281 search results - page 9 / 57 » The Complexity of Planar Counting Problems |
STACS
2010
Springer
14 years 2 months ago
2010
Springer
The degree of a CSP instance is the maximum number of times that a variable may appear in the scope of constraints. We consider the approximate counting problem for Boolean CSPs wi...
COCO
2004
Springer
14 years 1 months ago
2004
Springer
We prove a parameterized analog of Schaefer’s Dichotomy Theorem: we show that for every finite boolean constraint family F, deciding whether a formula containing constraints fr...
COCO
1998
Springer
13 years 12 months ago
1998
Springer
We show that the perfect matching problem is in the complexity class SPL in the nonuniform setting. This provides a better upper bound on the complexity of the matching problem, a...
SAT
2004
Springer
14 years 1 months ago
2004
Springer
Kolaitis and Vardi pointed out that constraint satisfaction and conjunctive query containment are essentially the same problem. We study the Boolean conjunctive queries under a mor...
COMPGEOM
2007
ACM
13 years 11 months ago
2007
ACM
The paper consists of two major parts. In the first part, we re-examine relative -approximations, previously studied in [12, 13, 18, 25], and their relation to certain geometric p...