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» Algorithms for Implicit Hitting Set Problems
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COCOA
2008
Springer
14 years 11 months ago
Multiple Hypernode Hitting Sets and Smallest Two-Cores with Targets
The multiple weighted hitting set problem is to find a subset of nodes in a hypergraph that hits every hyperedge in at least m nodes. We extend the problem to a notion of hypergra...
Peter Damaschke
114
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CCCG
2006
14 years 11 months ago
An O(n log n) Algorithm for the All-Farthest-Segments Problem for a Planar Set of Points
In this paper, we propose an algorithm for computing the farthest-segment Voronoi diagram for the edges of a convex polygon and apply this to obtain an O(n log n) algorithm for th...
Asish Mukhopadhyay, Robert L. Scot Drysdale
ESA
2006
Springer
111views Algorithms» more  ESA 2006»
15 years 1 months ago
Path Hitting in Acyclic Graphs
An instance of the path hitting problem consists of two families of paths, D and H, in a common undirected graph, where each path in H is associated with a non-negative cost. We r...
Ojas Parekh, Danny Segev
ICTCS
2005
Springer
15 years 3 months ago
Improved Exact Exponential Algorithms for Vertex Bipartization and Other Problems
Abstract. We study efficient exact algorithms for several problems including Vertex Bipartization, Feedback Vertex Set, 3-Hitting Set, Max Cut in graphs with maximum degree at most...
Venkatesh Raman, Saket Saurabh, Somnath Sikdar
SOFSEM
2004
Springer
15 years 2 months ago
Avoiding Forbidden Submatrices by Row Deletions
We initiate a systematic study of the Row Deletion(B) problem on matrices: For a fixed “forbidden submatrix” B, the question is, given an input matrix A (both A and B have ent...
Sebastian Wernicke, Jochen Alber, Jens Gramm, Jion...