Publications associées à On the inapproximability of independent domination in 2P3-free perfect graphs

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Free-Shape Polygonal Object Localization

Pascal Fua, Christos Marios Christoudias, Xiaolu Sun

Polygonal objects are prevalent in man-made scenes. Early approaches to detecting them relied mainly on geometry while subsequent ones also incorporated appearance-based cues. It has recently been shown that this could be done fast by searching for cycles ...

Springer-Verlag Berlin2014

Homometric sets in trees

Radoslav Fulek, Slobodan Mitrovic

Let G = (V, E) denote a simple graph with vertex set V and edge set E. The profile of a vertex set V' subset of V denotes the multiset of pairwise distances between the vertices of V'. Two disjoint subsets of V are homometric if their profiles are the same ...

Academic Press Ltd- Elsevier Science Ltd2014

Triangle-free intersection graphs of line segments with large chromatic number

Bartosz Maria Walczak, Michal Lason

In the 1970s Erdos asked whether the chromatic number of intersection graphs of line segments in the plane is bounded by a function of their clique number. We show the answer is no. Specifically, for each positive integer k we construct a triangle-free fam ...

Academic Press Inc Elsevier Science2014

Applications of a New Separator Theorem for String Graphs

János Pach

An intersection graph of curves in the plane is called a string graph. Matousek almost completely settled a conjecture of the authors by showing that every string graph with m edges admits a vertex separator of size O(root m log m). In the present note, th ...

Cambridge University Press2014

Outerplanar graph drawings with few slopes

Bartosz Maria Walczak

We consider straight-line outerplanar drawings of outerplanar graphs in which a small number of distinct edge slopes are used, that is, the segments representing edges are parallel to a small number of directions. We prove that Delta - 1 edge slopes suffic ...

Elsevier Science Bv2014

A Bayesian Method for Matching Two Similar Graphs without Seeds

Matthias Grossglauser, Pedram Pedarsani

Approximate graph matching (AGM) refers to the problem of mapping the vertices of two structurally similar graphs, which has applications in social networks, computer vision, chemistry, and biology. Given its computational cost, AGM has mostly been limited ...

2013

Inference of Mobility Patterns via Spectral Graph Wavelets

Pascal Frossard, Pierre Vandergheynst, Xiaowen Dong

Modern data processing tasks frequently involve structured data, for example signals defined on the vertex set of a weighted graph. In this paper, we address the problem of inference of mobility patterns from data defined on geographical graphs based on sp ...

2013

Constrained Binary Identification Problem

Amin Karbasi, Morteza Zadimoghaddam

We consider the problem of building a binary decision tree, to locate an object within a set by way of the least number of membership queries. This problem is equivalent to the “20 questions game” of information theory and is closely related to lossless so ...

2013

On the inapproximability of independent domination in 2P3-free perfect graphs

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Free-Shape Polygonal Object Localization

Homometric sets in trees

Triangle-free intersection graphs of line segments with large chromatic number

Applications of a New Separator Theorem for String Graphs

Outerplanar graph drawings with few slopes

THE NUMBER OF EDGES IN k-QUASI-PLANAR GRAPHS

A Bayesian Method for Matching Two Similar Graphs without Seeds

Inference of Mobility Patterns via Spectral Graph Wavelets

Constrained Binary Identification Problem

Coloring Triangle-Free Rectangular Frame Intersection Graphs with O(loglogn) Colors

Triangle-free intersection graphs of line segments with large chromatic number

Applications of a New Separator Theorem for String Graphs

Free-Shape Polygonal Object Localization

Outerplanar graph drawings with few slopes

THE NUMBER OF EDGES IN k-QUASI-PLANAR GRAPHS

A Bayesian Method for Matching Two Similar Graphs without Seeds

Inference of Mobility Patterns via Spectral Graph Wavelets

Constrained Binary Identification Problem

Homometric sets in trees

Coloring Triangle-Free Rectangular Frame Intersection Graphs with O(loglogn) Colors