Key Words
Publications by Type
Chapter (part of a book) [ to top ]

Haunert, J.H., Wolff, A.: Räumliche Analyse durch kombinatorische Optimierung. In: Freeden, W. and Rummel, R. (eds.) Handbuch der Geodäsie (6 Bände). p. 139. Springer Berlin Heidelberg (2016).

Wolff, A.: Graph Drawing and Cartography. In: Tamassia, R. (ed.) Handbook of Graph Drawing and Visualization. p. 697736. CRC Press, Boca Raton, FL (2013).[ BibTeX ]

Wolff, A., Knipping, L., van Kreveld, M., Strijk, T., Agarwal, P.K.: A Simple and Efficient Algorithm for HighQuality Line Labeling. In: Atkinson, P.M. and Martin, D.J. (eds.) Innovations in GIS VII: GeoComputation. p. 147159. Taylor & Francis (2000).

Wolff, A.: The Hardness of Approximating Set Cover. In: Mayr, E.W., Prömel, H.J., and Steger, A. (eds.) Lectures on Proof Verification and Approximation Algorithms. p. 249262. SpringerVerlag (1998).
Article in journal, newspaper, or magazine [ to top ]

Bruckdorfer, T., Cornelsen, S., Gutwenger, C., Kaufmann, M., Montecchiani, F., Nöllenburg, M., Wolff, A.: Progress on Partial Edge Drawings. Journal of Graph Algorithms & Applications. 21, 757786 (2017).

Bekos, M.A., van Dijk, T.C., Fink, M., Kindermann, P., Kobourov, S., Pupyrev, S., Spoerhase, J., Wolff, A.: Improved Approximation Algorithms for Box Contact Representations. Algorithmica. 77, 902920 (2017).

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, 873913 (2017).

Das, A., Fleszar, K., Kobourov, S.G., Spoerhase, J., Veeramoni, S., Wolff, A.: Approximating the Generalized Minimum Manhattan Network Problem. Algorithmica. (2017).

Haunert, J.H., Wolff, A.: Beyond Maximum Independent Set: An Extended Integer Programming Formulation for Point Labeling. International Journal of GeoInformation. 6, article 342, 20 pages (2017).

Kindermann, P., Niedermann, B., Rutter, I., Schaefer, M., Schulz, A., Wolff, A.: MultiSided Boundary Labeling. Algorithmica. 76, 225258 (2016).

Lipp, F., Wolff, A., Zink, J.: Faster ForceDirected Graph Drawing with the WellSeparated Pair Decomposition. Algorithms. 9, article 53, 17 pages (2016).

Budig, B., Dijk, T.C.V., Wolff, A.: Matching Labels and Markers in Historical Maps: An Algorithm with Interactive Postprocessing. ACM Trans. Spatial Algorithms Syst. 2, 13:113:24 (2016).

Bekos, M.A., van Dijk, T.C., Kindermann, P., Wolff, A.: Simultaneous Drawing of Planar Graphs with RightAngle Crossings and Few Bends. Journal of Graph Algorithms & Applications. 20, 133158 (2016).

Das, A., Gansner, E.R., Kaufmann, M., Kobourov, S., Spoerhase, J., Wolff, A.: Approximating Minimum Manhattan Networks in Higher Dimensions. Algorithmica. 71, 3652 (2015).

Fink, M., Pupyrev, S., Wolff, A.: Ordering Metro Lines by Block Crossings. Journal of Graph Algorithms & Applications. 19, 111153 (2015).

Wismath, S., Wolff, A.: Guest Editors' Foreword (Special Issue of Selected Papers from the 21st Int. Symp. Graph Drawing). Journal of Graph Algorithms & Applications. 18, 174175 (2014).

Angelini, P., Eppstein, D., Frati, F., Kaufmann, M., Lazard, S., Mchedlidze, T., Teillaud, M., Wolff, A.: Universal Point Sets for Drawing Planar Graphs with Circular Arcs. Journal of Graph Algorithms & Applications. 18, 313324 (2014).

Fink, M., Haunert, J.H., Spoerhase, J., Wolff, A.: Selecting the Aspect Ratio of a Scatter Plot Based on Its Delaunay Triangulation. IEEE Transactions on Visualization and Computer Graphics. 19, 23262335 (2013).

Fink, M., Haunert, J.H., Schulz, A., Spoerhase, J., Wolff, A.: Algorithms for Labeling Focus Regions. IEEE Transactions on Visualization and Computer Graphics. 18, 25832592 (2012).

Rutter, I., Wolff, A.: Augmenting the Connectivity of Planar and Geometric Graphs. Journal of Graph Algorithms & Applications. 16, 599628 (2012).

Buchin, K., Buchin, M., Byrka, J., Nöllenburg, M., Okamoto, Y., Silveira, R.I., Wolff, A.: Drawing (Complete) Binary Tanglegrams: Hardness, Approximation, FixedParameter Tractability. Algorithmica. 62, 309332 (2012).

Atienza, N., de Castro, N., Cortés, C., Garrido, M.Á., Grima, C.I., Hernández, G., Márquez, A., MorenoGonzález, A., Nöllenburg, M., Portillo, J.R., Reyes, P., Valenzuela, J., Villar, M.T., Wolff, A.: Cover Contact Graphs. Journal of Computational Geometry. 3, (2012).

Nöllenburg, M., Wolff, A.: Drawing and Labeling HighQuality Metro Maps by MixedInteger Programming. IEEE Transactions on Visualization and Computer Graphics. 17, 626641 (2011).

Rutter, I., Wolff, A.: Computing Large Matchings Fast. ACM Transactions on Algorithms. 7, article 1, 21 pages (2010).

Haunert, J.H., Wolff, A.: Area aggregation in map generalisation by mixedinteger programming. International Journal of Geographical Information Science. 24, 18711897 (2010).

Erlebach, T., Hagerup, T., Jansen, K., Minzlaff, M., Wolff, A.: Trimming of Graphs, with Application to Point Labeling. Theory of Computing Systems. 47, 613636 (2010).

