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arXiv 0907.5128cs.FLcs.DC
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有界语言与稀疏通信的元胞自动机

Bounded Languages Meet Cellular Automata with Sparse Communication

Martin Kutrib, Andreas Malcher

摘要:

元胞自动机是相互关联的有限自动机的一维阵列。我们调查的最弱的类之一,实时单向元胞自动机,并施加额外的限制,其细胞间的通信,通过限制允许使用的细胞之间的链接的数量。此外,我们考虑的设备作为有界语言的接受者,以探索边界的非平凡的可判定性问题的细胞自动机类成为可判定的。它示出,即使设备大大减少通信,也就是说,每两个相邻的细胞可能只经常通信,接受有界语言,不是半线性的。如果通信的数量在输入的长度上至少是对数的,那么有几个问题是不可判定的。对于在计算期间通信的总数是线性有界的类,得到相同的结果。

英文摘要:

Cellular automata are one-dimensional arrays of interconnected interacting finite automata. We investigate one of the weakest classes, the real-time one-way cellular automata, and impose an additional restriction on their inter-cell communication by bounding the number of allowed uses of the links between cells. Moreover, we consider the devices as acceptors for bounded languages in order to explore the borderline at which non-trivial decidability problems of cellular automata classes become decidable. It is shown that even devices with drastically reduced communication, that is, each two neighboring cells may communicate only constantly often, accept bounded languages that are not semilinear. If the number of communications is at least logarithmic in the length of the input, several problems are undecidable. The same result is obtained for classes where the total number of communications during a computation is linearly bounded.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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