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» On the Containment of Forbidden Patterns Problems
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PODS
2000
ACM
137views Database» more  PODS 2000»
13 years 10 months ago
Query Containment for Data Integration Systems
The problem of query containment is fundamental to many aspects of database systems, including query optimization, determining independence of queries from updates, and rewriting ...
Todd D. Millstein, Alon Y. Levy, Marc Friedman
CIKM
2006
Springer
13 years 10 months ago
Heuristic containment check of partial tree-pattern queries in the presence of index graphs
The wide adoption of XML has increased the interest of the database community on tree-structured data management techniques. Querying capabilities are provided through tree-patter...
Dimitri Theodoratos, Stefanos Souldatos, Theodore ...
CIE
2007
Springer
14 years 13 days ago
Hierarchies in Fragments of Monadic Strict NP
We expose a strict hierarchy within monotone monadic strict NP without inequalities (MMSNP), based on the number of second-order monadic quantifiers. We do this by studying a fin...
Barnaby Martin, Florent R. Madelaine
COR
2007
97views more  COR 2007»
13 years 6 months ago
Two-stage general block patterns for the two-dimensional cutting problem
This paper presents an algorithm for the unconstrained two-dimensional cutting problem of rectangular pieces. It proposes the two-stage general block pattern that can be cut into ...
Yaodong Cui, Xianquan Zhang
CSR
2006
Springer
13 years 10 months ago
Window Subsequence Problems for Compressed Texts
Given two strings (a text t of length n and a pattern p) and a natural number w, window subsequence problems consist in deciding whether p occurs as a subsequence of t and/or findi...
Patrick Cégielski, Irène Guessarian,...