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ORL
1998
136views more  ORL 1998»
13 years 8 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 ...
WEA
2005
Springer
119views Algorithms» more  WEA 2005»
14 years 2 months ago
On Symbolic Scheduling Independent Tasks with Restricted Execution Times
Ordered Binary Decision Diagrams (OBDDs) are a data structure for Boolean functions which supports many useful operations. It finds applications in CAD, model checking, and symbol...
Daniel Sawitzki
SPATIALCOGNITION
2004
Springer
14 years 1 months ago
Treemap: An O(log n) Algorithm for Simultaneous Localization and Mapping
This paper presents a very efficient SLAM algorithm that works by hierarchically dividing the map into local regions and subregions. At each level of the hierarchy each region stor...
Udo Frese
SIAMCOMP
2008
137views more  SIAMCOMP 2008»
13 years 8 months ago
Approximate Shortest Paths in Anisotropic Regions
Our goal is to find an approximate shortest path for a point robot moving in a planar subdivision with n vertices. Let 1 be a real number. Distances in each face of this subdivis...
Siu-Wing Cheng, Hyeon-Suk Na, Antoine Vigneron, Ya...
COCO
2010
Springer
152views Algorithms» more  COCO 2010»
14 years 16 days ago
A Log-Space Algorithm for Reachability in Planar Acyclic Digraphs with Few Sources
Designing algorithms that use logarithmic space for graph reachability problems is fundamental to complexity theory. It is well known that for general directed graphs this problem...
Derrick Stolee, Chris Bourke, N. V. Vinodchandran