piwik-script

Deutsch Intern
    Chair of Computer Science I - Algorithms and Complexity

    Dr. Thomas van Dijk

    Lehrstuhl für Informatik I
    Universität Würzburg
    Am Hubland
    D-97074 Würzburg

    Room: 01.002, M4

    Tel.: +49 (0) 931-31-89040
    Fax: +49 (0) 931-31-84600

    Email: thomas.van.dijk@uni-wuerzburg.de

    Twitter: @tvdmaps GitHub: tcvdijk
    Youtube: YouTube    

     


    Research Interests

    • Algorithmically-guided user interaction
    • Algorithms for Geographic Information Systems
    • Implementation; computational experiments
    • Exact algorithms (exponential-time / parameterised ...)

    Awards

    • 2nd place out of 15 submissions ($300), ACM SIGSPATIAL Cup 2018. For “Wüpstream: efficient enumeration of upstream features (GIS cup),’’ with Tobias Greiner, Bas den Heijer, Nadja Henning, Felix Klesen, and Andre Löffler.
    • Best Fast-forward Presentation at ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems 2018. For “Realtime linear cartograms and metro maps,” with Dieter Lutz.
    • Shortlisted for membership of the Young Academy of the Bavarian Academy of Sciences, class of 2017.
    • ACM Computing Review’s “Best of Computing” list of notable publications, 2016. For ”Matching Labels and Markers in Historical Maps: An Algorithm with
      Interactive Postprocessing,” with Benedikt Budig and Alexander Wolff.
    • Best Paper award, theory track, at the International Conference on Graph Drawing and Network Visualization. For “Block Crossings in Storyline Visualizations.” with Martin Fink, Norbert Fischer, Fabian Lipp, Peter Markfelder, Alex Ravsky, Subhash Suri, Alexander Wolff.
    • Best Poster Award Runners up at ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems 2015 (ACMGIS) for "There and Back Again: Using Fréchet-Distance Diagrams to Find Trajectory Turning Points.with Lukas Beckmann, Benedikt Budig and Johannes Schamel.
    • Best Applied Paper Award at Discovery Science 2015 for "Active Learning for Classifying Template Matches in Historical Maps." [PDF] [ Videowith Benedikt Budig.
    • Best student contribution at Schematic Mapping 2014 for "An automated method for circular-arc metro maps." [PDFwith Arthur van Goethem and Wouter Meulemans.
    • Best paper at MapInteract 2014 for "Matching Labels and Markers in Historical Maps: an Algorithm with Interactive Postprocessing." with Benedikt Budig and Alexander Wolff.
    • Best Fast-forward Presentation and Runner-up Best Poster at ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems 2013 (ACMGIS) for "Accentuating Focus Maps via Partial Schematization." [PDFwith Arthur van Goethem, Jan-Henrik Haunert, Wouter Meulemans and Bettina Speckmann.
    • Best Short Presentation at Web and Wireless GIS 2013 (W2GIS) for "A Probabilistic Model for Road Selection in Mobile Maps" [PPTwith Jan-Henrik Haunert.

    Supervision

    PhD Thesis

    Master Thesis

    • Maximilian Schmitt: Tour Planning under Heterogeneous Metrics
    • Andre Löffler: Snapping Graph Drawings to the Grid
    • Benedikt Budig: Algorithmic Analysis of Historical maps
    • Dieter Lutz: Realtime Linear Cartograms using Least-Squares Optimisation

    Bachelor Thesis

    • Fabian Sieper: Assigning Edge Directions in Metro Networks
    • Julian Walter: Rotation and Scale Invariant Template Matching for Historical Maps
    • Peter Markfelder: Optimal Drawings of Storylines with Block Crossings
    • Martin Becker: String Matching of Historical Typonyms
    • Fabian Feitsch: From Many User-Contributed Polygons to One Polygon Consensus
    • Lukas Beckmann: Analysis of Turning Points on GPS Trajectories using the Fréchet Distance