Been, K., Nöllenburg, M., Poon, S.H., Wolff, A.: Optimizing Active Ranges for Consistent Dynamic Map Labeling. Computational Geometry: Theory and Applications. 43, 312328 (2010).

Goaoc, X., Kratochvíl, J., Okamoto, Y., Shin, C.S., Spillner, A., Wolff, A.: Untangling a Planar Graph. Discrete Computational Geometry. 42, 542569 (2009).

Ahn, H.K., Alt, H., Asano, T., Bae, S.W., Brass, P., Cheong, O., Knauer, C., Na, H.S., Shin, C.S., Wolff, A.: Constructing Optimal Highways. International Journal of Foundations of Computer Science. 20, 323 (2009).

Benkert, M., Gudmundsson, J., Knauer, C., van Oostrum, R., Wolff, A.: A PolynomialTime Approximation Algorithm for a Geometric Dispersion Problem. International Journal of Computational Geometry and Applications. 19, 267288 (2009).

Bereg, S., Mutsanas, N., Wolff, A.: Matching Points with Rectangles and Squares. Computational Geometry: Theory and Applications. 42, 93108 (2009).

Gerdjikov, S., Wolff, A.: Decomposing a Simple Polygon into PseudoTriangles and Convex Polygons. Computational Geometry: Theory and Applications. 41, 2130 (2008).

Görke, R., Shin, C.S., Wolff, A.: Constructing the City Voronoi Diagram Faster. International Journal of Computational Geometry and Applications. 18, 275294 (2008).

Benkert, M., Gudmundsson, J., Haverkort, H., Wolff, A.: Constructing InterferenceMinimal Networks. Computational Geometry: Theory and Applications. 40, 179194 (2008).

Reinbacher, I., Benkert, M., van Kreveld, M., Mitchell, J.S.B., Snoeyink, J., Wolff, A.: Delineating Boundaries for Imprecise Regions. Algorithmica. 50, 386414 (2008).

Nöllenburg, M., Merrick, D., Wolff, A., Benkert, M.: Morphing Polylines: A Step Towards Continuous Generalization. Computers, Environment and Urban Systems. 32, 248260 (2008).

Bekos, M.A., Kaufmann, M., Symvonis, A., Wolff, A.: Boundary Labeling: Models and Efficient Algorithms for Rectangular Maps. Computational Geometry: Theory and Applications. 36, 215236 (2007).

Wolff, A.: Drawing Subway Maps: A Survey. Informatik~ Forschung & Entwicklung. 22, 2344 (2007).

Knauer, C., Schramm, É., Spillner, A., Wolff, A.: Configurations with Few Crossings in Topological Graphs. Computational Geometry: Theory and Applications. 37, 104114 (2007).

Benkert, M., Wolff, A., Widmann, F., Shirabe, T.: The Minimum Manhattan Network Problem: Approximations and Exact Solutions. Computational Geometry: Theory and Applications. 35, 188208 (2006).

Daescu, O., Mi, N., Shin, C.S., Wolff, A.: FarthestPoint Queries with Geometric and Combinatorial Constraints. Computational Geometry: Theory and Applications. 33, 174185 (2006).

Asano, T., de Berg, M., Cheong, O., Everett, H., Haverkort, H., Katoh, N., Wolff, A.: Optimal Spanners for AxisAligned Rectangles. Computational Geometry: Theory and Applications. 30, 5977 (2005).

Gudmundsson, J., Haverkort, H., Park, S.M., Shin, C.S., Wolff, A.: Facility Location and the Geometric MinimumDiameter Spanning Tree. Computational Geometry: Theory and Applications. 27, 87106 (2004).

Poon, S.H., Shin, C.S., Strijk, T., Uno, T., Wolff, A.: Labeling Points with Weights. Algorithmica. 38, 341362 (2003).

Wolff, A., Thon, M., Xu, Y.: A Simple Factor2/3 Approximation Algorithm for TwoCircle Point Labeling. International Journal of Computational Geometry and Applications. 12, 269281 (2002).

Kapoor, V., Kühl, D., Wolff, A.: A Tutorial for Designing Flexible Geometric Algorithms. Algorithmica. 33, 5270 (2002).

van Dijk, S., van Kreveld, M., Strijk, T., Wolff, A.: Towards an Evaluation of Quality for Names Placement Methods. International Journal of Geographical Information Science. 16, 641661 (2002).

Wagner, F., Wolff, A., Kapoor, V., Strijk, T.: Three Rules Suffice for Good Label Placement. Algorithmica. 30, 334349 (2001).

Strijk, T., Wolff, A.: Labeling Points with Circles. International Journal of Computational Geometry and Applications. 11, 181195 (2001).

van Kreveld, M., Strijk, T., Wolff, A.: Point Labeling with Sliding Labels. Computational Geometry: Theory and Applications. 13, 2147 (1999).

Wagner, F., Wolff, A.: A Practical Map Labeling Algorithm. Computational Geometry: Theory and Applications. 7, 387404 (1997).
Book or Conference Proceedings [ to top ]

Wismath, S., Wolff, A. eds: Proceedings of the 21st International Symposium on Graph Drawing (GD'13). SpringerVerlag (2013).[ BibTeX ]

Kobourov, S., Wolff, A., van Ham, F. eds: Putting Data on the Map. Schloss Dagstuhl~ LeibnizZentrum für Informatik (2012).

Dykes, J., MüllerHannemann, M., Wolff, A. eds: Schematization in Cartography, Visualization, and Computational Geometry. , Schloss Dagstuhl (2011).

Gudmundsson, J., Klein, R., Narasimhan, G., Smid, M., Wolff, A. eds: Geometric Networks and Metric Space Embeddings. , Schloss Dagstuhl (2007).
Article in Conference Proceedings [ to top ]

Kryven, M., Ravsky, A., Wolff, A.: Drawing Graphs on Few Circles and Few Spheres. In: Frati, F. and Ma, K.L. (eds.) Proc. 25th Int. Symp. Graph Drawing & Network Vis. (GD'17). SpringerVerlag (2017).

