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25th international symposium on graph drawing and network visualization, gd 2017

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25th international symposium on graph drawing and network visualization, gd 2017

ISBN: (纸本)9783319739144

the proceedings contain 44 papers. the special focus in this conference is on graph drawing and network visualization. the topics include: Arrangements of pseudocircles: Triangles and drawings;drawing bobbin lace graphs, or, fundamental cycles for a subclass of periodic graphs;many touchings force many crossings;thrackles: An improved upper bound;on smooth orthogonal and octilinear drawings: Relations, complexity and Kandinsky drawings;EPG-representations with small Grid-Size;mixed linear layouts of planar graphs;upward partitioned book embeddings;experimental evaluation of book drawing algorithms;on the edge-length ratio of outerplanar graphs;visual similarity perception of directed acyclic graphs: A study on influencing factors;giViP: A visual profiler for distributed graph processing systems;drawing big graphs using spectral sparsification;revisited experimental comparison of node-link and matrix representations;improved bounds for drawing trees on fixed points with L-Shaped edges;on upward drawings of trees on a given grid;simple compact monotone tree drawings;visualizing Co-phylogenetic reconciliations;anisotropic radial layout for visualizing centrality and structure in graphs;computing storyline visualizations with few block crossings;on vertex- and empty-ply proximity drawings;MLSEB: Edge bundling using moving least squares approximation;drawing dynamic graphs without timeslices;colored point-set embeddings of acyclic graphs;planar drawings of fixed-mobile bigraphs;ordered level planarity, geodesic planarity and Bi-Monotonicity;non-crossing paths with geographic constraints;planar L-drawings of directed graphs;nodeTrix planarity testing with small clusters;the painter’s problem: Covering a grid with colored connected polygons;triangle-free penny graphs: Degeneracy, Choosability, and edge count;1-fan-bundle-planar drawings of graphs;gap-planar graphs;beyond outerplanarity.

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graph drawing Contest Report 25th

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26th international symposium on graph drawing and network visualization (gd)

作者： Devanny, William Kindermann, Philipp Loffler, Maarten Rutter, Ignaz Univ Calif Irvine Irvine CA USA Univ Wurzburg Wurzburg Germany Univ Utrecht Utrecht Netherlands Univ Passau Passau Germany

this report describes the 25th Annual graph drawing Contest, held in conjunction with the 26th international symposium on graph drawing and network visualization (gd'18) in Barcelona, Spain. the mission of the Gra... 详细信息

ISBN: (纸本)9783030044145;9783030044138

关键词： visualization

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drawing big graphs using spectral sparsification 25th

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25th international symposium on graph drawing and network visualization, gd 2017

作者： Eades, Peter Nguyen, Quan Hong, Seok-Hee The School of Information Technologies University of Sydney Sydney Australia

ISBN: (纸本)9783319739144

Spectral sparsification is a general technique developed by Spielman et al. to reduce the number of edges in a graph while retaining its structural properties. We investigate the use of spectral sparsification to produce good visual representations of big graphs. We evaluate spectral sparsification approaches on real-world and synthetic graphs. We show that spectral sparsifiers are more effective than random edge sampling. Our results lead to guidelines for using spectral sparsification in big graph visualization. © Springer international Publishing AG 2018.

关键词： drawing (graphics)

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On the edge-length ratio of outerplanar graphs 25th

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25th international symposium on graph drawing and network visualization, gd 2017

作者： Lazard, Sylvain Lenhart, William Liotta, Giuseppe Inria CNRS University of Lorraine Nancy France Williams College Williamstown United States University of Perugia Perugia Italy

ISBN: (纸本)9783319739144

We show that any outerplanar graph admits a planar straight-line drawing such that the length ratio of the longest to the shortest edges is strictly less than 2. this result is tight in the sense that for any Ε > 0 there are outerplanar graphs that cannot be drawn with an edge-length ratio smaller than 2 - Ε We also show that every bipartite outerplanar graph has a planar straight-line drawing with edge-length ratio 1, and that, for any k ≥ 1 there exists an outerplanar graph with a given combinatorial embedding such that any planar straight-line drawing has edge-length ratio greater than k. © Springer international Publishing AG 2018.

关键词： drawing (graphics)

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Experimental evaluation of book drawing algorithms 25th

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25th international symposium on graph drawing and network visualization, gd 2017

作者： Klawitter, Jonathan McHedlidze, Tamara Nöllenburg, Martin University of Auckland Auckland New Zealand Karlsruhe Institute of Technology Karlsruhe Germany TU Wien Vienna Austria

ISBN: (纸本)9783319739144

A k-page book drawing of a graph G = (V,E) consists of a linear ordering of its vertices along a spine and an assignment of each edge to one of the k pages, which are half-planes bounded by the spine. In a book drawing, two edges cross if and only if they are assigned to the same page and their vertices alternate along the spine. Crossing minimization in a k-page book drawing is NP-hard, yet book drawings have multiple applications in visualization and beyond. therefore several heuristic book drawing algorithms exist, but there is no broader comparative study on their relative performance. In this paper, we propose a comprehensive benchmark set of challenging graph classes for book drawing algorithms and provide an extensive experimental study of the performance of existing book drawing algorithms. © Springer international Publishing AG 2018.

