3969 search results - page 288 / 794 » Query Processing Using Ontologies |
159
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EDBT
2009
ACM
15 years 10 months ago
2009
ACM
Twig queries have been extensively studied as a major fragment of XPATH queries to query XML data. In this paper, we study PXMLRANK query, (Q, k), which is to rank top-k probabili...
164
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DASFAA
2007
IEEE
15 years 10 months ago
2007
IEEE
Nearest-neighbor queries are an important query type for commonly used feature databases. In many different application areas, e.g. sensor databases, location based services or fac...
146
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DOLAP
2003
ACM
15 years 9 months ago
2003
ACM
Multidimensional aggregation queries constitute the single most important class of queries for data warehousing applications and decision support systems. The bottleneck in the ev...
134
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ADC
2003
Springer
15 years 9 months ago
2003
Springer
Semistructured data, in particular XML, has emerged as one of the primary means for information exchange and content management. The power of XML allows authors to structure a doc...
196
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IDEAS
2010
IEEE
15 years 2 months ago
2010
IEEE
Even though an effective cost-based query optimizer is of utmost importance for the efficient evaluation of XQuery expressions in native XML database systems, such a component is...