1 Formal Language Theory
نویسنده
چکیده
This chapter provides a gentle introduction to formal language theory, aimed at readers with little background in formal systems. The motivation is natural language processing (NLP), and the presentation is geared towards NLP applications, with linguistically motivated examples, but without compromising mathematical rigor. The text covers elementary formal language theory, including: regular languages and regular expressions; languages vs. computational machinery; finite state automata; regular relations and finite state transducers; context-free grammars and languages; the Chomsky hierarchy; weak and strong generative capacity; and mildly context-sensitive languages.
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