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Learning to solve the min-max mixed-shelves picker-routing problem via hierarchical and parallel decoding Author(s) Luttmann, Laurin, Xie, Lin Type part of book (chapter) Year of publication 2026 Publisher name Cham : Springer Nature Switzerland Picker routing; Mixed-shelves warehouses; Neural combinatorial optimization; Multi-agent reinforcement learning Source Learning and intelligent optimization : 19th International Conference, LION 19Prague, Czech Republic, June 15–19, 2025 : proceedings, part I, S. 32 - 51 ISBN 978-3-032-09156-7 DOI https://doi.org/10.1007/978-3-032-09156-7_3 Lecture Notes in Computer Science ; 15744 RL4CO : an extensive reinforcement learning for combinatorial optimization benchmark Author(s) Berto, Federico, Hua, Chuanbo, Park, Junyoung, Luttmann, Laurin, Ma, Yining, Bu, Fanchen, Wang, Jiarui, Ye, Haoran, Kim, Minsu, Choi, Sanghyeok, Zepeda, Nayeli Gast, Hottung, André, Zhou, Jianan, Bi, Jieyi, Hu, Yu, Liu, Fei, Kim, Hyeonah, Son, Jiwoo, Kim, Haeyeon, Angioni, Davide, Kool, Wouter, Cao, Zhiguang, Zhang, Qingfu, Kim, Joungho, Zhang, Jie, Shin, Kijung, Wu, Cathy, Ahn, Sungsoo, Song, Guojie, Kwon, Changhyun, Tierney, Kevin, Xie, Lin, Park, Jinkyoo Type Conference Proceeding refering Year of publication 2025 Publisher name New York, NY, USA : ACM Source KDD '25 : proceedings of the 31st ACM SIGKDD Conference on Knowledge Discovery and Data Mining V.2, S. 5278 - 5289 ISBN 979-8-4007-1454-2 DOI https://doi.org/10.1145/3711896.3737433 PARCO : parallel autoregressive models for multi-agent combinatorial optimization Author(s) Berto, Federico, Hua, Chuanbo, Luttmann, Laurin, Son, Jiwoo, Park, Junyoung, Ahn, Kyuree, Kwon, Changhyun, Xie, Lin, Park, Jinkyoo Type Conference Proceeding refering Year of publication 2025 Publisher name arXiv Source 39th Conference on Neural Information Processing Systems (NeurIPS 2025), S. 1 - 31 DOI https://doi.org/10.48550/arXiv.2409.03811 Solving the pod repositioning problem with deep reinforced adaptive large neighborhood search Author(s) Xie, Lin, Li, Hanyi Type Conference Proceeding no refering Year of publication 2025 Publisher name arXiv Pod repositioning problem; Deep reinforcement learning; Adaptive large neightborhood; search; Warehouse logistics Source International Conference on Computational Logistics 2025, S. 1 - 14 DOI https://doi.org/10.48550/arXiv.2506.02746 CPU-based layout design for picker-to-parts pallet warehouses Author(s) Looms, Timo, Xie, Lin Type Conference Proceeding no refering Year of publication 2025 Publisher name arXiv Warehouse Layout; CPU-Inspired Design; Picker-to-Parts; Simulation Source Logistics Management 2025 Conference, S. 1 - 15 DOI https://doi.org/10.48550/arXiv.2506.04266 Robuste integrierte Umlauf-, Tagesdienst- und Dienstreihenfolgeplanung im ÖPNV Author(s) Xie, Lin, Kliewer, Natalia Type report Year of publication 2025 Publisher name Kiel : ZBW – Leibniz Information Centre for Economics DOI https://doi.org//hdl.handle.net/10419/319684 An extended CIA-based multi-level model for AHP-driven safety and security decision-making in last-mile robotic systems Author(s) Kolb, Christina, Xie, Lin Type Scientific Article ref. Year of publication 2025 Publisher name Delft, Niederlande : TU Delft OPEN Publishing Autonomous robots; Multi-level model; Human safety; Safety and security co-engineering; Safety-security-dependability; Sensors; Confidentiality; Integrity; Availability Source Journal of progress in safety & security, S. 1 - 19 Volume 1 ISSN 3050-4570 DOI https://doi.org/10.59490/pss.1.2025.8019 Improving approximate and exact approaches based on decision diagrams and dynamic programming for combinatorial optimization Author(s) Nafar, Mohsen Type doctoralthesis Year of publication 2025 Publisher name Bielefeld : Universität Bielefeld A clustering-based