Sciweavers

ACSC
2000
IEEE
14 years 4 months ago
Building Hybrid Knowledge Representations from Text
A significant obstacle to the development of intelligent natural language processing systems is the lack of rich knowledge bases containing representations of world knowledge. Fo...
Josef Meyer, Robert Dale
WG
2001
Springer
14 years 4 months ago
Critical and Anticritical Edges in Perfect Graphs
We call an edge e of a perfect graph G critical if G − e is imperfect and say further that e is anticritical with respect to the complementary graph G. We ask in which perfect gr...
Annegret Wagler
WG
2001
Springer
14 years 4 months ago
The Complexity of the Matching-Cut Problem
Maurizio Patrignani, Maurizio Pizzonia
WG
2001
Springer
14 years 4 months ago
Lower Bounds for Approximation Algorithms for the Steiner Tree Problem
Clemens Gröpl, Stefan Hougardy, Till Nierhoff...
WG
2001
Springer
14 years 4 months ago
Approximation of Pathwidth of Outerplanar Graphs
There exists a polynomial time algorithm to compute the pathwidth of outerplanar graphs [3], but the large exponent makes this algorithm impractical. In this paper, we give an alg...
Fedor V. Fomin, Hans L. Bodlaender
WG
2001
Springer
14 years 4 months ago
Graph Subcolorings: Complexity and Algorithms
In a graph coloring, each color class induces a disjoint union of isolated vertices. A graph subcoloring generalizes this concept, since here each color class induces a disjoint un...
Jirí Fiala, Klaus Jansen, Van Bang Le, Eike...
WG
2001
Springer
14 years 4 months ago
Planarity of the 2-Level Cactus Model
Sabine Cornelsen, Yefim Dinitz, Dorothea Wagner
WG
2001
Springer
14 years 4 months ago
(k, +)-Distance-Hereditary Graphs
In this work we introduce, characterize, and provide algorithmic results for (k, +)–distance-hereditary graphs, k ≥ 0. These graphs can be used to model interconnection networ...
Serafino Cicerone, Gianluca D'Ermiliis, Gabriele D...