     


    Teaching

    2020 Summer Lecture Algorithms for Geographic Information Systems
        Seminar Algorithms for Programming Competitions
    2019 Winter Lecture Algorithmic Geometry
      Summer Lecture Algorithms for Geographic Information Systems
        Seminar Algorithms for Programming Competitions
    2018 Summer Vorlesung  Algorithms for Geographic Information Systems
        Seminar Graph Visualisation
    2017 Winter Lecture Exact Algorithms (complete overhaul of content)
      Summer Lecture Algorithms for Geographic Information Systems
        Seminar Algorithms for Programming Competitions (my design for a seminar)
    2016 Winter Seminar Algorithms for Information Extraction from Historical Maps
      Summer Lecture Algorithms for Geographic Information Systems
    2015 Summer Lecture Algorithms for Geographic Information Systems
    2014 Winter Seminar Visualisation of Geographic Networks
      Summer Lecture Algorithms for Geographic Information Systems
    2013 Winter Tutorial Approximation Algorithms
    2012   Winter Tutorial Algorithms for Geographic Information Systems
      Summer Tutorial Exact Algorithms

     


    Publications

    [ 2020 ] [ 2019 ] [ 2018 ] [ 2017 ] [ 2016 ] [ 2015 ] [ 2014 ] [ 2013 ] [ 2011 ] [ 2010 ] [ 2009 ] [ 2008 ] [ 2007 ]

    2020 [ to top ]

    • 1.
      Chaplick, S., van Dijk, T.C., Kryven, M., Park, J.-W., Ravsky, A., Wolff, A.: Bundled Crossings Revisited. Journal of Graph Algorithms & Applications. 35 pages (2020).
       

    2019 [ to top ]

    • 1.
      van Dijk, T.C., Löffler, A.: Practical Topologically Safe Rounding of Geographic Networks. In: Kashani, F.B., Trajcevski, G., Güting, R.H., Kulik, L., and Newsam, S.D. (eds.) Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems. pp. 239–248. ACM (2019).
       
    • 2.
      van Dijk, T.C.: Algorithmically-Assisted Metro Map Design. In: Roberts, M. and Nöllenburg, M. (eds.) Proc. 2nd Schematic Mapping Workshop (SMW 2019) (2019).
       
    • 3.
      Chaplick, S., van Dijk, T.C., Kryven, M., won Park, J., Ravsky, A., Wolff, A.: Bundled Crossings Revisited. 35th European Workshop on Computational Geometry (EuroCG 19) (2019).
       

    2018 [ to top ]

    • 1.
      Chan, T.M., van Dijk, T.C., Fleszar, K., Spoerhase, J., Wolff, A.: Stabbing Rectangles by Line Segments – How Decomposition Reduces the Shallow-Cell Complexity. Proc. 29th Ann. Int. Symp. Algorithms Comput. (ISAAC’18). p. 61:1–. Schloss Dagstuhl -- Leibniz-Zentrum für Informatik (2018).
       
    • 2.
      van Dijk, T.C.: Aktives Lernen für Informationsextraktion aus historischen Karten. In: Meinel, G., Schumacher, U., Behnisch, M., and Krüger, T. (eds.) Flächennutzungsmonitoring X. pp. 181–186. RHOMBOS (2018).
       
    • 3.
      van Dijk, T.C., Lutz, D.: Realtime linear cartograms and metro maps. In: Banaei-Kashani, F., Hoel, E.G., Güting, R.H., Tamassia, R., and Xiong, L. (eds.) SIGSPATIAL/GIS. pp. 488–491. ACM (2018).
       
    • 4.
      van Dijk, T.C., Greiner, T., den Heijer, B., Henning, N., Klesen, F., Löffler, A.: Wüpstream: efficient enumeration of upstream features (GIS cup). In: Banaei-Kashani, F., Hoel, E.G., Güting, R.H., Tamassia, R., and Xiong, L. (eds.) SIGSPATIAL/GIS. pp. 626–629. ACM (2018).
       