variable ordering framework for relaxed decision diagrams for maximum weighted independent set problem Author(s) Nafar, Mohsen, Römer, Michael, Xie, Lin Type Scientific Article not ref. Year of publication 2025 Publisher name Ithaca, NY : arXiv Relaxed decision diagram; Variable ordering; Maximum weighted independent set problem; DD-based branch-and-bound. First page 1 Last page 16 DOI https://doi.org/10.48550/arXiv.2512.15198 Revisiting the richness of integrated vehicle and crew scheduling Author(s) Ge, Liping, Kliewer, Natalia, Nourmohammadzadeh, Abtin, Voß, Stefan, Xie, Lin Type Scientific Article ref. Year of publication 2024 Publisher name Berlin ; Heidelberg : Springer Science and Business Media LLC Source Public transport, S. 775 - 801 Volume 16 Issue/Journal number 3 ISSN 1866-749X DOI https://doi.org/10.1007/s12469-022-00292-6 Security and safety in urban environments : evaluating threats and risks of autonomous last-mile delivery robots Author(s) Kolb, Christina, Xie, Lin Type part of book (chapter) Year of publication 2024 Publisher name Cham : Springer Nature Switzerland Autonomous robots; Multi-level model; Human safety; Safety and security co-engineering; Safety-security-dependability; Sensors Source Computer safety, reliability, and security : SAFECOMP 2024 workshops : DECSoS, SASSUR, TOASTS, and WAISE : Florence, Italy, September 17, 2024 : proceedings, S. 34 - 46 ISBN 9783031687372 DOI https://doi.org/10.1007/978-3-031-68738-9_3 Lecture Notes in Computer Science ; 14989 Neural combinatorial optimization on heterogeneous graphs : an application to the picker routing problem in mixed-shelves warehouses Author(s) Luttmann, Laurin, Xie, Lin Type Conference Proceeding refering Year of publication 2024 Publisher name Washington, DC : Association for the Advancement of Artificial Intelligence (AAAI) Source Proceedings of the 34th International Conference on Automated Planning and Scheduling (ICAPS2024), S. 351 - 359 DOI https://doi.org/10.1609/icaps.v34i1.31494 Vehicle scheduling Author(s) Daduna, Joachim R., Xie, Lin Type part of book (chapter) Year of publication 2024 Publisher name Cham : Springer International Publishing Source Encyclopedia of optimization, S. 1 - 7 ISBN 978-3-030-54621-2 DOI https://doi.org/10.1007/978-3-030-54621-2_704-1 Introducing combi-stations in robotic mobile fulfilment systems : a queueing-theory-based efficiency analysis Author(s) Xie, Lin, Otten, Sonja Type part of book (chapter) Year of publication 2024 Publisher name Cham : Springer Nature Switzerland Source Computational logistics : 15th International Conference, ICCL 2024, Monterrey, Mexico, September 8–10, 2024 : proceedings, S. 3 - 17 ISBN 978-3-031-71993-6 DOI https://doi.org/10.1007/978-3-031-71993-6_1 Lecture Notes in Computer Science ; 15168 Using clustering to strengthen decision diagram bounds for discrete optimization Author(s) Nafar, Mohsen, Römer, Michael Type Conference Proceeding refering Year of publication 2024 Publisher name Washington, DC : AAAI Press Source Proceedings of the 38th AAAI Conference on Artificial Intelligence, S. 8082 - 8089 ISBN 978-1-57735-887-9 URL https://doi.org/10.48448/g3qd-nx83 DOI https://doi.org/10.1609/aaai.v38i8.28647 Strengthening relaxed decision diagrams for maximum independent set problem : novel variable ordering and merge heuristics Author(s) Nafar, Mohsen, Römer, Michael Type Conference Proceeding refering Year of publication 2024 Publisher name Saarbrücken : Wadern : Schloss Dagstuhl – Leibniz-Zentrum für Informatik GmbH, Dagstuhl Publishing Decision diagram; Dynamic programming; Maximum independent set; problem; Dual bound Source 30th International Conference on Principles and Practice of Constraint Programming : CP 2024, September 2–6, 2024, Girona, Spain, S. 1 - 17 ISBN 978-3-95977-336-2 DOI https://doi.org/10.4230/LIPIcs.CP.2024.21 Leibniz