2009 | OriginalPaper | Buchkapitel
The Theory of Stabilisation Monoids and Regular Cost Functions
verfasst von : Thomas Colcombet
Erschienen in: Automata, Languages and Programming
Verlag: Springer Berlin Heidelberg
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We introduce the notion of regular cost functions: a quantitative extension to the standard theory of regular languages.
We provide equivalent characterisations of this notion by means of automata (extending the nested distance desert automata of Kirsten), of history-deterministic automata (history-determinism is a weakening of the standard notion of determinism, that replaces it in this context), and a suitable notion of recognisability by stabilisation monoids. We also provide closure and decidability results.