619 search results - page 19 / 124 » Query Planning in Infomaster |
107
Voted
IJCAI
2003
15 years 3 months ago
2003
Information integration systems provide a uniform query interface to a set of sources. One of the key challenges for an information integration system is to provide maximally comp...
213
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SIGMOD
2006
ACM
16 years 2 months ago
2006
ACM
Text is ubiquitous and, not surprisingly, many important applications rely on textual data for a variety of tasks. As a notable example, information extraction applications derive...
218
Voted
ICDE
2008
IEEE
16 years 3 months ago
2008
IEEE
Data sources on the web are often accessible through web interfaces that present them as relational tables, but require certain attributes to be mandatorily selected, e.g., via a w...
154
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ICDE
2012
IEEE
13 years 4 months ago
2012
IEEE
— Accurate query performance prediction (QPP) is central to effective resource management, query optimization and query scheduling. Analytical cost models, used in current genera...
133
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ICDE
2009
IEEE
15 years 8 months ago
2009
IEEE
— A paramount challenge in probabilistic databases is the scalable computation of confidences of tuples in query results. This paper introduces an efficient secondary-storage o...