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Displaying similar documents to “Special Issue: Non-Classical Models of Automata and Applications III (NCMA-2011)”

Systems of parallel communicating restarting automata

Marcel Vollweiler, Friedrich Otto (2014)

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications

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Several types of systems of parallel communicating restarting automata are introduced and studied. The main result shows that, for all types of restarting automata X, centralized systems of restarting automata of type X have the same computational power as non-centralized systems of restarting automata of the same type and the same number of components. This result is proved by a direct simulation. In addition, it is shown that for one-way restarting automata without auxiliary symbols,...

Efficient simulation of synchronous systems by multi-speed systems

Tomasz Jurdziński, Mirosław Kutyłowski, Jan Zatopiański (2010)

RAIRO - Theoretical Informatics and Applications

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We consider systems consisting of finite automata communicating by exchanging messages and working on the same read-only data. We investigate the situation in which the automata work with constant but different speeds. We assume furthermore that the automata are not aware of the speeds and they cannot measure them directly. Nevertheless, the automata have to compute a correct output. We call this model multi-speed systems of finite automata. Complexity measure that we consider...

Returning and non-returning parallel communicating finite automata are equivalent

Ashish Choudhary, Kamala Krithivasan, Victor Mitrana (2007)

RAIRO - Theoretical Informatics and Applications

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A parallel communicating automata system consists of several automata working independently in parallel and communicating with each other by request with the aim of recognizing a word. Rather surprisingly, returning parallel communicating finite automata systems are equivalent to the non-returning variants. We show this result by proving the equivalence of both with multihead finite automata. Some open problems are finally formulated.