3969 search results - page 373 / 794 » Query Processing Using Ontologies |
137
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ICEIS
2009
IEEE
15 years 11 months ago
2009
IEEE
In an information retrieval system, a thesaurus can be used for query expansion, i.e. adding words to queries in order to improve recall. We propose a semi-automatic and interactiv...
230
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ICDE
2006
IEEE
16 years 6 months ago
2006
IEEE
Wireless sensor networks generate a vast amount of data. This data, however, must be sparingly extracted to conserve energy, usually the most precious resource in battery-powered ...
242
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GIS
2007
ACM
16 years 5 months ago
2007
ACM
In this paper, we present an original network graph embedding to speed-up distance-range and k-nearest neighbor queries in (weighted) graphs. Our approach implements the paradigm ...
160
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CSE
2009
IEEE
15 years 11 months ago
2009
IEEE
—With the abundance of location-aware portable devices such as cellphones and PDAs, a new emerging application is to use this pervasive computing platform to learn about the wher...
149
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CHI
2011
ACM
14 years 8 months ago
2011
ACM
People routinely rely on Internet search engines to support their use of interactive systems: they issue queries to learn how to accomplish tasks, troubleshoot problems, and other...