3969 search results - page 376 / 794 » Query Processing Using Ontologies |
239
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SIGMOD
2009
ACM
16 years 5 months ago
2009
ACM
In this paper, we study a novel form of continuous nearest neighbor queries in the presence of obstacles, namely continuous obstructed nearest neighbor (CONN) search. It considers...
149
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EDBT
2009
ACM
15 years 8 months ago
2009
ACM
In order to become an effective complement to traditional Web-scale text-based image retrieval solutions, content-based image retrieval must address scalability and efficiency iss...
163
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AMR
2006
Springer
15 years 6 months ago
2006
Springer
Inaccurate or ambiguous expressions in queries lead to poor results in information retrieval. We assume that iterative user feedback can improve the quality of queries. To this end...
138
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SIGIR
2009
ACM
15 years 11 months ago
2009
ACM
Pseudo-relevance feedback (PRF) via query-expansion has been proven to be effective in many information retrieval (IR) tasks. In most existing work, the top-ranked documents from...
232
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SIGMOD
2007
ACM
16 years 5 months ago
2007
ACM
With the increasing amount of text data stored in relational databases, there is a demand for RDBMS to support keyword queries over text data. As a search result is often assemble...