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ESA
2004
Springer
137views Algorithms» more  ESA 2004»
15 years 12 months ago
Fast 3-Coloring Triangle-Free Planar Graphs
We show the first o(n2 ) algorithm for coloring vertices of trianglefree planar graphs using three colors. The time complexity of the algorithm is O(n log n). Our approach can be ...
Lukasz Kowalik
HUMAN
2003
Springer
15 years 11 months ago
A Graph-Based Approach to Compute Multiple Paths in Mobile Ad Hoc Networks
Multipath on-demand routing protocols for mobile ad hoc networks try to reduce control overhead and end-to-end delay by computing multiple paths with a single route discovery proce...
Gunyoung Koh, Duyoung Oh, Heekyoung Woo
TALG
2010
83views more  TALG 2010»
15 years 1 months ago
Finding shortest contractible and shortest separating cycles in embedded graphs
We give a polynomial-time algorithm to find a shortest contractible cycle (i.e. a closed walk without repeated vertices) in a graph embedded in a surface. This answers a question ...
Sergio Cabello
CORR
2011
Springer
169views Education» more  CORR 2011»
14 years 10 months ago
Percolation in the Secrecy Graph
— Secrecy graphs model the connectivity of wireless networks under secrecy constraints. Directed edges in the graph are present whenever a node can talk to another node securely ...
Amites Sarkar, Martin Haenggi
ICIP
2002
IEEE
16 years 8 months ago
Object contour tracking using graph cuts based active contours
In this paper, we present an object contour tracking approach using graph cuts based active contours (GCBAC). Our proposed algorithm does not need any a priori global shape model,...
Ning Xu, Narendra Ahuja