    • 5.
      Barz, B., van Dijk, T.C., Spaan, B., Denzler, J.: Putting User Reputation on the Map: Unsupervised Quality Control for Crowdsourced Historical Data. 2nd ACM SIGSPATIAL Workshop on Geospatial Humanities (2018).
       

    2017 [ to top ]

    • 1.
      Budig, B., van Dijk, T.C.: Journeys of the Past: A Hidden Markov Approach to Georeferencing Historical Itineraries. In: Jones, C.B. and Purves, R.S. (eds.) GIR’17 Proceedings of the 11th Workshop on Geographic Information Retrieval. pp. 7:1–7:10. ACM (2017).
       
    • 2.
      van Dijk, T.C., Wolff, A.: Algorithmically-Guided User Interaction. In: Hoel, E., Newsam, S.D., Ravada, S., Tamassia, R., and Trajcevski, G. (eds.) SIGSPATIAL’17 Proceedings of the 25th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems. pp. 11:1–11:4. ACM (2017).
       
    • 3.
      van Dijk, T.C., Fink, M., Fischer, N., Lipp, F., Markfelder, P., Ravsky, A., Suri, S., Wolff, A.: Block Crossings in Storyline Visualizations. Journal of Graph Algorithms & Applications. 21, 873–913 (2017).
       
    • 4.
      van Dijk, T.C., Lipp, F., Markfelder, P., Wolff, A.: Computing Storyline Visualizations with Few Block Crossings. Proceedings of the 25th International Symposium on Graph Drawing and Network Visualization. (2017).
       

    2016 [ to top ]

    • 1.
      van Dijk, T.C., Haunert, J.-H., Oehrlein, J.: Location-dependent generalization of road networks based on equivalent destinations. Comput. Graph. Forum. 35, 451–460 (2016).
       
    • 2.
      van Dijk, T.C., Fink, M., Fischer, N., Lipp, F., Markfelder, P., Ravsky, A., Suri, S., Wolff, A.: Block Crossings in Storyline Visualizations. Proc. 24nd Int. Sympos. Graph Drawing. (2016).
       
    • 3.
      Löffler, A., van Dijk, T.C., Wolff, A.: Snapping Graph Drawings to the Grid Optimally. Proc. 24nd Int. Sympos. Graph Drawing. (2016).
       
    • 4.
      Budig, B., van Dijk, T.C., Wolff, A.: Matching Labels and Markers in Historical Maps: an Algorithm with Interactive Postprocessing. Transactions on Spatial Algorithms and Systems. (2016).
       
    • 5.
      Budig, B., van Dijk, T.C., Kirchner, F.: Glyph Miner: A System for Efficiently Extracting Glyphs from Early Prints in the Context of OCR. In: Adam, N.R., Cassel, L. (Boots), Yesha, Y., Furuta, R., and Weigle, M.C. (eds.) Proceedings of the 16th ACM/IEEE-CS on Joint Conference on Digital Libraries. p. 31–34. ACM (2016).
       

    2015 [ to top ]

    • 1.
      Beckmann, L., Budig, B., van Dijk, T.C., Schamel, J.: There and Back Again: Using Fréchet-Distance Diagrams to Find Trajectory Turning Points. Proceedings of the 23rd ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL 2015). p. 238–241. ACM (2015).
       
    • 2.
      Budig, B., Dijk, T.C. van: Active Learning for Classifying Template Matches in Historical Maps. In: Japkowicz, N. and Matwin, S. (eds.) Discovery Science. pp. 33–47. Springer International Publishing (2015).
       

    2014 [ to top ]

    • 1.
      van Dijk, T.C., van Goethem, A., Haunert, J.-H., Meulemans, W., Speckmann, B.: Map Schematization with Circular Arcs. Geographic Information Science. 8728, 1–17 (2014).
       
