789 search results - page 114 / 158 » On Theory Revision with Queries |
178
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PODS
2007
ACM
16 years 6 months ago
2007
ACM
We show that relational algebra calculations for incomplete databases, probabilistic databases, bag semantics and whyprovenance are particular cases of the same general algorithms...
142
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ATAL
2007
Springer
16 years 12 days ago
2007
Springer
We present a powerful new account of multi-agent knowledge in the situation calculus and an effective reasoning procedure for handling knowledge queries. Our approach generalizes...
141
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SAC
2006
ACM
16 years 5 days ago
2006
ACM
In the paper we describe the problem of grouping and aggregation in the concept-oriented data model. The model is based on ordering its elements within a hierarchical multidimensi...
176
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COMPGEOM
2004
ACM
15 years 11 months ago
2004
ACM
We consider the problem of approximate range counting over streams of d-dimensional points. In the data stream model, the algorithm makes a single scan of the data, which is prese...
169
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SIGIR
2004
ACM
15 years 11 months ago
2004
ACM
In recent years, statistical language models are being proposed as alternative to the vector space model. Viewing documents as language samples introduces the issue of defining a...