4397 search results - page 376 / 880 » Relational Algebra Operations |
158
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EDBT
1998
ACM
15 years 10 months ago
1998
ACM
In this paper we present MD, a logical model for OLAP systems, and show how it can be used in the design of multidimensional databases. Unlike other models for multidimensional dat...
163
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DEXAW
1997
IEEE
15 years 10 months ago
1997
IEEE
It is important for any data language that it enables many people to derive correct information from a databases in a simple, effective way with predictable performance. In an ana...
131
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EPEW
2007
Springer
15 years 10 months ago
2007
Springer
A parallel composition is defined for Markov reward chains with fast transitions and for discontinuous Markov reward chains. In this setting, compositionality with respect to the r...
185
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FOSSACS
2008
Springer
15 years 7 months ago
2008
Springer
We present a translation from a logic of access control with a "says" operator to the classical modal logic S4. We prove that the translation is sound and complete. We al...
152
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AAAI
2006
15 years 7 months ago
2006
This paper describes a framework for recognizing contradictions between multiple text sources by relying on three forms of linguistic information: (a) negation; (b) antonymy; and ...