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» Logic, Graphs, and Algorithms
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SMC
2010
IEEE
158views Control Systems» more  SMC 2010»
15 years 2 months ago
A study of genetic algorithms for approximating the longest path in generic graphs
Abstract--Finding the longest simple path in a generic undirected graph is a challenging issue that belongs to the NPComplete class of problems. Four approaches based on genetic al...
David Portugal, Carlos Henggeler Antunes, Rui Roch...
ORL
1998
136views more  ORL 1998»
15 years 4 months ago
A primal-dual interpretation of two 2-approximation algorithms for the feedback vertex set problem in undirected graphs
Recently, Becker and Geiger and Bafna, Berman and Fujito gave 2-approximation algorithms for the feedback vertex set problem in undirected graphs. We show how their algorithms can...
Fabián A. Chudak, Michel X. Goemans, Dorit ...
IWC
2000
99views more  IWC 2000»
15 years 4 months ago
Effective information visualisation: a study of graph drawing aesthetics and algorithms
Information visualisation systems which generate diagrams representing discrete relational information must consider potential users if they are to be effective. Many algorithms w...
Helen C. Purchase
GD
2004
Springer
15 years 9 months ago
Dynamic Graph Drawing of Sequences of Orthogonal and Hierarchical Graphs
Abstract. In this paper we introduce two novel algorithms for drawing sequences of orthogonal and hierarchical graphs while preserving the mental map. Both algorithms can be parame...
Carsten Görg, Peter Birke, Mathias Pohl, Step...
IPL
2010
247views more  IPL 2010»
15 years 2 months ago
The Floyd-Warshall algorithm on graphs with negative cycles
The Floyd-Warshall algorithm is a simple and widely used algorithm to compute shortest paths between all pairs of vertices in an edge weighted directed graph. It can also be used ...
Stefan Hougardy