Peng, D., Wolff, A., Haunert, J.H.: Using the A\($^\star$\) Algorithm to Find Optimal Sequences for Area Aggregation. In: Peterson, M.P. (ed.) Proc. 28th Int. Cartogr. Conf. (ICC'17)  Advances in Cartogr. & GIScience. p. 389404. SpringerVerlag (2017).

Chaplick, S., Kryven, M., Liotta, G., Löffler, A., Wolff, A.: Beyond Outerplanarity. In: Frati, F. and Ma, K.L. (eds.) Proc. 25th Int. Symp. Graph Drawing & Network Vis. (GD'17). SpringerVerlag (2017).

Chaplick, S., Fleszar, K., Lipp, F., Ravsky, A., Verbitsky, O., Wolff, A.: The Complexity of Drawing Graphs on Few Lines and Few Planes. In: Ellen, F., Kolokolova, A., and Sack, J.R. (eds.) Proc. Algorithms Data Struct. Symp. (WADS'17). p. 265276. SpringerVerlag (2017).

Dijk, T.C.V., Lipp, F., Markfelder, P., Wolff, A.: Computing Storylines with Few Block Crossings. In: Frati, F. and Ma, K.L. (eds.) Proc. 25th Int. Symp. Graph Drawing & Network Vis. (GD'17). SpringerVerlag (2017).

Chaplick, S., Chimani, M., Cornelsen, S., Da Lozzo, G., Nöllenburg, M., Patrignani, M., Tollis, I.G., Wolff, A.: Planar LDrawings of Directed Graphs. In: Frati, F. and Ma, K.L. (eds.) Proc. 25th Int. Symp. Graph Drawing & Network Vis. (GD'17). SpringerVerlag (2017).

Chimani, M., Felsner, S., Kobourov, S., Ueckerdt, T., Valtr, P., Wolff, A.: On the Maximum Crossing Number. In: Brankovic, L., Ryan, J., and Smith, B. (eds.) Proc. 28th Int. Workshop Combin. Algorithms (IWOCA'17). SpringerVerlag (2017).

Haunert, J.H., Wolff, A.: Beyond Maximum Independent Set: An Extended Model for PointFeature Label Placement. Proc. ISPRS (Commission II, WG II/2). p. 109114 (2016).

van Dijk, T.C., Fink, M., Fischer, N., Lipp, F., Markfelder, P., Ravsky, A., Suri, S., Wolff, A.: Block Crossings in Storyline Visualizations. In: Hu, Y. and Nöllenburg, M. (eds.) Proc. 24th Int. Symp. Graph Drawing & Network Vis. (GD'16). p. 382398. SpringerVerlag (2016).

Evans, W.S., Fleszar, K., Kindermann, P., Saeedi, N., Shin, C.S., Wolff, A.: Minimum Rectilinear Polygons for Given Angle Sequences. In: Akiyama, J., Ito, H., and Sakai, T. (eds.) Proc. Japan. Conf. Discrete Comput. Geom. Graphs (JCDCGG'16). p. 105119. SpringerVerlag (2016).

Chaplick, S., Lipp, F., Park, J.won, Wolff, A.: Obstructing Visibilities with One Obstacle. In: Hu, Y. and Nöllenburg, M. (eds.) Proc. 24th Int. Symp. Graph Drawing & Network Vis. (GD'16). p. 295308. SpringerVerlag (2016).

Löffler, A., van Dijk, T.C., Wolff, A.: Snapping Graph Drawings to the Grid Optimally. In: Hu, Y. and Nöllenburg, M. (eds.) Proc. 24th Int. Symp. Graph Drawing & Network Vis. (GD'16). p. 144151. SpringerVerlag (2016).

Chaplick, S., Fleszar, K., Lipp, F., Ravsky, A., Verbitsky, O., Wolff, A.: Drawing Graphs on Few Lines and Few Planes. In: Hu, Y. and Nöllenburg, M. (eds.) Proc. 24th Int. Symp. Graph Drawing & Network Vis. (GD'16). p. 166180. SpringerVerlag (2016).

Bekos, M.A., van Dijk, T.C., Kindermann, P., Wolff, A.: Simultaneous Drawing of Planar Graphs with RightAngle Crossings and Few Bends. In: Rahman, M.S. and Tomita, E. (eds.) Proc. 9th Int. Workshop Algorithms Comput. (WALCOM'15). p. 222233. SpringerVerlag (2015).

Schwartges, N., Morgan, B., Haunert, J.H., Wolff, A.: Labeling Streets Along a Route in Interactive 3D Maps Using Billboards. In: Bacao, F., Santos, M.Y., and Painho, M. (eds.) Proc. 18th AGILE Conf. Geogr. Inform. Sci. (AGILE'15). p. 269287. SpringerVerlag (2015).[ BibTeX ]

Bereg, S., Fleszar, K., Kindermann, P., Pupyrev, S., Spoerhase, J., Wolff, A.: Colored NonCrossing Euclidean Steiner Forest. In: Elbassioni, K. and Makino, K. (eds.) Proc. 26th Annu. Int. Symp. Algorithms Comput. (ISAAC'15). p. 113. SpringerVerlag (2015).

Chaplick, S., Kindermann, P., Lipp, F., Wolff, A.: Solving Optimization Problems on Orthogonal Ray Graphs. Proc. Japan. Conf. Discrete Comput. Geom. Graphs (JCDCGG'15). p. 2 pp. (2015).

Alam, M.J., Bläsius, T., Rutter, I., Ueckerdt, T., Wolff, A.: Pixel and Voxel Representations of Graphs. In: Di Giacomo, E. and Lubiw, A. (eds.) Proc. 23rd Int. Symp. Graph Drawing & Network Vis. (GD'15). p. 472486. SpringerVerlag (2015).

Lipp, F., Wolff, A.L., Zink, J.: Faster ForceDirected Graph Drawing with the WellSeparated Pair Decomposition. In: Di Giacomo, E. and Lubiw, A. (eds.) Proc. 23rd Int. Symp. Graph Drawing & Network Vis. (GD'15). p. 5259. SpringerVerlag (2015).

