formal grammar

A precise mathematical description of a formal language, consisting of terminal symbols, nonterminal symbols, a nonterminal symbol serving as start symbol, and a set of production rules that control the expansion of nonterminal symbols into strings consisting of both terminal and nonterminal symbols.See Also: generative grammar, analytic grammar
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Formal grammar — In formal semantics, computer science and linguistics, a formal grammar (also called formation rules) is a precise description of a formal language ndash; that is, of a set of strings over some alphabet. In other words, a grammar describes which… … Wikipedia
Formal system — In formal logic, a formal system (also called a logical system,Audi, Robert (Editor). The Cambridge Dictionary of Philosophy . Second edition, Cambridge University Press, 1999. ISBN 978 0521631365 (hardcover) and ISBN 978 0521637220 (paperback).] … Wikipedia
Formal language — A formal language is a set of words , i.e. finite strings of letters , or symbols . The inventory from which these letters are taken is called the alphabet over which the language is defined. A formal language is often defined by means of a… … Wikipedia
Formal proof — See also: mathematical proof, proof theory, and axiomatic system A formal proof or derivation is a finite sequence of sentences (called well formed formulas in the case of a formal language) each of which is an axiom or follows from the… … Wikipedia
Grammar induction — Grammatical induction, also known as grammatical inference or syntactic pattern recognition, refers to the process in machine learning of inducing a formal grammar (usually in the form of re write rules or productions ) from a set of observations … Wikipedia
Grammar checker — In computing terms, a grammar checker is a program, or part of a program, that attempts to verify written text for grammatical correctness. Grammar checkers are most often implemented as a feature of a larger application, such as a word processor … Wikipedia
Grammar — 1) Grammar as Analogous to a Scientific Theory I think that the failure to offer a precise account of the notion grammar is not just a superficial defect in linguistic theory that can be remedied by adding one more definition. It seems to… … Historical dictionary of quotations in cognitive science
Formal — The term formal has a number of uses, including:General*relating to formality *opposite of informalocial* Formal occasion ** Formal attire worn on such occasions ** Formals are particular meals at some British universities ** In Australian or… … Wikipedia
Grammar school — A grammar school is one of several different types of school in the history of education in the United Kingdom and other English speaking countries.In the modern United States, the term is synonymous with elementary school.The original purpose of … Wikipedia
Grammar framework — In theoretical linguistics, the following fundamental approaches towards constructing grammar frameworks for natural languages are distinguished:*Generative grammar: algorithmic (phrase structure grammars) **Transformational grammar (1960s)… … Wikipedia