5166 search results - page 227 / 1034 » Web Query Optimizer |
239
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COMAD
2009
15 years 7 months ago
2009
An ontology is an explicit specification of shared conceptualization. The Web Ontology Language (OWL) is a family of knowledge representation languages for authoring ontologies, a...
182
Voted
SIGIR
2008
ACM
15 years 6 months ago
2008
ACM
We investigate a representative case of sudden information need change of Web users. By analyzing search engine query logs, we show that the majority of queries submitted by users...
217
Voted
VLDB
2001
ACM
15 years 10 months ago
2001
ACM
Most modern DBMS optimizers rely upon a cost model to choose the best query execution plan (QEP) for any given query. Cost estimates are heavily dependent upon the optimizer’s e...
160
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WWW
2003
ACM
16 years 7 months ago
2003
ACM
In contrast to traditional document retrieval, a web page as a whole is not a good information unit to search because it often contains multiple topics and a lot of irrelevant inf...
179
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ICDE
2008
IEEE
16 years 26 days ago
2008
IEEE
— The database research community has recently recognized the usefulness of skyline query. As an extension of existing database operator, the skyline query is valuable for multi-...