7123 search results - page 312 / 1425 » The Ordered Set of Rough Sets |
155
Voted
CATS
2008
15 years 8 months ago
2008
We study the consistency problem for extended global cardinality (EGC) constraints. An EGC constraint consists of a set X of variables, a set D of values, a domain D(x) D for eac...
274
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SSD
2009
Springer
16 years 1 months ago
2009
Springer
The range nearest-neighbor (NN) query is an important query type in location-based services, as it can be applied to the case that an NN query has a spatial region, instead of a lo...
173
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MFCS
1998
Springer
15 years 11 months ago
1998
Springer
It is known that a language is context-free iff it is the set of borders of the trees of recognizable set, where the border of a (labelled) tree is the word consisting of its leaf ...
265
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ICDE
1999
IEEE
16 years 8 months ago
1999
IEEE
Most operations of the relational algebra or SQL require a sorted stream of tuples for efficient processing. Therefore, processing complex relational queries relies on efficient a...
168
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IPCO
2007
15 years 8 months ago
2007
Abstract. We consider the single machine scheduling problem to minimize the average weighted completion time under precedence constrains. Improving on the various 2-approximation a...