Aulbach, M., Fink, M., Schuhmann, J., Wolff, A.: Drawing Graphs within Restricted Area. In: Duncan, C. and Symvonis, A. (eds.) Proc. 22nd Int. Sympos. Graph Drawing (GD'14). p. 367379. SpringerVerlag (2014).

Alam, M.J., Bekos, M.A., Kaufmann, M., Kindermann, P., Kobourov, S.G., Wolff, A.: Smooth Orthogonal Drawings of Planar Graphs. In: Pardo, A. and Viola, A. (eds.) Proc. 11th Latin American Sympos. Theor. Inform. (LATIN'14). p. 144155. SpringerVerlag (2014).

Bekos, M.A., van Dijk, T.C., Fink, M., Kindermann, P., Kobourov, S., Pupyrev, S., Spoerhase, J., Wolff, A.: Improved Approximation Algorithms for Box Contact Representations. In: Schulz, A. and Wagner, D. (eds.) Proc. 22nd Annu. Europ. Symp. Algorithms (ESA'14). p. 8799. SpringerVerlag, Wroc{\l}aw (2014).

Peng, D., Wolff, A.: Watch Your Data Structures. Proc. 22th Annu. Geograph. Inform. Sci. Research Conf. UK (GISRUK'14). , Glasgow (2014).

Kindermann, P., Schulz, A., Spoerhase, J., Wolff, A.: On Monotone Drawings of Trees. In: Duncan, C. and Symvonis, A. (eds.) Proc. 22nd Int. Sympos. Graph Drawing (GD'14). p. 488500. SpringerVerlag (2014).

Schwartges, N., Wolff, A., Haunert, J.H.: Labeling Streets in Interactive Maps using Embedded Labels. In: Huang, Y., Schneider, M., Gertz, M., Krumm, J., and Sankaranarayanan, J. (eds.) Proc. 22nd ACM SIGSPATIAL Int. Conf. Advances Geogr. Inform. Syst. (ACMGIS'14). p. 517520 (2014).

Bekos, M.A., van Dijk, T.C., Kindermann, P., Wolff, A.: Simultaneous Drawing of Planar Graphs with RightAngle Crossings and Few Bends. In: Duncan, C. and Symvonis, A. (eds.) Proc. 22nd Int. Sympos. Graph Drawing (GD'14). p. 515516. SpringerVerlag (2014).

Schwartges, N., Haunert, J.H., Wolff, A., Zwiebler, D.: Point Labeling with Sliding Labels in Interactive Maps. In: Huerta, J., Schade, S., and Granell, C. (eds.) Proc. 17th AGILE Conf. Geogr. Inform. Sci. (AGILE'14). p. 295310. SpringerVerlag (2014).[ BibTeX ]

Barth, L., Fabrikant, S.I., Kobourov, S., Lubiw, A., Nöllenburg, M., Okamoto, Y., Pupyrev, S., Squarcella, C., Ueckerdt, T., Wolff, A.: Semantic Word Cloud Representations: Hardness and Approximation Algorithms. In: Pardo, A. and Viola, A. (eds.) Proc. 11th Latin American Sympos. Theor. Inform. (LATIN'14). p. 514525. SpringerVerlag (2014).

Fink, M., Lechner, M., Wolff, A.: Concentric Metro Maps. Proc. Schematic Mapping Workshop (SMW'14). , Wivenhoe Park (2014).

Kindermann, P., Lipp, F., Wolff, A.: Luatodonotes: Boundary Labeling for Annotations in Texts. In: Duncan, C. and Symvonis, A. (eds.) Proc. 22nd Int. Sympos. Graph Drawing (GD'14). p. 7688. SpringerVerlag (2014).[ BibTeX ]

Schwartges, N., Allerkamp, D., Haunert, J.H., Wolff, A.: Optimizing Active Ranges for Point Selection in Dynamic Maps. Proc. 16th ICA Generalisation Workshop (ICAGW'13). , Dresden (2013).

Fink, M., Haunert, J.H., Spoerhase, J., Wolff, A.: Selecting the Aspect Ratio of a Scatter Plot Based on Its Delaunay Triangulation. In: Fekete, S. (ed.) Proc. 29th Europ. Workshop Comput. Geom. (EuroCG'13). p. 119122. , Braunschweig (2013).

Kindermann, P., Niedermann, B., Rutter, I., Schaefer, M., Schulz, A., Wolff, A.: TwoSided Boundary Labeling with Adjacent Sides. In: Dehne, F., SolisOba, R., and Sack, J.R. (eds.) Proc. 13th Int. Algorithms Data Struct. Symp. (WADS'13). p. 463474. SpringerVerlag (2013).

Kindermann, P., Niedermann, B., Rutter, I., Schaefer, M., Schulz, A., Wolff, A.: TwoSided Boundary Labeling with Adjacent Sides. In: Fekete, S. (ed.) Proc. 29th Europ. Workshop Comput. Geom. (EuroCG'13). p. 233236. , Braunschweig (2013).

Das, A., Fleszar, K., Kobourov, S.G., Spoerhase, J., Veeramoni, S., Wolff, A.: Approximating the Generalized Minimum Manhattan Network Problem. In: Cai, L., Cheng, S.W., and Lam, T.W. (eds.) Proc. 24th Annu. Int. Symp. Algorithms Comput. (ISAAC'13). p. 722732. SpringerVerlag (2013).

Peng, D., Haunert, J.H., Wolff, A.: Morphing Polylines Based on Least Squares Adjustment. Proc. 16th ICA Generalisation Workshop (ICAGW'13). , Dresden (2013).

Fink, M., Haverkort, H., Nöllenburg, M., Roberts, M., Schuhmann, J., Wolff, A.: Drawing Metro Maps using Bézier Curves. In: Didimo, W. and Patrignani, M. (eds.) Proc. 20th Int. Sympos. Graph Drawing (GD'12). p. 463474. SpringerVerlag (2013).