International Proceedings in Informatics (LIPIcs) ; Vol. 307 Lookahead, merge and reduce for compiling relaxed decision diagrams for optimization Author(s) Nafar, Mohsen, Römer, Michael Type Conference Proceeding refering Year of publication 2024 Publisher name Cham : Springer Decision diagram; Discrete optimization; Dynamic programming Source Integration of Constraint Programming, Artificial Intelligence, and Operations Research : 21st International Conference, CPAIOR 2024, Uppsala, Sweden, May 28–31, 2024 : Proceedings, Part II, S. 74 - 82 ISBN 978-3-031-60599-4 DOI https://doi.org/10.1007/978-3-031-60599-4_5 Lecture Notes in Computer Science ; 14743 Mystery shopping : improving quality assurance of public transport services for people with restricted mobility using a prototypical mobile application Author(s) Akhgarnusch, Arschad, Voß, Stefan, Ge, Liping Type Conference Proceeding refering Year of publication 2024 Publisher name Honolulu, HI : University of Hawaii at Mānoa Services for all; Inclusion; Accessibility; and Diversity; App development; Mobility restricted user; Mystery shopping; Public transport Source Proceedings of the Annual Hawaii International Conference on System Sciences, S. 1618 - 1627 ISBN 978-0-9981331-7-1 DOI https://doi.org/10.24251/HICSS.2024.204 Formulating and solving integrated order batching and routing in multi-depot AGV-assisted mixed-shelves warehouses Author(s) Xie, Lin, Li, Hanyi, Luttmann, Laurin Type Scientific Article ref. Year of publication 2023 Publisher name Amsterdam : Elsevier BV Logistics; Order batching; Routing; Mixed-shelves storage; AGV-assisted picking Source European journal of operational research, S. 713 - 730 Volume 307 Issue/Journal number 2 ISSN 0377-2217 DOI https://doi.org/10.1016/j.ejor.2022.08.047 Mixed coordinate node link visualization for co-authorship hypergraph networks Author(s) Nafar, Mohsen, Zenouzagh, Hamed Azami Type Scientific Article not ref. Year of publication 2023 Publisher name Ithaca, NY : arXiv First page 1 Last page 10 DOI https://doi.org/10.48550/arXiv.2310.19640 Rectilinear crossing number of the double circular complete bipartite graph Author(s) Nafar, Mohsen Type Scientific Article not ref. Year of publication 2023 Publisher name Ithaca, NY : arXiv Rectilinear crossing number of 𝐾𝑛𝑚; Crossing number bounds; Complete bipartite graph; crossing changes First page 1 Last page 15 DOI https://doi.org/10.48550/arXiv.2310.15882 Robustness and disturbances in public transport Author(s) Ge, Liping, Voß, Stefan, Xie, Lin Type Scientific Article ref. Year of publication 2022 Publisher name Berlin ; Heidelberg : Springer Science and Business Media LLC Public transport; Resilience; Disturbances; Robustness; Delay management; Digital transformation; Bus bridging Source Public transport : planning and operations, S. 191 - 261 Volume 14 Issue/Journal number 1 ISSN 1866-749X DOI https://doi.org/10.1007/s12469-022-00301-8 Comparing two hybrid neural network models to predict real-world bus travel time Author(s) Nimpanomprasert, Thummaporn, Xie, Lin, Kliewer, Natalia Type Scientific Article ref. Year of publication 2022 Publisher name Amsterdam : Elsevier BV Bus travel time predication; Multilayer perceptrons; Long short-term memory neural network; Genetic algorithm; Kalman filter Source Transportation research procedia, S. 393 - 400 Volume 62 ISSN 2352-1465 DOI https://doi.org/10.1016/j.trpro.2022.02.049 Robust optimization for integrated vehicle and crew scheduling based on uncertainty in the main inputs Author(s) Ge, Liping, Nourmohammadzadeh, Abtin, Voss, Stefan, Xie, Lin Type Conference Proceeding refering Year of publication 2022 Source The Fifth Data Science Meets Optimisation Workshop at IJCAI-22 URL https://www.researchgate.net/publication/363383625_Robust_Optimization_for_Integrated_Vehicle_and_Crew_Scheduling_Based_on_Uncertainty_in_the_Main_Inputs