Search results
Results From The WOW.Com Content Network
Phrase structure rules. Phrase structure rules are a type of rewrite rule used to describe a given language's syntax and are closely associated with the early stages of transformational grammar, proposed by Noam Chomsky in 1957. [ 1] They are used to break down a natural language sentence into its constituent parts, also known as syntactic ...
Parse tree. A parse tree or parsing tree[ 1] (also known as a derivation tree or concrete syntax tree) is an ordered, rooted tree that represents the syntactic structure of a string according to some context-free grammar. The term parse tree itself is used primarily in computational linguistics; in theoretical syntax, the term syntax tree is ...
Basic clause structure is understood in terms of a binary division of the clause into subject ( noun phrase NP) and predicate ( verb phrase VP). The binary division of the clause results in a one-to-one-or-more correspondence. For each element in a sentence, there are one or more nodes in the tree structure that one assumes for that sentence.
Dependency grammar ( DG) is a class of modern grammatical theories that are all based on the dependency relation (as opposed to the constituency relation of phrase structure) and that can be traced back primarily to the work of Lucien Tesnière. Dependency is the notion that linguistic units, e.g. words, are connected to each other by directed ...
Abstract syntax tree. An abstract syntax tree ( AST) is a data structure used in computer science to represent the structure of a program or code snippet. It is a tree representation of the abstract syntactic structure of text (often source code) written in a formal language. Each node of the tree denotes a construct occurring in the text.
In linguistics, X-bar theory is a model of phrase-structure grammar and a theory of syntactic category formation [1] that was first proposed by Noam Chomsky in 1970 [2] reformulating the ideas of Zellig Harris (1951 [3]), and further developed by Ray Jackendoff (1974, [4] 1977a, [5] 1977b [6]), along the lines of the theory of generative grammar put forth in the 1950s by Chomsky.
Parsing. Parsing, syntax analysis, or syntactic analysis is the process of analyzing a string of symbols, either in natural language, computer languages or data structures, conforming to the rules of a formal grammar. The term parsing comes from Latin pars ( orationis ), meaning part (of speech). [ 1]
X-bar theory graph of the sentence "He studies linguistics at the university." Constituency is a one-to-one-or-more relation; every word in the sentence corresponds to one or more nodes in the tree diagram. Dependency, in contrast, is a one-to-one relation; every word in the sentence corresponds to exactly one node in the tree diagram.