902 search results - page 138 / 181 » Efficient and Extensible Algorithms for Multi Query Optimiza... |
141
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ICDCS
2007
IEEE
15 years 4 months ago
2007
IEEE
This paper presents GeoGrid, a geographical location service overlay network system, for providing scalable location-based services to a large and growing number of mobile users. ...
224
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ICDE
2008
IEEE
16 years 1 months ago
2008
IEEE
In this paper we explore database segmentation in the context of a column-store DBMS targeted at a scientific database. We present a novel hardware- and scheme-oblivious segmentati...
107
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SIGIR
2010
ACM
15 years 4 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 ...
101
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PODS
2006
ACM
16 years 18 days ago
2006
ACM
B-trees are the data structure of choice for maintaining searchable data on disk. However, B-trees perform suboptimally ? when keys are long or of variable length, ? when keys are...
106
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DLOG
2010
14 years 10 months ago
2010
Abstract. One of the most frequently used inference services of description logic reasoners classifies all named classes of OWL ontologies into a subsumption hierarchy. Due to emer...