In linguistics, a rewrite rule for natural language (phrase structure rule, analog of production rules in formal grammars) in generative grammar is a rule of the form A → X where A is a syntactic category label, such as noun phrase or sentence, and X is a sequence of such labels and/or morphemes, expressing the fact that A can be replaced by X in generating the constituent structure of a sentence.
Example:
S → NP VP
Which means: Sentence consists of Noun Phrase followed by Verb Phrase.
Rewrite rules underlie rewriting systems; there are many different varieties of rewriting systems that are commonly studied.
Read more about Rewrite Rule: See Also
Famous quotes containing the word rule:
“This administration is going to be a compassionate administration. We believe in the Golden Rule of doing unto others as you would have them do unto you.”
—Lyndon Baines Johnson (1908–1973)