Bruckdorfer, T., Cornelsen, S., Gutwenger, C., Kaufmann, M., Montecchiani, F., Nöllenburg, M., Wolff, A.: Progress on Partial Edge Drawings. In: Didimo, W. and Patrignani, M. (eds.) Proc. 20th Int. Sympos. Graph Drawing (GD'12). p. 6778. SpringerVerlag (2013).

Angelini, P., Eppstein, D., Fabrizio Frati, M.K., Lazard, S., Tamara Mchedlidze, M.T., Wolff, A.: Universal Point Sets for Planar Graph Drawings with Circular Arcs. Proc. 25th Canadian Conf. Comput. Geom. (CCCG'13). p. 117122. , Waterloo, ON, Canada (2013).

Das, A., Fleszar, K., Kobourov, S.G., Spoerhase, J., Veeramoni, S., Wolff, A.: Polylogarithmic Approximation for Generalized Minimum Manhattan Networks. In: Fekete, S. (ed.) Proc. 29th Europ. Workshop Comput. Geom. (EuroCG'13). p. 8184. , Braunschweig (2013).

Schwartges, N., Spoerhase, J., Wolff, A.: Approximation Algorithms for the Maximum Leaf Spanning Tree Problem on Acyclic Digraphs. In: SolisOba, R. and Persiano, G. (eds.) Proc. 9th Workshop Approx. Online Algorithms (WAOA'11). p. 7788. SpringerVerlag, Saarbr{ü}cken (2012).

Fink, M., Haunert, J.H., Mchedlidze, T., Spoerhase, J., Wolff, A.: Drawing Graphs with Vertices at Specified Positions and Crossings at Large Angles. In: van Kreveld, M. and Speckmann, B. (eds.) Proc. 19th Int. Sympos. Graph Drawing (GD'11). p. 441442. SpringerVerlag (2012).

Fink, M., Haunert, J.H., Mchedlidze, T., Spoerhase, J., Wolff, A.: Drawing Graphs with Vertices at Specified Positions and Crossings at Large Angles. In: Rahman, M.S. and Nakano, S.ichi (eds.) Proc. Workshop Algorithms Comput. (WALCOM'12). p. 186197. SpringerVerlag (2012).

Das, A., Gansner, E.R., Kaufmann, M., Kobourov, S., Spoerhase, J., Wolff, A.: Approximating Minimum Manhattan Networks in Higher Dimensions. In: Demetrescu, C. and Halldórsson, M.M. (eds.) Proc. 19th Annu. Europ. Symp. on Algorithms (ESA'11). p. 4960. SpringerVerlag, Saarbr{ü}cken (2011).

de Berg, M., van Nijnatten, F., Sitters, R., Woeginger, G.J., Wolff, A.: The Traveling Salesman Problem Under Squared Euclidean Distances. In: Marion, J.Y. and Schwentick, T. (eds.) Proc. 27th Int. Sympos. Theoretical Aspects Comput. Sci. (STACS'10). p. 239250. , Nancy (2010).

de Berg, M., Gerrits, D., Khosravi, A., Rutter, I., Tsirogiannis, C., Wolff, A.: How Alexander the Great Brought the Greeks Together While Inflicting Minimal Damage to the Barbarians. Proc. 26th European Workshop Comput. Geom. (EuroCG'10). p. 7376. , Dortmund (2010).

Haunert, J.H., Wolff, A.: Optimal and Topologically Safe Simplification of Building Footprints. Proc. 18th Int. ACM Symp. Advances Geogr. Inform. Syst. (ACMGIS'10). p. 192201. , San Jose, CA (2010).

Katz, B., Krug, M., Rutter, I., Wolff, A.: ManhattanGeodesic Embedding of Planar Graphs. In: Eppstein, D. and Gansner, E.R. (eds.) Proc. 17th Int. Sympos. Graph Drawing (GD'09). p. 207218. SpringerVerlag (2010).

Nöllenburg, M., Völker, M., Wolff, A., Holten, D.: Drawing Binary Tanglegrams: An Experimental Evaluation. Proc. 11th Workshop Algorithm Engineering and Experiments (ALENEX'09). p. 106119 (2009).

Keiren, J., van Walderveen, F., Wolff, A.: Constructability of Triplets. In: Langerman, S. (ed.) Proc. 25th European Workshop on Computational Geometry (EuroCG'09). , Brussels (2009).

Buchin, K., Buchin, M., Byrka, J., Nöllenburg, M., Okamoto, Y., Silveira, R.I., Wolff, A.: Drawing (Complete) Binary Tanglegrams: Hardness, Approximation, FixedParameter Tractability. In: Tollis, I.G. and Patrignani, M. (eds.) Proc. 16th Int. Sympos. Graph Drawing (GD'08). p. 324335. SpringerVerlag, Hersonissos, Crete (2009).

Rutter, I., Wolff, A.: Augmenting the Connectivity of Planar and Geometric Graphs. In: Petitjean, S. (ed.) Proc. 24th European Workshop on Computational Geometry (EuroCG'08). p. 7174. , Nancy (2008).

Rutter, I., Wolff, A.: Computing Large Matchings Fast. Proc. 19th ACMSIAM Sympos. Discrete Algorithms (SODA'08). p. 183192. , San Francisco (2008).

Spillner, A., Wolff, A.: Untangling a Planar Graph. In: Geffert, V., Karhumäki, J., Bertoni, A., Preneel, B., Návrat, P., and Bieliková, M. (eds.) Proc. 34th Int. Conf. Current Trends Theory & Practice Comput. Sci. (SOFSEM'08). p. 473484. SpringerVerlag, Nov{{\'y}} Smokovec, Slovakia (2008).

Haunert, J.H., Wolff, A.: Optimal Simplification of Building Ground Plans. Proc. 21st Congress Int. Society Photogrammetry Remote Sensing (ISPRS'08), Technical Commision II/3. p. 373378. , Beijing (2008).

