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» A Threshold of ln n for Approximating Set Cover
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WEA
2005
Springer
97views Algorithms» more  WEA 2005»
14 years 1 months ago
Multiple-Winners Randomized Tournaments with Consensus for Optimization Problems in Generic Metric Spaces
Abstract. Extensions of the randomized tournaments techniques introduced in [6, 7] to approximate solutions of 1-median and diameter computation of finite subsets of general metri...
Domenico Cantone, Alfredo Ferro, Rosalba Giugno, G...
FOCS
2008
IEEE
14 years 2 months ago
Linear Level Lasserre Lower Bounds for Certain k-CSPs
We show that for k ≥ 3 even the Ω(n) level of the Lasserre hierarchy cannot disprove a random k-CSP instance over any predicate type implied by k-XOR constraints, for example ...
Grant Schoenebeck
ICCAD
2006
IEEE
141views Hardware» more  ICCAD 2006»
14 years 4 months ago
Algorithms for MIS vector generation and pruning
Ignoring the effect of simultaneous switching for logic gates causes silicon failures for high performance microprocessor designs. The main reason to omit this effect is the run...
Kenneth S. Stevens, Florentin Dartu
STOC
2009
ACM
160views Algorithms» more  STOC 2009»
14 years 8 months ago
CSP gaps and reductions in the lasserre hierarchy
We study integrality gaps for SDP relaxations of constraint satisfaction problems, in the hierarchy of SDPs defined by Lasserre. Schoenebeck [25] recently showed the first integra...
Madhur Tulsiani
CCCG
2007
13 years 9 months ago
Generalized Watchman Route Problem with Discrete View Cost
In this paper, we introduce a generalized version of the Watchman Route Problem (WRP) where the objective is to plan a continuous closed route in a polygon (possibly with holes) a...
Pengpeng Wang, Ramesh Krishnamurti, Kamal Gupta