Phrase Structure Rules
Phrase-structure rules are a way to describe a given language's syntax and are closely associated with the early stages of Transformational Grammar. They are used to break down a natural language sentence into its constituent parts (also known as syntactic categories) namely phrasal categories and lexical categories (aka parts of speech). A grammar that uses phrase structure rules is a type of phrase structure grammar - except in computer science, where it is known as just a grammar, usually context-free. Phrase structure rules as they are commonly employed operate according to the constituency relation and a grammar that employs phrase structures rules is therefore a constituency grammar and as such, it stands in contrast to dependency grammars, which are based on the dependency relation.
Read more about Phrase Structure Rules: Definition, Top Down
Famous quotes containing the words phrase, structure and/or rules:
“And what, then, is belief? It is the demi-cadence which closes a musical phrase in the symphony of our intellectual life.”
—Charles Sanders Peirce (1839–1914)
“The question is still asked of women: “How do you propose to answer the need for child care?” That is an obvious attempt to structure conflict in the old terms. The questions are rather: “If we as a human community want children, how does the total society propose to provide for them?””
—Jean Baker Miller (20th century)
“It would be naive to think that peace and justice can be achieved easily. No set of rules or study of history will automatically resolve the problems.... However, with faith and perseverance,... complex problems in the past have been resolved in our search for justice and peace. They can be resolved in the future, provided, of course, that we can think of five new ways to measure the height of a tall building by using a barometer.”
—Jimmy Carter (James Earl Carter, Jr.)