3969 search results - page 518 / 794 » Query Processing Using Ontologies |
183
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WWW
2007
ACM
16 years 7 months ago
2007
ACM
Although personalized search has been proposed for many years and many personalization strategies have been investigated, it is still unclear whether personalization is consistent...
173
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SIGIR
2010
ACM
15 years 10 months ago
2010
ACM
Pseudo-relevance feedback is an effective technique for improving retrieval results. Traditional feedback algorithms use a whole feedback document as a unit to extract words for ...
187
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SIGMOD
2010
ACM
15 years 1 months ago
2010
ACM
We propose and study a new ranking problem in versioned databases. Consider a database of versioned objects which have different valid instances along a history (e.g., documents i...
179
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SIGMOD
2010
ACM
15 years 11 months ago
2010
ACM
Time-oriented progress estimation for parallel queries is a challenging problem that has received only limited attention. In this paper, we present ParaTimer, a new type of timere...
282
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SIGMOD
2009
ACM
16 years 6 months ago
2009
ACM
Ranking queries are essential tools to process large amounts of probabilistic data that encode exponentially many possible deterministic instances. In many applications where unce...