554 search results - page 17 / 111 » Approximation algorithms and hardness results for labeled co... |
PKDD
2010
Springer
13 years 6 months ago
2010
Springer
Given a contact network that changes over time (say, day vs night connectivity), and the SIS (susceptible/infected/susceptible, flu like) virus propagation model, what can we say ...
STOC
2009
ACM
14 years 8 months ago
2009
ACM
In this paper we study a fundamental open problem in the area of probabilistic checkable proofs: What is the smallest s such that NP naPCP1,s[O(log n), 3]? In the language of har...
APPROX
2008
Springer
13 years 9 months ago
2008
Springer
We consider the variant of the minimum vertex cover problem in which we require that the cover induces a connected subgraph. We give new approximation results for this problem in d...
ECCC
2008
13 years 7 months ago
2008
We construct public-key cryptosystems that are secure assuming the worst-case hardness of approximating the minimum distance on n-dimensional lattices to within small poly(n) fact...
COCOA
2008
Springer
13 years 9 months ago
2008
Springer
This paper deals with approximation algorithms for the prize collecting generalized Steiner forest problem, defined as follows. The input is an undirected graph G = (V, E), a colle...