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» Maximal Intersection Queries in Randomized Graph Models
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NLP
2000
13 years 11 months ago
Monte-Carlo Sampling for NP-Hard Maximization Problems in the Framework of Weighted Parsing
Abstract. The purpose of this paper is (1) to provide a theoretical justification for the use of Monte-Carlo sampling for approximate resolution of NP-hard maximization problems in...
Jean-Cédric Chappelier, Martin Rajman
ISI
2007
Springer
14 years 1 months ago
Organizing Hot-Spot Police Patrol Routes
—We address the problem of planning patrol routes to maximize coverage of important locations (hot spots) at minimum cost (length of patrol route). We model a road network using ...
Sudarshan S. Chawathe
WEBDB
2004
Springer
154views Database» more  WEBDB 2004»
14 years 1 months ago
Twig Query Processing over Graph-Structured XML Data
XML and semi-structured data is usually modeled using graph structures. Structural summaries, which have been proposed to speedup XML query processing have graph forms as well. Th...
Zografoula Vagena, Mirella Moura Moro, Vassilis J....
CORR
2011
Springer
169views Education» more  CORR 2011»
12 years 11 months ago
Pseudo-random graphs and bit probe schemes with one-sided error
We study probabilistic bit-probe schemes for the membership problem. Given a set A of at most n elements from the universe of size m we organize such a structure that queries of t...
Andrei E. Romashchenko
CIKM
2011
Springer
12 years 7 months ago
Estimating selectivity for joined RDF triple patterns
A fundamental problem related to RDF query processing is selectivity estimation, which is crucial to query optimization for determining a join order of RDF triple patterns. In thi...
Hai Huang 0003, Chengfei Liu