Rutter, I., Wolff, A.: Augmenting the Connectivity of Planar and Geometric Graphs. Proc. Int. Conf. Topological Geom. Graph Theory (TGGT'08). p. 5356. , Paris (2008).

Atienza, N., de Castro, N., Cortés, C., Garrido, M.Á., Grima, C.I., Hernández, G., Márquez, A., Moreno, A., Nöllenburg, M., Portillo, J.R., Reyes, P., Valenzuela, J., Villar, M.T., Wolff, A.: Cover Contact Graphs. In: Hong, S.H., Nishizeki, T., and Quan, W. (eds.) Proc. 15th Int. Sympos. Graph Drawing (GD'07). p. 171182. SpringerVerlag, Sydney (2008).

Erlebach, T., Hagerup, T., Jansen, K., Minzlaff, M., Wolff, A.: Trimming of Graphs, with Application to Point Labeling. In: Albers, S. and Weil, P. (eds.) Proc. 25th Int. Sympos. Theoretical Aspects Comput. Sci. (STACS'08). p. 265276. , Bordeaux (2008).

Been, K., Nöllenburg, M., Poon, S.H., Wolff, A.: Optimizing Active Ranges for Consistent Dynamic Map Labeling. In: Petitjean, S. (ed.) Proc. 24th European Workshop on Computational Geometry (EuroCG'08). p. 5558. , Nancy (2008).

Goaoc, X., Kratochvíl, J., Okamoto, Y., Shin, C.S., Wolff, A.: Moving Vertices to Make Drawings Plane. In: Hong, S.H., Nishizeki, T., and Quan, W. (eds.) Proc. 15th Int. Sympos. Graph Drawing (GD'07). p. 101112. SpringerVerlag, Sydney (2008).

Been, K., Nöllenburg, M., Poon, S.H., Wolff, A.: Optimizing Active Ranges for Consistent Dynamic Map Labeling. Proc. 24th Annu. ACM Sympos. Comput. Geom. (SoCG'08). p. 1019. , College Park, MD (2008).

Benkert, M., Nöllenburg, M., Uno, T., Wolff, A.: Minimizing IntraEdge Crossings in Wiring Diagrams and Public Transport Maps. In: Kaufmann, M. and Wagner, D. (eds.) Proc. 14th Int. Sympos. Graph Drawing (GD'06). p. 270281. SpringerVerlag, Karlsruhe, Germany (2007).

Merrick, D., Nöllenburg, M., Wolff, A., Benkert, M.: Morphing Polygonal Lines: A Step Towards Continuous Generalization. In: Aichholzer, O. and Hackl, T. (eds.) Proc. 23rd European Workshop on Computational Geometry (EWCG'07). p. 69. , Graz (2007).

Bereg, S., Völker, M., Wolff, A., Zhang, Y.: Straightening Drawings of Clustered Hierarchical Graphs. In: van Leeuwen, J., Italiano, G.F., van der Hoek, W., Meinel, C., Sack, H., and Plasil, F. (eds.) Proc. 33rd Int. Conf. Current Trends Theory & Practice Comput. Sci. (SOFSEM'07). p. 177186. SpringerVerlag, Harrachov, Czech Republic (2007).

Merrick, D., Nöllenburg, M., Wolff, A., Benkert, M.: Morphing Polygonal Lines: A Step Towards Continuous Generalization. Proc. 15th Annu. Geograph. Inform. Sci. Research Conf. UK (GISRUK'07). p. 390399. , Maynooth, Ireland (2007).

Ahn, H.K., Alt, H., Asano, T., Bae, S.W., Brass, P., Cheong, O., Knauer, C., Na, H.S., Shin, C.S., Wolff, A.: Constructing Optimal Highways. In: Jay, B. and Gudmundsson, J. (eds.) Proc. 13th Conf. Computing: The Australasian Theory Sympos. (CATS'07). p. 714. Australian Computer Society, Ballarat, Australia (2007).

Erlebach, T., Hagerup, T., Jansen, K., Minzlaff, M., Wolff, A.: A New Approximation Algorithm for Labeling Weighted Points with Sliding Labels. Proc. 22nd European Workshop on Computational Geometry (EWCG'06). p. 137140. , Delphi (2006).

Haunert, J.H., Wolff, A.: Generalization of Land Cover Maps by Mixed Integer Programming. Proc. 14th Int. ACM Symp. Advances Geogr. Inform. Syst. (ACMGIS'06). p. 7582. , Arlington, VA (2006).

Gerdjikov, S., Wolff, A.: PseudoConvex Decomposition of Simple Polygons. Proc. 22nd European Workshop on Computational Geometry (EWCG'06). p. 1316. , Delphi (2006).

Nöllenburg, M., Wolff, A.: A MixedInteger Program for Drawing HighQuality Metro Maps. In: Healy, P. and Nikolov, N.S. (eds.) Proc. 13th Int. Sympos. Graph Drawing (GD'05). p. 321333. SpringerVerlag, Limerick, Ireland (2006).

Benkert, M., Gudmundsson, J., Knauer, C., Moet, E., van Oostrum, R., Wolff, A.: A PolynomialTime Approximation Algorithm for a Geometric Dispersion Problem. Proc. 22nd European Workshop on Computational Geometry (EWCG'06). p. 141144. , Delphi (2006).

Benkert, M., Gudmundsson, J., Haverkort, H., Wolff, A.: Constructing InterferenceMinimal Networks. In: Wiedermann, J. r'i, Stuller, J., Tel, G., Pokorn'y, J., and Bieliková, M. (eds.) Proc. 32nd Int. Conf. Current Trends Theory & Practice Comput. Sci. (SOFSEM'06). p. 166175. SpringerVerlag, Merin, Czech Republic (2006).

Bereg, S., Mutsanas, N., Wolff, A.: Matching Points with Rectangles and Squares. In: Wiedermann, J. r'i, Stuller, J., Tel, G., Pokorn'y, J., and Bieliková, M. (eds.) Proc. 32nd Int. Conf. Current Trends Theory & Practice Comput. Sci. (SOFSEM'06). p. 177186. SpringerVerlag, Merin, Czech Republic (2006).

