765 search results - page 48 / 153 » Query Processing over Incomplete Autonomous Databases |
RSFDGRC
2005
Springer
15 years 3 months ago
2005
Springer
The paper concerns failing queries in incomplete Distributed Autonomous Information Systems (DAIS) based on attributes which are hierarchical and which semantics at different site...
VLDB
2004
ACM
15 years 3 months ago
2004
ACM
The use of inaccurate or outdated database statistics by the query optimizer in a relational DBMS often results in a poor choice of query execution plans and hence unacceptably lo...
138
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SSD
2007
Springer
15 years 4 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 ...
DEXA
2005
Springer
15 years 3 months ago
2005
Springer
Finding all the occurrences of a twig pattern in an XML database is a core operation for efficient evaluation of XML queries. Holistic twig join algorithm has showed its superiorit...
113
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SIGMOD
2011
ACM
14 years 27 days ago
2011
ACM
Probabilistic database systems have successfully established themselves as a tool for managing uncertain data. However, much of the research in this area has focused on efficient...