5221 search results - page 230 / 1045 » An On-line Problem Database |
152
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PR
2008
15 years 6 months ago
2008
Prototype selection problem consists of reducing the size of databases by removing samples that are considered noisy or not influential on nearest neighbour classification tasks. ...
195
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PODS
2004
ACM
16 years 6 months ago
2004
ACM
The problem of deciding query containment has important applications in classical query optimization and heterogeneous database systems. Query containment is undecidable for unres...
163
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ER
2009
Springer
16 years 1 months ago
2009
Springer
Abstract. We discuss the existence of matrix representations for generalised and minimum participation constraints which are frequently used in database design and conceptual model...
206
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ADBIS
2004
Springer
15 years 12 months ago
2004
Springer
In this paper we consider concurrent execution of multiple data mining queries in the context of discovery of frequent itemsets. If such data mining queries operate on similar part...
127
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MFDBS
1989
15 years 10 months ago
1989
One of the key problems when extending relational database query languages to include deductive capabilities, is to provide them with efficient methods for answering recursive que...