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CCCG
2008
14 years 11 months ago
Searching for Frequent Colors in Rectangles
We study a new variant of colored orthogonal range searching problem: given a query rectangle Q all colors c, such that at least a fraction of all points in Q are of color c, mus...
Marek Karpinski, Yakov Nekrich
KDD
2001
ACM
203views Data Mining» more  KDD 2001»
15 years 10 months ago
Ensemble-index: a new approach to indexing large databases
The problem of similarity search (query-by-content) has attracted much research interest. It is a difficult problem because of the inherently high dimensionality of the data. The ...
Eamonn J. Keogh, Selina Chu, Michael J. Pazzani
CPAIOR
2007
Springer
15 years 4 months ago
A Position-Based Propagator for the Open-Shop Problem
The Open-Shop Problem is a hard problem that can be solved using Constraint Programming or Operation Research methods. Existing techniques are efficient at reducing the search tree...
Jean-Noël Monette, Yves Deville, Pierre Dupon...
CPM
1999
Springer
93views Combinatorics» more  CPM 1999»
15 years 2 months ago
Pattern Matching in Text Compressed by Using Antidictionaries
In this paper we focus on the problem of compressed pattern matching for the text compression using antidictionaries, which is a new compression scheme proposed recently by Crochem...
Yusuke Shibata, Masayuki Takeda, Ayumi Shinohara, ...
IPL
2008
99views more  IPL 2008»
14 years 9 months ago
A CKY parser for picture grammars
We study the complexity of the membership or parsing problem for pictures generated by a family of picture grammars: Siromoney's Context-Free Kolam Array grammars (coincident...
Stefano Crespi-Reghizzi, Matteo Pradella