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SODA
2010
ACM
167views Algorithms» more  SODA 2010»
16 years 4 months ago
Inapproximability for planar embedding problems
We consider the problem of computing a minimumdistortion bijection between two point-sets in R2 . We prove the first non-trivial inapproximability result for this problem, for the...
Jeff Edmonds, Anastasios Sidiropoulos, Anastasios ...
AAIM
2008
Springer
96views Algorithms» more  AAIM 2008»
16 years 1 months ago
Minimum Leaf Out-Branching Problems
Abstract. Given a digraph D, the Minimum Leaf Out-Branching problem (MinLOB) is the problem of finding in D an out-branching with the minimum possible number of leaves, i.e., vert...
Gregory Gutin, Igor Razgon, Eun Jung Kim
GECCO
2007
Springer
132views Optimization» more  GECCO 2007»
16 years 24 days ago
The multi-objective next release problem
This paper is concerned with the Multi-Objective Next Release Problem (MONRP), a problem in search-based requirements engineering. Previous work has considered only single objecti...
Yuanyuan Zhang, Mark Harman, S. Afshin Mansouri
ICDT
2007
ACM
107views Database» more  ICDT 2007»
16 years 24 days ago
Some Algorithmic Improvements for the Containment Problem of Conjunctive Queries with Negation
Query containment is a fundamental problem of databases. Given two queries q1 and q2, it asks whether the set of answers to q1 is included in the set of answers to q2 for any datab...
Michel Leclère, Marie-Laure Mugnier
ATAL
2005
Springer
16 years 6 days ago
Impact of problem centralization in distributed constraint optimization algorithms
Recent progress in Distributed Constraint Optimization Problems (DCOP) has led to a range of algorithms now available which differ in their amount of problem centralization. Probl...
John Davin, Pragnesh Jay Modi