A fast algorithm and datalog inexpressibility for temporal reasoning
A fast algorithm and datalog inexpressibility for temporal reasoning
复制标题
用于时间推理的快速算法和数据记录不可表达性
DOI:
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发表时间:
2008
期刊:
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通讯作者:
Jan Kára
中科院分区:
文献类型:
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作者:
M. Bodirsky;Jan Kára
We introduce a new tractable temporal constraint language, which strictly contains the Ord-Horn language of Bürkert and Nebel and the class of AND/OR precedence constraints. The algorithm we present for this language decides whether a given set of constraints is consistent in time that is quadratic in the input size. We also prove that (unlike Ord-Horn) the constraint satisfaction problem of this language cannot be solved by Datalog or by establishing local consistency.