4397 search results - page 520 / 880 » Relational Algebra Operations |
126
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AIPS
2009
15 years 5 months ago
2009
Recently, Helmert and Geffner proposed the context-enhanced additive heuristic, where fact costs are evaluated relative to context states that arise from achieving first a pivot c...
133
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AIPS
2009
15 years 5 months ago
2009
We provide a theoretical analysis of planning via Petri net unfolding, a novel technique for synthesising parallel plans. Parallel plans are generally valued for their execution f...
143
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DAWAK
2010
Springer
15 years 5 months ago
2010
Springer
Spatial data warehouses (SDW) enable analytical multidimensional queries together with spatial analysis. Mainly, three operations are related to SDW query processing performance: (...
142
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SIGCOMM
2010
ACM
15 years 4 months ago
2010
ACM
Capabilities provide an access control model that can be used to construct systems where safety of protection can be precisely determined. However, in order to be certain of the s...
124
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SIGIR
2010
ACM
15 years 4 months ago
2010
ACM
We present a novel approach to query reformulation which combines syntactic and semantic information by means of generalized Levenshtein distance algorithms where the substitution...