关键词： Heuristic algorithms

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drawing dynamic graphs without timeslices 25th

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25th international symposium on graph drawing and network visualization, gd 2017

作者： Simonetto, Paolo Archambault, Daniel Kobourov, Stephen Swansea University Swansea United Kingdom University of Arizona Tucson United States

ISBN: (纸本)9783319739144

Timeslices are often used to draw and visualize dynamic graphs. While timeslices are a natural way to think about dynamic graphs, they are routinely imposed on continuous data. Often, it is unclear how many timeslices to select: too few timeslices can miss temporal features such as causality or even graph structure while too many timeslices slows the drawing computation. We present a model for dynamic graphs which is not based on timeslices, and a dynamic graph drawing algorithm, DynNoSlice, to draw graphs in this model. In our evaluation, we demonstrate the advantages of this approach over timeslicing on continuous data sets. © Springer international Publishing AG 2018.

关键词： drawing (graphics)

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Mixed linear layouts of planar graphs 25th

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25th international symposium on graph drawing and network visualization, gd 2017

作者： Pupyrev, Sergey University of Arizona TucsonAZ United States

ISBN: (纸本)9783319739144

A k-stack (respectively, k-queue) layout of a graph consists of a total order of the vertices, and a partition of the edges into k sets of non-crossing (non-nested) edges with respect to the vertex ordering. In 1992, Heath and Rosenberg conjectured that every planar graph admits a mixed 1-stack 1-queue layout in which every edge is assigned to a stack or to a queue that use a common vertex ordering. We disprove this conjecture by providing a planar graph that does not have such a mixed layout. In addition, we study mixed layouts of graph subdivisions, and show that every planar graph has a mixed subdivision with one division vertex per edge. © Springer international Publishing AG 2018.

关键词： graph theory

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graph drawing and network visualization 1

引用

丛书名： Lecture Notes in Computer Science

1000年

作者： Fabrizio Frati Kwan-Liu Ma

ISBN: (数字)9783319739151

ISBN: (纸本)9783319739144

this book constitutes revised selected papers from the 25th international symposium on graph drawing and network visualization, gd 2017, held in Boston, MA, USA, in September 2017.;the 34 full and 9 short papers presented in this volume were carefully reviewed and selected from 87 submissions. Also included in this book are 2 abstracts of keynote presentations, 16 poster abstracts, and 1 contest report. the papers are organized in topical sections named: straight-line representations; obstacles and visibility; topological graph theory; orthogonal representations and book embeddings; evaluations; tree drawings; graph layout designs; point-set embeddings; special representations; and beyond planarity.

关键词： Algorithm Analysis and Problem Complexity Discrete Mathematics in Computer Science Computer graphics Data Structures Software Engineering Computer Appl. in Social and Behavioral Sciences

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A Greedy Heuristic for Crossing-Angle Maximization 26th

A Greedy Heuristic for Crossing-Angle Maximization

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26th international symposium on graph drawing and network visualization (gd)

作者： Demel, Almut Durrschnabel, Dominik Mchedlidze, Tamara Radermacher, Marcel Wulf, Lasse Karlsruhe Inst Technol Dept Comp Sci Karlsruhe Germany

ISBN: (纸本)9783030044145;9783030044138

the crossing angle of a straight-line drawing Gamma of a graph G = (V, E) is the smallest angle between two crossing edges in Gamma. Deciding whether a graph G has a straight-line drawing with a crossing angle of 90 is NP-hard [I]. We propose a simple heuristic to compute a drawing with a large crossing angle. the heuristic greedily selects the best position for a single vertex in a random set of points. the algorithm is accompanied by a speed-up technique to compute the crossing angle of a straight-line drawing. We show the effectiveness of the heuristic in an extensive empirical evaluation. Our heuristic was clearly the winning algorithm (CoffeeVM) in the graph drawing Challenge 2017 [6].

关键词： drawing (graphics)

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Re-embedding a 1-Plane graph into a Straight-Line drawing in Linear Time 24th

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24th international symposium on graph drawing and network visualization (gd)

作者： Hong, Seok-Hee Nagamochi, Hiroshi Univ Sydney Sydney NSW Australia Kyoto Univ Kyoto Japan

ISBN: (纸本)9783319501062;9783319501055

thomassen characterized some 1-plane embedding as the forbidden configuration such that a given 1-plane embedding of a graph is drawable in straight-lines if and only if it does not contain the configuration [C. thomassen, Rectilinear drawings of graphs, J. graph theory, 10(3), 335-341, 1988]. In this paper, we characterize some 1-plane embedding as the forbidden configuration such that a given 1-plane embedding of a graph can be re-embedded into a straight-line drawable 1-plane embedding of the same graph if and only if it does not contain the configuration. Reembedding of a 1-plane embedding preserves the same set of pairs of crossing edges. We give a linear-time algorithm for finding a straight-line drawable 1-plane re-embedding or the forbidden configuration.

关键词： Clustering algorithms

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