2724 search results - page 381 / 545 » Optimizing Queries on Files |
201
Voted
VLDB
2007
ACM
16 years 3 months ago
2007
ACM
In this paper we argue that developing information extraction (IE) programs using Datalog with embedded procedural extraction predicates is a good way to proceed. First, compared ...
136
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PEPM
2009
ACM
16 years 16 days ago
2009
ACM
Abstract. This paper presents techniques and tools to transform spreadsheets into relational databases and back. A set of data refinement rules is introduced to map a tabular data...
113
Voted
ICALP
2005
Springer
15 years 9 months ago
2005
Springer
We consider the problem of testing the commutativity of a black-box group specified by its k generators. The complexity (in terms of k) of this problem was first considered by Pa...
124
Voted
ECIR
2006
Springer
15 years 5 months ago
2006
Springer
Abstract. WWW Video Search Engines have become increasingly commonplace within the last few years and at the same time video retrieval research has been receiving more attention wi...
120
Voted
VLDB
2004
ACM
15 years 9 months ago
2004
ACM
Histograms and Wavelet synopses provide useful tools in query optimization and approximate query answering. Traditional histogram construction algorithms, such as V-Optimal, optim...