829 search results - page 106 / 166 » Location-aware Query Processing and Optimization |
227
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ICDE
2003
IEEE
16 years 3 months ago
2003
IEEE
Expressing complex OLAP queries using group-by, aggregation, and joins can be extremely difficult. As a result of this, many alternate ways of expressing such queries have been de...
184
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SSD
2007
Springer
15 years 8 months ago
2007
Springer
In the k-medoid problem, given a dataset P, we are asked to choose k points in P as the medoids. The optimal medoid set minimizes the average Euclidean distance between the points ...
140
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VLDB
2007
ACM
15 years 8 months ago
2007
ACM
Testing a database engine has been and continues to be a challenging task. The space of possible SQL queries along with their possible access paths is practically unbounded. Moreo...
117
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ICIP
2003
IEEE
16 years 4 months ago
2003
IEEE
In this paper, we evaluate and investigate two main types of relevance feedback algorithms; the Euclidean and the correlation?based approaches. In the first case, we examine heuri...
97
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WWW
2007
ACM
16 years 3 months ago
2007
ACM
Most RDF query languages allow for graph structure search through a conjunction of triples which is typically processed using join operations. A key factor in optimizing joins is ...