Introducing split orders and optimizing operational policies in robotic mobile fulfillment systems Author(s) Xie, Lin, Thieme, Nils, Krenzler, Ruslan, Li, Hanyi Type Scientific Article ref. Year of publication 2021 Publisher name Amsterdam : Elsevier BV Logistics; MIP models; Integrated operational optimization; Robotic mobile fulfillment systems; Split orders Source European journal of operational research, S. 80 - 97 Volume 288 Issue/Journal number 1 ISSN 0377-2217 DOI https://doi.org/10.1016/j.ejor.2020.05.032 Review of transit data sources : potentials, challenges and complementarity Author(s) Ge, Liping, Sarhani, Malek, Voß, Stefan, Xie, Lin Type Scientific Article ref. Year of publication 2021 Publisher name Basel : MDPI Data sources; Public transport; Big data; Transit service; Passenger behavior Source Sustainability, S. 1 - 37 Volume 13 Issue/Journal number 20 ISSN 2071-1050 DOI https://doi.org/10.3390/su132011450 Analysis of semi-open queueing networks using lost customers approximation with an application to robotic mobile fulfilment systems Author(s) Otten, Sonja, Krenzler, Ruslan, Xie, Lin, Daduna, Hans, Kruse, Karsten Type Scientific Article ref. Year of publication 2021 Publisher name Berlin ; Heidelberg ; New York, NY : Springer Science and Business Media LLC Semi-open queueing network; Backordering; Lost customers; Product; form approximation; Robotic mobile fulfilment system; Warehousing Source OR spectrum, S. 603 - 648 Volume 44 Issue/Journal number 2 ISSN 0171-6468 DOI https://doi.org/10.1007/s00291-021-00662-9 Comparison of backpropagation and Kalman filter-based training for neural networks Author(s) Luttmann, Laurin, Mercorelli, Paolo Type Conference Proceeding refering Year of publication 2021 Publisher name Piscataway, NJ : IEEE Backpropagation algorithm; Kalman filter; Neural networks Source 2021 25th International Conference on System Theory, Control and Computing (ICSTCC), S. 234 - 241 ISBN 978-1-6654-1496-8 DOI https://doi.org/10.1109/ICSTCC52150.2021.9607274 Managing information in the case of opinion spamming Author(s) Ge, Liping, Voß, Stefan Type part of book (chapter) Year of publication 2020 Publisher name Cham : Springer International Publishing Opinion spamming; Digital innovation; Information management; Digital transformation Source Design, User Experience, and Usability : Interaction Design : 9th International Conference, DUXU 2020, held as part of the 22nd HCI International Conference, HCII 2020 Copenhagen, Denmark, July 19–24, 2020 : proceedings, part I, S. 370 - 384 ISBN 978-3-030-49713-2 DOI https://doi.org/10.1007/978-3-030-49713-2_26 Lecture Notes in Computer Science ; 12200 From simulation to real-world robotic mobile fulfillment systems Author(s) Xie, Lin, Thieme, Nils, Li, Hanyi Type Scientific Article ref. Year of publication 2019 Publisher name Bremen : Bundesvereinigung Logistik ERP System; Simulation; Robotic Mobile Fulfillment Systems; Warehousing Systems Source Logistics research, S. 1 - 13 Volume 12 Issue/Journal number 1 URL https://www.econstor.eu/bitstream/10419/297176/1/1691909475.pdf DOI https://doi.org/10.23773/2019_9 RAWSim-O : a simulation framework for robotic mobile fulfillment systems Author(s) Merschformann, Marius, Xie, Lin, Li, Hanyi Type Scientific Article ref. Year of publication 2018 Publisher name Bremen : Bundesvereinigung Logistik Robotic Mobile Fulfillment Systems; Simulation; Warehousing Systems; Parts-to-Picker Systems; Demonstration Source Logistics research, S. 1 - 11 Volume 11 Issue/Journal number 8 ISSN 1865-0368 DOI https://doi.org/10.23773/2018_8 Deterministic pod repositioning problem in robotic mobile fulfillment systems Author(s) Krenzler, Ruslan, Xie, Lin, Li, Hanyi Type Scientific Article not ref. Year of publication 2018 Publisher name arXiv Logistics; Applied