408 search results - page 19 / 82 » Relation Algebras for Reasoning about Time and Space |
106
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SMA
2010
ACM
14 years 12 months ago
2010
ACM
We present a novel method for fast retrieval of exact Minkowski sums of pairs of convex polytopes in R3 , where one of the polytopes keeps rotating. The algorithm is based on pre-...
SIGMOD
1996
ACM
15 years 3 months ago
1996
ACM
Magic sets rewriting is a well-known optimization heuristic for complex decision-support queries. There can be many variants of this rewriting even for a single query, which diffe...
AMAI
2006
Springer
14 years 11 months ago
2006
Springer
Most real-world database applications manage temporal data, i.e., data with associated time references that capture a temporal aspect of the data, typically either when the data i...
114
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LICS
2010
IEEE
14 years 9 months ago
2010
IEEE
Stream circuits are a convenient graphical way to represent streams (or stream functions) computed by finite dimensional linear systems. We present a sound and complete expression...
PPSWR
2004
Springer
15 years 5 months ago
2004
Springer
This paper presents a piece in a big mosaic which consists of formalisms and software packages for representing and reasoning with everyday temporal notions. The kernel of the mosa...