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LATIN
2010
Springer
14 years 3 months ago
2010
Springer
Abstract. We define the notion of diversity for families of finite functions, and express the limitations of a simple class of holographic algorithms in terms of limitations on d...
STACS
2005
Springer
14 years 2 months ago
2005
Springer
Cycle covering is a well-studied problem in computer science. In this paper, we develop approximation algorithms for variants of cycle covering problems which bound the size and/o...
CORR
2010
Springer
13 years 8 months ago
2010
Springer
Given a directed graph G with non negative cost on the arcs, a directed tree cover of G is a directed tree such that either head or tail (or both of them) of every arc in G is touc...
ESA
2003
Springer
14 years 1 months ago
2003
Springer
We prove that various geometric covering problems, related to the Travelling Salesman Problem cannot be efficiently approximated to within any constant factor unless P = NP. This ...
ICALP
2010
Springer
14 years 1 months ago
2010
Springer
The general problem of robust optimization is this: one of several possible scenarios will appear tomorrow, but things are more expensive tomorrow than they are today. What should...