combinatorial optimization; Robotic mobile fulfillment; system; Warehouse Source arXiv, S. 1 - 37 DOI https://doi.org/10.48550/arXiv.1810.05514 Simulated annealing approach to nurse rostering benchmark and real-world instances Author(s) Knust, Frederik, Xie, Lin Type Scientific Article ref. Year of publication 2017 Publisher name Dordrecht : Springer Science and Business Media LLC Nurse rostering problem; Flexible model; α|β|γ notation; Simulated; annealing; Mixed integer programming; Real-world data; Duty rostering software Source Annals of operations research, S. 187 - 216 Volume 272 Issue/Journal number 1-2 ISSN 0254-5330 DOI https://doi.org/10.1007/s10479-017-2546-8 Metaheuristics approach for solving personalized crew rostering problem in public bus transit Author(s) Xie, Lin, Merschformann, Marius, Kliewer, Natalia, Suhl, Leena Type Scientific Article ref. Year of publication 2017 Publisher name Dordrecht : Springer Science and Business Media LLC Ant colony optimization; Simulated annealing; Tabu search; Crew; rostering problem; Personalized/non-cyclic rostering; Public transport Source Journal of heuristics, S. 321 - 347 Volume 23 Issue/Journal number 5 ISSN 1381-1231 DOI https://doi.org/10.1007/s10732-017-9348-7 Multi-agent path finding with kinematic constraints for robotic mobile fulfillment systems Author(s) Merschformann, Marius, Xie, Lin, Erdmann, Daniel Type Scientific Article not ref. Year of publication 2017 Source arXiv, S. 1 - 38 DOI https://doi.org/10.48550/arXiv.1706.09347 Decision support for crew rostering in public transit : web-based optimization system for cyclic and non-cyclic rostering Author(s) Xie, Lin Type doctoralthesis Year of publication 2015 Publisher name Wiesbaden : Springer Gabler Cyclic Crew Rostering; Decision Support System; Multi-Objective Crew Rostering; Non-Cyclic Crew Rostering; Transportation ISBN 978-3-658-08166-9 978-3-658-08167-6 DOI https://doi.org/10.1007/978-3-658-08167-6 Cyclic and non-cyclic crew rostering problems in public bus transit Author(s) Xie, Lin, Suhl, Leena Type Scientific Article ref. Year of publication 2014 Publisher name Berlin ; Heidelberg ; New York, NY : Springer Science and Business Media LLC Transportation; Crew rostering; Multi-commodity network flow; Cyclic crew rostering; Non-cyclic crew rostering Source OR spectrum : quantitative approaches in management, S. 99 - 136 Volume 37 Issue/Journal number 1 ISSN 0171-6468 DOI https://doi.org/https://doi.org/10.1007/s00291-014-0364-9 Integrated driver rostering problem in public bus transit Author(s) Xie, Lin, Kliewer, Natalia, Suhl, Leena Type Scientific Article ref. Year of publication 2012 Publisher name Amsterdam : Elsevier BV Integrated driver rostering problem; Network optimization model; Public transport; Rotation-based rostering; Simulated annealing Source Procedia : social and behavioral sciences, S. 656 - 665 Volume 54 ISSN 1877-0428 DOI https://doi.org/10.1016/j.sbspro.2012.09.783 A duty-block network approach for an integrated driver rostering problem in public bus transport Author(s) Xie, Lin, Suhl, Leena Type Conference Proceeding refering Year of publication 2012 Publisher name Southampton, UK : WIT Press Integrated driver rostering problem; Network optimization model; Public transport; Rotation-based rostering Source WIT transactions on the built environment, S. 295 - 306 DOI https://doi.org/10.2495/UT120261 ERP application in China : an overview Author(s) Ge, Liping, Voß, Stefan Type Scientific Article ref. Year of publication 2009 Publisher name Amsterdam : Elsevier BV Enterprise resource planning; Information systems; mrp; Supply chain management Source International journal of production economics, S. 501 - 507 Volume 122 Issue/Journal number 1 ISSN 0925-5273 DOI https://doi.org/10.1016/j.ijpe.2009.06.009
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