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158
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ICDT
2010
ACM
15 years 8 months ago
2010
ACM
Schema mapping composition is a fundamental operation in schema management and data exchange. The mapping composition problem has been extensively studied for a number of mapping ...
125
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IOR
2006
15 years 4 months ago
2006
The paper considers robust optimization to cope with uncertainty about the stock return process in one period option hedging problems. The robust approach relates portfolio choice ...
144
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ICDT
2010
ACM
15 years 3 months ago
2010
ACM
Schema mapping composition is a fundamental operation in schema management and data exchange. The mapping composition problem has been extensively studied for a number of mapping ...
156
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TNN
2010
14 years 11 months ago
2010
Compared to Singular Value Decomposition (SVD), Generalized Low Rank Approximations of Matrices (GLRAM) can consume less computation time, obtain higher compression ratio, and yiel...
137
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ICDM
2009
IEEE
15 years 11 months ago
2009
IEEE
—With the vast increase in collection and storage of data, the problem of data summarization is most critical for effective data management. Since much of this data is categorica...