    • 2.
      Nederlof, J., van Rooij, J.M., van Dijk, T.C.: Inclusion/Exclusion Meets Measure and Conquer. Algorithmica. 69, 685–740 (2014).
       
    • 3.
      van Dijk, T.C., van Goethem, A., Haunert, J., Meulemans, W., Speckmann, B.: An Automated Method for Circular-Arc Metro Maps. Schematic Mapping. (2014).
       
    • 4.
      Bekos, M.A., van Dijk, T.C., Fink, M., Kindermann, P., Kobourov, S.G., Pupyrev, S., Spoerhase, J., Wolff, A.: Improved Approximation Algorithms for Box Contact Representations. Proc. 22th Annual European Symposium on Algorithms (ESA’14). p. 87–99 (2014).
       
    • 5.
      Budig, B., van Dijk, T.C., Wolff, A.: Matching Labels and Markers in Historical Maps: an Algorithm with Interactive Postprocessing. Proceedings of the 2nd ACM SIGSPATIAL International Workshop on MapInteraction. (2014).
       
    • 6.
      Chimani, M., van Dijk, T.C., Haunert, J.-H.: How to Eat a Graph: Computing Selection Sequences for the Continuous Generalization of Road Networks. Proceedings of the 22st ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems. pp. 243–252 (2014).
       
    • 7.
      van Dijk, T.C., Haunert, J.-H.: Interactive focus maps using least-squares optimization. International Journal of Geographical Information Science. 28, 2052–2075 (2014).
       

    2013 [ to top ]

    • 1.
      van Dijk, T.C., van Goethem, A., Haunert, J.-H., Meulemans, W., Speckmann, B.: Accentuating Focus Maps via Partial Schematization. Proceedings of the 21st ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems. p. 428–431. ACM, Orlando, Florida (2013).
       
    • 2.
      van Dijk, T.C., Fleszar, K., Haunert, J.-H., Spoerhase, J.: Road Segment Selection with Strokes and Stability. Proceedings of the 1st ACM SIGSPATIAL International Workshop on MapInteraction. p. 72–77. ACM, Orlando, Florida (2013).
       
    • 3.
      van Dijk, T.C., Haunert, J.-H.: A Probabilistic Model for Road Selection in Mobile Maps. In: Liang, S.H., Wang, X., and Claramunt, C. (eds.) Web and Wireless Geographical Information Systems. pp. 214–222. Springer Berlin Heidelberg (2013).
       

    2011 [ to top ]

    • 1.
      van den Akker, J.M., van Dijk, T.C., Hoogeveen, J.A., Toorop, T.: Optimizing Wireless Sensor Network Flow by Column Generation. Conference of the European Chapter on Combinatorial Optimization. (2011).
       

    2010 [ to top ]

    • 1.
      Bodlaender, H., van Dijk, T.: A Cubic Kernel for Feedback Vertex Set and Loop Cutset. Theory of Computing Systems. 46, 566–597 (2010).
       

    2009 [ to top ]

    • 1.
      van Rooij, J.M.M., Nederlof, J., van Dijk, T.C.: Inclusion/Exclusion Meets Measure and Conquer. In: Fiat, A. and Sanders, P. (eds.) Algorithms - ESA 2009. pp. 554–565. Springer Berlin Heidelberg (2009).
       

    2008 [ to top ]

    • 1.
      Bodlaender, H., Tan, R., van Dijk, T.C., van Leeuwen, J.: Integer Maximum Flow in Wireless Sensor Networks with Energy Constraint. In: Gudmundsson, J. (ed.) Algorithm Theory - SWAT 2008. pp. 102–113. Springer Berlin / Heidelberg (2008).
       

    2007 [ to top ]

    • 1.
      van Dijk, T.C.: Kernelization for Loop Cutset. (2007).