Rüetschi, U.J., Caduff, D., Timpf, S., Schulz, F., Wolff, A.: Routing by Landmarks. Proc. 6th Swiss Transport Research Conf. (STRC'06). , Ascona (2006).

Halldórsson, M.M., Wolff, A., Tokuyama, T.: Improved FixedParameter Algorithms for NonCrossing Subgraphs. Proc. ICALP Affiliated Workshop on Improving ExponentialTime Algorithms (iETA'06). p. 3138. , Venezia (2006).

Benkert, M., Gudmundsson, J., Knauer, C., Moet, E., van Oostrum, R., Wolff, A.: A PolynomialTime Approximation Algorithm for a Geometric Dispersion Problem. In: Chen, D.Z. and Lee, D.T. (eds.) Proc. 12th Annu. Int. Comput. Combinatorics Conf. (COCOON'06). p. 166175. SpringerVerlag, Taipei (2006).

Benkert, M., Gudmundsson, J., Haverkort, H., Wolff, A.: Constructing InterferenceMinimal Networks. Proc. 21st European Workshop on Computational Geometry (EWCG'05). p. 203206. , Eindhoven (2005).

Reinbacher, I., Benkert, M., van Kreveld, M., Mitchell, J.S.B., Wolff, A.: Delineating Boundaries for Imprecise Regions. In: Brodal, G.S. and Leonardi, S. (eds.) Proc. 13th Annu. Europ. Symp. on Algorithms (ESA'05). p. 143154. SpringerVerlag, Eivissa, Spain (2005).

Görke, R., Wolff, A.: Constructing the City Voronoi Diagram Faster. Proc. 2nd Int. Symp. on Voronoi Diagrams in Science and Engineering (VD'05). p. 162172. , Seoul (2005).

Benkert, M., Widmann, F., Wolff, A.: The Minimum Manhattan Network Problem: A Fast Factor3 Approximation. In: Akiyama, J., Kano, M., and Tan, X. (eds.) Proc. 8th Japanese Conf. on Discrete and Computational Geometry (JCDCG'04). p. 1628. SpringerVerlag, Tokyo (2005).

Daescu, O., Mi, N., Shin, C.S., Wolff, A.: FarthestPoint Queries with Geometric and Combinatorial Constraints. In: Akiyama, J., Kano, M., and Tan, X. (eds.) Proc. 8th Japanese Conf. on Discrete and Computational Geometry (JCDCG'04). p. 6275. SpringerVerlag, Tokyo (2005).

Bekos, M.A., Kaufmann, M., Symvonis, A., Wolff, A.: Boundary Labeling: Models and Efficient Algorithms for Rectangular Maps. In: Pach, J. (ed.) Proc. 12th Int. Sympos. Graph Drawing (GD'04). p. 4959. SpringerVerlag, New York (2005).

Knauer, C., Schramm, É., Spillner, A., Wolff, A.: Spanning Trees with Few Crossings in Geometric and Topological Graphs. Proc. 21st European Workshop on Computational Geometry (EWCG'05). p. 195198. , Eindhoven (2005).

Görke, R., Wolff, A.: Constructing the City Voronoi Diagram Faster. Proc. 21st European Workshop on Computational Geometry (EWCG'05). p. 155158. , Eindhoven (2005).

Reinbacher, I., Benkert, M., van Kreveld, M., Wolff, A.: Delineating Boundaries for Imprecise Regions. Proc. 21st European Workshop on Computational Geometry (EWCG'05). p. 127130. , Eindhoven (2005).

Knauer, C., Schramm, É., Spillner, A., Wolff, A.: Configurations with Few Crossings in Topological Graphs. In: Deng, X. and Du, D.Z. (eds.) Proc. 16th Annu. Int. Symp. Algorithms Comput. (ISAAC'05). p. 604613. SpringerVerlag, Sanya, Hainan, China (2005).

Daescu, O., Mi, N., Shin, C.S., Wolff, A.: FarthestPoint Queries with Geometric and Combinatorial Constraints. Abstracts 8th Japanese Conf. on Discrete and Computational Geometry (JCDCG'04). p. 110111. , Tokyo (2004).

Wolff, A., Benkert, M., Shirabe, T.: The Minimum Manhattan Network Problem: Approximations and Exact Solutions. Proc. 20th European Workshop on Computational Geometry (EWCG'04). p. 209212. , Sevilla (2004).

Benkert, M., Widmann, F., Wolff, A.: The Minimum Manhattan Network Problem: A Fast Factor3 Approximation. Abstracts 8th Japanese Conf. on Discrete and Computational Geometry (JCDCG'04). p. 8586. , Tokyo (2004).

Asano, T., de Berg, M., Cheong, O., Everett, H., Haverkort, H., Katoh, N., Wolff, A.: Optimal Spanners for AxisAligned Rectangles. Proc. 20th European Workshop on Computational Geometry (EWCG'04). p. 97100. , Sevilla (2004).

Arampatzis, A., van Kreveld, M., Reinbacher, I., Jones, C.B., Vaid, S., Clough, P., Joho, H., Sanderson, M., Benkert, M., Wolff, A.: WebBased Delineation of Imprecise Regions. Proc. Workshop on Geographic Information Retrieval at SIGIR'04. , Sheffield (2004).

Daescu, O., Mi, N., Shin, C.S., Wolff, A.: FarthestPoint Queries with Geometric and Combinatorial Constraints. Proc. 20th European Workshop on Computational Geometry (EWCG'04). p. 4548. , Sevilla (2004).

van Kreveld, M., Schramm, É., Wolff, A.: Algorithms for the Placement of Diagrams on Maps. In: Pfoder, D., Cruz, I.F., and Ronthaler, M. (eds.) Proc. 12th Int. ACM Symp. Advances Geogr. Inform. Syst. (ACMGIS'04). p. 222231. , Washington D.C. (2004).

