An Algebraic Approach to Valued Constraint Satisfaction
An Algebraic Approach to Valued Constraint Satisfaction
复制标题
有价值约束满足的代数方法
DOI:
--
复制
发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Amanda Vidal
中科院分区:
文献类型:
--
作者:
Rostislav Horcík;T. Moraschini;Amanda Vidal
We study the complexity of the valued CSP (VCSP, for short) over arbitrary templates, taking the general framework of integral bounded linearly order monoids as valuation structures. The class of problems considered here subsumes and generalizes the most common one in VCSP literature, since both monoidal and lattice conjunction operations are allowed in the formulation of constraints. Restricting to locally finite monoids, we introduce a notion of polymorphism that captures the pp-definability in the style of Geiger’s result. As a consequence, sufficient conditions for tractability of the classical CSP, related to the existence of certain polymorphisms, are shown to serve also for the valued case. Finally, we establish the dichotomy conjecture for the VCSP, modulo the dichotomy for classical CSP.
影响因子:
1.6
作者:
Cohen D
通讯作者:
Cohen D
DOI:
10.1109/focs.2015.80
发表时间:
2015
期刊:
--
影响因子:
--
作者:
Kolmogorov V
通讯作者:
Kolmogorov V