723 search results - page 18 / 145 » On the hyperbolicity constant in graphs |
SIAMDM
2010
13 years 2 months ago
2010
Abstract. Squaregraphs were originally defined as finite plane graphs in which all inner faces are quadrilaterals (i.e., 4-cycles) and all inner vertices (i.e., the vertices not in...
PAMI
2006
13 years 7 months ago
2006
Spectral graph partitioning provides a powerful approach to image segmentation. We introduce an alternate idea that finds partitions with a small isoperimetric constant, requiring ...
COMGEO
2012
ACM
12 years 3 months ago
2012
ACM
Let G be an unweighted graph of complexity n embedded in a surface of genus g, orientable or not. We describe improved algorithms to compute a shortest non-contractible and a shor...
ESA
2008
Springer
13 years 9 months ago
2008
Springer
Abstract. We consider the problem of encoding a graph with n vertices and m edges compactly supporting adjacency, neighborhood and degree queries in constant time in the log n-bit ...
DAM
2007
13 years 7 months ago
2007
We show that every function f implemented as a lookup table can be implemented such that the computational complexity of evaluating f m(x) is small, independently of m and x. The ...