带数据值约束的Büchi自动机的扩展
Extending Büchi Automata with Constraints on Data Values
摘要：
最近，数据树和数据字在XML推理和系统验证方面受到了相当大的关注。这些是树或词，除了来自有限字母表的标签之外，还携带来自无限字母表的数据值（数据）。一般来说，很难获得足够表达的数据字和树的逻辑，但对于可满足性问题仍然具有合理的复杂性。在本文中，我们扩展和研究的概念，Büchi自动机的欧米茄字的数据。我们证明了这种扩张的空性问题在初等复杂性下是可判定的。然后，我们应用我们的结果来显示两种逻辑的可判定性的欧米茄字的数据：一阶逻辑的两个变量的片段和一些经典的线性时序逻辑的欧米茄字的数据的扩展。
英文摘要：
Recently data trees and data words have received considerable amount of attention in connection with XML reasoning and system verification. These are trees or words that, in addition to labels from a finite alphabet, carry data values from an infinite alphabet (data). In general it is rather hard to obtain logics for data words and trees that are sufficiently expressive, but still have reasonable complexity for the satisfiability problem. In this paper we extend and study the notion of Büchi automata for omega-words with data. We prove that the emptiness problem for such extension is decidable in elementary complexity. We then apply our result to show the decidability of two kinds of logics for omega-words with data: the two-variable fragment of first-order logic and some extensions of classical linear temporal logic for omega-words with data.
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