Restarting automata with auxiliary symbols restricted by lookahead size
نویسندگان
چکیده
منابع مشابه
Restarting Automata with Auxiliary Symbols and Small Lookahead
We present a study on lookahead hierarchies for restarting automata with auxiliary symbols and small lookahead. In particular, we show that there are just two different classes of languages recognised by RRWW automata, through the restriction of lookahead size. We also show that the respective (left-) monotone restarting automaton models characterise the context-free languages and that the resp...
متن کاملRestarting automata with restricted utilization of auxiliary symbols
The restarting automaton is a restricted model of computation that was introduced by Jančar et al. to model the so-called analysis by reduction, which is a technique used in linguistics to analyze sentences of natural languages. The most general models of restarting automata make use of auxiliary symbols in their rewrite operations, although this ability does not directly correspond to any aspe...
متن کاملLookahead Hierarchies of Restarting Automata
The restarting automaton is a special kind of the linear bounded automaton with a read/write window of fixed length. It works in cycles, reducing the length of the actual word in each cycle. We study several versions of restarting automata and we show several hierarchies of language classes recognized by them with respect to the size of the read/write-window.
متن کاملOn Restarting Automata with Rewriting
Motivated by natural language analysis we introduce restarting automata with rewriting. They are acceptors on the one hand, and (special) regulated rewriting systems on the other hand. The computation of a restarting automaton proceeds in cycles: in each cycle, a bounded substring of the input word is rewritten by a shorter string, and the computation restarts on the arising shorter word. We sh...
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In the present thesis we introduce several ways of extending restarting automata to devices for realizing binary (word) relations, which is mainly motivated by linguistics. In particular, we adapt the notion of input/output-relations and proper-relations to restarting automata and to parallel communicating systems of two restarting automata (PC-systems). Further, we introduce a new model, calle...
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ژورنال
عنوان ژورنال: International Journal of Computer Mathematics
سال: 2014
ISSN: 0020-7160,1029-0265
DOI: 10.1080/00207160.2014.926005