3969 search results - page 392 / 794 » Query Processing Using Ontologies |
165
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ICDE
2010
IEEE
15 years 2 months ago
2010
IEEE
In this paper, we propose the Hybrid-Layer Index (simply, the HL-index) that is designed to answer top-k queries efficiently when the queries are expressed on any arbitrary subset ...
151
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KDD
2006
ACM
16 years 5 months ago
2006
ACM
We investigate three methods for defining a session on Web search engines. We examine 2,465,145 interactions from 534,507 Web searchers. We compare defining sessions using: 1) Int...
237
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VLDB
2002
ACM
16 years 5 months ago
2002
ACM
The view selection problem is to choose a set of views to materialize over a database schema, such that the cost of evaluating a set of workload queries is minimized and such that ...
127
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SIGIR
2006
ACM
15 years 11 months ago
2006
ACM
User modeling for information retrieval has mostly been studied to improve the effectiveness of information access in centralized repositories. In this paper we explore user model...
149
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OTM
2005
Springer
15 years 10 months ago
2005
Springer
The strong dynamics of peer-to-peer networks, coupled with the diversity of peer vocabularies, makes query processing in peer database systems a very challenging task. In this pape...