Gudmundsson, J., Haverkort, H., Park, S.M., Shin, C.S., Wolff, A.: Facility Location and the Geometric MinimumDiameter Spanning Tree. In: Jansen, K., Leonardi, S., and Vazirani, V. (eds.) Proc. 5th Int. Workshop Approx. Algorithms Combin. Optim. (APPROX'02). p. 146160. SpringerVerlag, Roma (2002).

Gudmundsson, J., Haverkort, H., Park, S.M., Shin, C.S., Wolff, A.: Approximating the Geometric MinimumDiameter Spanning Tree. Proc. 18th European Workshop on Computational Geometry (EWCG'02). p. 4145. , Warszawa (2002).

Poon, S.H., Shin, C.S., Strijk, T., Wolff, A.: Labeling Points with Weights. Proc. 17th European Workshop on Computational Geometry (EWCG'01). p. 97100. , Berlin (2001).

Poon, S.H., Shin, C.S., Strijk, T., Wolff, A.: Labeling Points with Weights. In: Eades, P. and Takaoka, T. (eds.) Proc. 12th Annu. Int. Symp. Algorithms Comput. (ISAAC'01). p. 610622. SpringerVerlag, Christchurch (2001).

Garrido, M.Á., Iturriaga, C., Márquez, A., Portillo, J.R., Reyes, P., Wolff, A.: Labeling Subway Lines. In: Eades, P. and Takaoka, T. (eds.) Proc. 12th Annu. Int. Symp. Algorithms Comput. (ISAAC'01). p. 649659. SpringerVerlag, Christchurch (2001).

Garrido, M.Á., Márquez, A., Iturriaga, C., Portillo, J.R., Reyes, P., Wolff, A.: Etiquetado de puntos alineados. Proc. IX Encuentros de Geometría Computacional (EGC'01). p. 285294. , Girona (2001).[ BibTeX ]

Thon, M., Wolff, A., Xu, Y.: Ein neuer Algorithmus zur Beschriftung von Punkten mit je zwei Kreisen. In: Gesellschaft für Informatik e.V., (ed.) Tagungsband der Informatiktage. , Bad Schussenried (2000).[ BibTeX ]

Qin, Z., Wolff, A., Xu, Y., Zhu, B.: New Algorithms for TwoLabel Point Labeling. In: Paterson, M. (ed.) Proc. 8th Annu. Europ. Symp. on Algorithms (ESA'00). p. 368379. SpringerVerlag, Saarbr{ü}cken (2000).

Wolff, A., Thon, M., Xu, Y.: A Better Lower Bound for TwoCircle Point Labeling. In: Lee, D.T. and Teng, S.H. (eds.) Proc. 11th Annu. Int. Symp. Algorithms Comput. (ISAAC'00). p. 422431. SpringerVerlag, Taipei (2000).

Wagner, F., Wolff, A.: A Combinatorial Framework for Map Labeling. In: Whitesides, S.H. (ed.) Proc. 6th Int. Sympos. Graph Drawing (GD'98). p. 316331. SpringerVerlag, Montr{é}al (1999).

Agarwal, P.K., Knipping, L., van Kreveld, M., Strijk, T., Wolff, A.: A Simple and Efficient Algorithm for HighQuality Line Labeling. Proc. 15th European Workshop on Computational Geometry (EWCG'99). p. 9396. , SophiaAntipolis (1999).[ BibTeX ]

van Dijk, S., van Kreveld, M., Strijk, T., Wolff, A.: Towards an Evaluation of Quality for Label Placement Methods. Proc. 19th Int. Cartographic Conf. (ICA'99). p. 905913. Int. Cartographic Association, Ottawa (1999).

Wolff, A., Knipping, L., van Kreveld, M., Strijk, T., Agarwal, P.K.: A Simple and Efficient Algorithm for HighQuality Line Labeling. In: Martin, D. and Wu, F. (eds.) Proc. 7th Annu. Geograph. Inform. Sci. Research Conf. UK (GISRUK'99). p. 146150. , Southampton (1999).[ BibTeX ]

van Kreveld, M., Strijk, T., Wolff, A.: Point Set Labeling with Sliding Labels. Proc. 14th Annu. ACM Sympos. Comput. Geom. (SoCG'98). p. 337346. , Minneapolis (1998).

Schönherr, S., Wolff, A.: MakeIt!  Generating and Maintaining Makefiles Automatically. In: Battini, R. and Bertossi, A.A. (eds.) Proc. Workshop on Algorithms and Experiments (ALEX'98). p. 165174. , Trento (1998).

Wagner, F., Wolff, A.: Fast and Reliable Map Labeling. In: und Werner Pillmann, H.K. (ed.) Proc. 9th Int. Symp. Computer Science for Environment Protection (CSEP'95). p. 667675. Metropolis, Berlin (1995).[ BibTeX ]

Wagner, F., Wolff, A.: Map Labeling Heuristics: Provably Good and Practically Useful. Proc. 11th Annu. ACM Sympos. Comput. Geom. (SoCG'95). p. 109118. , Vancouver (1995).

Wagner, F., Wolff, A.: An Efficient and Effective Approximation Algorithm for the Map Labeling Problem. In: Spirakis, P. (ed.) Proc. 3rd Annu. Europ. Symp. on Algorithms (ESA'95). p. 420433. SpringerVerlag, Corfu (1995).
PhD or Master Thesis [ to top ]

Wolff, A.: Automated Label Placement in Theory and Practice, (1999).

Wolff, A.: Map Labeling, (1995).[ BibTeX ]
Miscellaneous [ to top ]

Bereg, S., Völker, M., Wolff, A.: Compact Drawing of Clustered Layered Graphs, (2006).

Wolff, A.: Geometrische Netzwerke und ihre Visualisierung, (2005).

van Kreveld, M., Neyer, G., Schirra, S., Rickenbach, R., Wagner, F., Widmayer, P., Wolff, A.: Geographic Information Systems, (1997).[ BibTeX ]

Wolff, A., Strijk, T.: The MapLabeling Bibliography, http://i11www.ira.uka.de/maplabeling/bibliography/, (1996).[ BibTeX ]