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» Parameterized Complexity and Approximation Algorithms
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SOCO
2010
Springer
15 years 1 months ago
Using evolution strategies to solve DEC-POMDP problems
Decentralized partially observable Markov decision process (DEC-POMDP) is an approach to model multi-robot decision making problems under uncertainty. Since it is NEXP-complete the...
Baris Eker, H. Levent Akin
APLAS
2006
ACM
16 years 11 days ago
XML Validation for Context-Free Grammars
String expression analysis conservatively approximates the possible string values generated by a program. We consider the validation of a context-free grammar obtained by the analy...
Yasuhiko Minamide, Akihiko Tozawa
GECCO
2006
Springer
137views Optimization» more  GECCO 2006»
15 years 10 months ago
Inside a predator-prey model for multi-objective optimization: a second study
In this article, new variation operators for evolutionary multiobjective algorithms (EMOA) are proposed. On the basis of a predator-prey model theoretical considerations as well a...
Christian Grimme, Karlheinz Schmitt
NETWORKS
2011
15 years 1 months ago
Line planning, path constrained network flow and inapproximability
Abstract. We consider a basic subproblem which arises in line planning, and is of particular importance in the context of a high system load or robustness: How much can be routed m...
Christina Büsing, Sebastian Stiller
PODS
2006
ACM
217views Database» more  PODS 2006»
16 years 6 months ago
A simpler and more efficient deterministic scheme for finding frequent items over sliding windows
In this paper, we give a simple scheme for identifying approximate frequent items over a sliding window of size n. Our scheme is deterministic and does not make any assumption on ...
Lap-Kei Lee, H. F. Ting