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» The Guarding Problem - Complexity and Approximation
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COR
2007
108views more  COR 2007»
15 years 6 months ago
New primal-dual algorithms for Steiner tree problems
We present new primal-dual algorithms for several network design problems. The problems considered are the generalized Steiner tree problem (GST), the directed Steiner tree proble...
Vardges Melkonian
CRYPTO
2009
Springer
154views Cryptology» more  CRYPTO 2009»
16 years 25 days ago
On Bounded Distance Decoding, Unique Shortest Vectors, and the Minimum Distance Problem
We prove the equivalence, up to a small polynomial approximation factor n/ log n, of the lattice problems uSVP (unique Shortest Vector Problem), BDD (Bounded Distance Decoding) and...
Vadim Lyubashevsky, Daniele Micciancio
FOCS
2002
IEEE
15 years 11 months ago
Covering Problems with Hard Capacities
We consider the classical vertex cover and set cover problems with the addition of hard capacity constraints. This means that a set (vertex) can only cover a limited number of its...
Julia Chuzhoy, Joseph Naor
COMPGEOM
2009
ACM
16 years 24 days ago
On the set multi-cover problem in geometric settings
We consider the set multi-cover problem in geometric settings. Given a set of points P and a collection of geometric shapes (or sets) F, we wish to nd a minimum cardinality subse...
Chandra Chekuri, Kenneth L. Clarkson, Sariel Har-P...
RE
2004
Springer
15 years 11 months ago
COTS Tenders and Integration Requirements
When buying COTS-based software, the customer has to choose between what is available. The supplier may add some minor parts, but rarely everything the customer wants. This means t...
Søren Lauesen