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VLDB
2002
ACM
15 years 10 months ago
2002
ACM
The view selection problem is to choose a set of views to materialize over a database schema, such that the cost of evaluating a set of workload queries is minimized and such that ...
ISDA
2009
IEEE
15 years 4 months ago
2009
IEEE
— In this contribution a feature selection method in semi-supervised problems is proposed. This method selects variables using a feature clustering strategy, using a combination ...
ISCAS
2005
IEEE
15 years 3 months ago
2005
IEEE
— In this paper we provide a survey of three classes of combinatorial optimization problems that arise in communication network analysis. These problems, referred to as QoS (Qual...
EVOW
2003
Springer
15 years 2 months ago
2003
Springer
This paper considers the problem of minimizing the response time for a given database workload by a proper choice of indexes. This problem is NP-hard and known in the literature as...
IJKESDP
2010
14 years 8 months ago
2010
— In this paper, several portfolio selection problems with normal mixture distributions including fuzziness are proposed. Until now, many researchers have proposed portfolio mode...