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ICALP
2007
Springer
15 years 3 months ago
Sharp Tractability Borderlines for Finding Connected Motifs in Vertex-Colored Graphs
We study the problem of finding occurrences of motifs in vertex-colored graphs, where a motif is a multiset of colors, and an occurrence of a motif is a subset of connected vertic...
Michael R. Fellows, Guillaume Fertin, Danny Hermel...
ALGORITHMICA
2010
115views more  ALGORITHMICA 2010»
14 years 9 months ago
Multi-Color Pebble Motion on Graphs
We consider a graph with n vertices, and p < n pebbles of m colors. A pebble move consists of transferring a pebble from its current host vertex to an adjacent unoccupied verte...
Gilad Goraly, Refael Hassin
ISM
2006
IEEE
104views Multimedia» more  ISM 2006»
15 years 3 months ago
A Novel Invisible Color Image Watermarking Scheme Using Image Adaptive Watermark Creation and Robust Insertion-Extraction
In this paper we present a robust and novel strategic invisible approach for insertion-extraction of a digital watermark, a color image, into color images. The novelty of our sche...
Saraju P. Mohanty, Parthasarathy Guturu, Elias Kou...
ISAAC
2005
Springer
110views Algorithms» more  ISAAC 2005»
15 years 3 months ago
Minimum Entropy Coloring
Abstract We study an information-theoretic variant of the graph coloring problem in which the objective function to minimize is the entropy of the coloring. The minimum entropy of ...
Jean Cardinal, Samuel Fiorini, Gwenaël Joret
APAL
1998
71views more  APAL 1998»
14 years 9 months ago
On the Finiteness of the Recursive Chromatic Number
A recursive graph is a graph whose vertex and edges sets are recursive. A highly recursive graph is a recursive graph that also has the following property: one can recursively det...
William I. Gasarch, Andrew C. Y. Lee