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STOC
2006
ACM
186views Algorithms» more  STOC 2006»
14 years 6 months ago
A subset spanner for Planar graphs, : with application to subset TSP
Let > 0 be a constant. For any edge-weighted planar graph G and a subset S of nodes of G, there is a subgraph H of G of weight a constant times that of the minimum Steiner tree...
Philip N. Klein
STOC
2007
ACM
119views Algorithms» more  STOC 2007»
14 years 6 months ago
Balanced max 2-sat might not be the hardest
We show that, assuming the Unique Games Conjecture, it is NPhard to approximate MAX 2-SAT within LLZ + , where 0.9401 < LLZ < 0.9402 is the believed approximation ratio of t...
Per Austrin
RECOMB
2004
Springer
14 years 6 months ago
Chromosomal breakpoint re-use in the inference of genome sequence rearrangement
In order to apply gene-order rearrangement algorithms to the comparison of genome sequences, Pevzner and Tesler [9] bypass gene finding and ortholog identification, and use the or...
David Sankoff, Phil Trinh