An approximation trichotomy for Boolean #CSP
An approximation trichotomy for Boolean #CSP
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布尔值的近似三分法
DOI:
10.1016/j.jcss.2009.08.003
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发表时间:
2010
影响因子:
1.1
通讯作者:
Dyer M
中科院分区:
文献类型:
--
作者:
Dyer M
We give a trichotomy theorem for the complexity of approximately counting the number of satisfying assignments of a Boolean CSP instance. Such problems are parameterised by a constraint language specifying the relations that may be used in constraints. If every relation in the constraint language is affine then the number of satisfying assignments can be exactly counted in polynomial time. Otherwise, if every relation in the constraint language is in the co-clone IM2from Post's lattice, then the problem of counting satisfying assignments is complete with respect to approximation-preserving reductions for the complexity class #RHΠ1. This means that the problem of approximately counting satisfying assignments of such a CSP instance is equivalent in complexity to several other known counting problems, including the problem of approximately counting the number of independent sets in a bipartite graph. For every other fixed constraint language, the problem is complete for #P with respect to approximation-preserving reductions, meaning that there is no fully polynomial randomised approximation scheme for counting satisfying assignments unless NP=RP.
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影响因子:
1.6
作者:
Feder, T;Vardi, MY
通讯作者:
Vardi, MY
DOI:
10.1137/070690201
发表时间:
2007-04
期刊:
SIAM J. Comput.
影响因子:
--
作者:
M. Dyer;L. A. Goldberg;M. Jerrum
通讯作者:
M. Dyer;L. A. Goldberg;M. Jerrum
DOI:
--
发表时间:
2005
期刊:
Electron. Colloquium Comput. Complex.
影响因子:
--
作者:
N. Creignou;Phokion G. Kolaitis;B. Zanuttini
通讯作者:
B. Zanuttini
影响因子:
0.5
作者:
Elmar Böhler;S. Reith;Henning Schnoor;H. Vollmer
通讯作者:
H. Vollmer