Logical Description of Contex-Free Graph Languages
Logical Description of Contex-Free Graph Languages
复制标题
无上下文图语言的逻辑描述
DOI:
10.1006/jcss.1997.1510
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发表时间:
1997
期刊:
影响因子:
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通讯作者:
V. V. Oostrom
中科院分区:
文献类型:
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作者:
J. Engelfriet;V. V. Oostrom
A graph language L is in the class C-edNCE of context-free edNCE graph languages if and only if L= f(T) where f is a partial function on graphs that can be defined in monadic second-order logic and T is the set of all trees over some ranked alphabet. This logical characterization implies a large number of closure and decidability properties of the context-free edNCE graph languages. Rather than context-free graph grammars we use regular path descriptions to define graph languages. ] 1997 Academic Press