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ALGORITHMICA
2006
138views more  ALGORITHMICA 2006»
13 years 9 months ago
Planar Graph Coloring Avoiding Monochromatic Subgraphs: Trees and Paths Make It Difficult
We consider the problem of coloring a planar graph with the minimum number of colors so that each color class avoids one or more forbidden graphs as subgraphs. We perform a detail...
Hajo Broersma, Fedor V. Fomin, Jan Kratochví...
COCOON
2005
Springer
14 years 2 months ago
Bounded Degree Closest k-Tree Power Is NP-Complete
Abstract. An undirected graph G = (V, E) is the k-power of an undirected tree T = (V, E ) if (u, v) ∈ E iff u and v are connected by a path of length at most k in T. The tree T ...
Michael Dom, Jiong Guo, Rolf Niedermeier
AIRS
2008
Springer
14 years 3 months ago
Study of Kernel-Based Methods for Chinese Relation Extraction
Abstract. In this paper, we mainly explore the effectiveness of two kernelbased methods, the convolution tree kernel and the shortest path dependency kernel, for Chinese relation e...
Ruihong Huang, Le Sun, Yuanyong Feng
GD
2001
Springer
14 years 1 months ago
Low-Distortion Embeddings of Trees
We prove that every tree T = (V, E) on n vertices with edges of unit length can be embedded in the plane with distortion O( √ n); that is, we construct a mapping f: V → R2 suc...
Robert Babilon, Jirí Matousek, Jana Maxov&a...
ACTA
2010
191views more  ACTA 2010»
13 years 9 months ago
Automata-based verification of programs with tree updates
This paper describes an effective verification procedure for imperative programs that handle (balanced) tree-like data structures. Since the verification problem considered is unde...
Peter Habermehl, Radu Iosif, Tomás Vojnar