390 search results - page 27 / 78 » Approximate Query Answering in Locally Closed Databases |
GLOBE
2009
Springer
15 years 2 months ago
2009
Springer
Abstract. We show how to specify and use the metadata for a virtual and relational data integration system under the local-as-view (LAV) approach. We use XML and RuleML for represe...
161
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ICDE
2006
IEEE
15 years 11 months ago
2006
IEEE
Graphs have become popular for modeling structured data. As a result, graph queries are becoming common and graph indexing has come to play an essential role in query processing. ...
SSDBM
2000
IEEE
15 years 2 months ago
2000
IEEE
Fast retrieval of time series in terms of their contents is important in many application domains. This paper studies database techniques supporting fast searches for time series ...
158
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SIGMOD
2005
ACM
15 years 10 months ago
2005
ACM
Statistical estimation and approximate query processing have become increasingly prevalent applications for database systems. However, approximation is usually of little use witho...
110
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DC
2008
14 years 9 months ago
2008
We consider a distributed system where each node keeps a local count for items (similar to elections where nodes are ballot boxes and items are candidates). A top-k query in such ...