } @misc{BreussLoefflerHofstedt, author = {Breuß, Sonja and L{\"o}ffler, Sven and Hofstedt, Petra}, title = {A Hybrid Constraint- and Search-Based Approach on the Stockyard Planning Problem}, series = {Proceedings of the 21st International Conference on Informatics in Control, Automation and Robotics}, volume = {1}, journal = {Proceedings of the 21st International Conference on Informatics in Control, Automation and Robotics}, publisher = {SCITEPRESS - Science and Technology Publications}, isbn = {978-989-758-717-7}, issn = {2184-2809}, doi = {10.5220/0012995000003822}, pages = {113 -- 125}, language = {en} } @misc{LoefflerHofstedt, author = {L{\"o}ffler, Sven and Hofstedt, Petra}, title = {Automatic Placement of Digital Signals in Railway Digitalization: A Constraint Approach}, series = {Proceedings of the 21st International Conference on Informatics in Control, Automation and Robotics}, volume = {1}, journal = {Proceedings of the 21st International Conference on Informatics in Control, Automation and Robotics}, publisher = {SCITEPRESS - Science and Technology Publications}, isbn = {978-989-758-717-7}, issn = {2184-2809}, doi = {10.5220/0012994800003822}, pages = {101 -- 112}, language = {en} } @misc{LoefflerBeckerHofstedt, author = {L{\"o}ffler, Sven and Becker, Ilja and Hofstedt, Petra}, title = {Enhancing constraint optimization problems with greedy search and clustering: a focus on the traveling salesman problem}, series = {Proceedings of the 16th International Conference on Agents and Artificial Intelligence - Volume 3: ICAART}, journal = {Proceedings of the 16th International Conference on Agents and Artificial Intelligence - Volume 3: ICAART}, publisher = {SCITEPRESS - Science and Technology Publications}, isbn = {978-989-758-680-4}, issn = {2184-433X}, doi = {10.5220/0012453000003636}, pages = {1170 -- 1178}, language = {en} } @misc{LoefflerHofstedt, author = {L{\"o}ffler, Sven and Hofstedt, Petra}, title = {A constraint-based greedy-local-global search for the warehouse location problem}, series = {IFIP Advances in Information and Communication Technology}, journal = {IFIP Advances in Information and Communication Technology}, publisher = {Springer Nature Switzerland}, address = {Cham}, isbn = {9783031632181}, issn = {1868-4238}, doi = {10.1007/978-3-031-63219-8_22}, pages = {291 -- 304}, language = {en} } @misc{FrankBuckelHoegneretal., author = {Frank, Florian and Buckel, Peter and Hoegner, Ludwig and Hofstedt, Petra}, title = {A landmark selection method for object-based visual outdoor localization approaches of automated ground vehicles}, series = {ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences}, journal = {ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences}, publisher = {Copernicus GmbH}, issn = {2194-9050}, doi = {10.5194/isprs-annals-X-4-W5-2024-163-2024}, pages = {163 -- 169}, abstract = {Autonomous vehicles must navigate independently in an outdoor environment using features or objects. However, some objects may be more or less suitable for localization due to their attributes. Therefore, this work investigates the suitability of landmarks for camera- and object-based outdoor localization methods. First, object attributes are methodically derived from the requirements of object-based localization. The physical representation on the camera image plane, probability of occurrence, and persistence were identified as influencing the object localization suitability. The influence of the object's camera image plane representation regarding object recognition algorithms is not considered or discussed, but advice on the minimum object pixel size is provided. The first milestone was the creation of an equation for object localization suitability calculation by normalizing and multiplying the identified attributes. Simultaneously, potential objects from the outdoor environment were identified, resulting in a structured object catalog. The results of the equation and catalog are a ranked according to the object localization suitability in a comparison table. Our comparison demonstrates that objects such as buildings or trees are more suitable than street lane markings for self-localization. However, most current datasets do not include the proposed instantiated objects. The paper addresses this issue, assists in the object selection for outdoor localization methods and provides input for the creation of future-oriented datasets and autonomous driving maps.}, language = {en} }