A grammar mainly consists of a set of production rules, rewriting rules for transforming strings. Each rule specifies a replacement of a particular string (its left-hand side) with another (its right-hand side). A rule can be … 展开

When Noam Chomsky first formalized generative grammars in 1956, he classified them into types now known as the Chomsky … 展开

Though there is a tremendous body of literature on parsing algorithms, most of these algorithms assume that the language to be parsed is initially described by means of a generative formal grammar, and that the goal is to transform this generative grammar into … 展开

The syntax of grammars
In the classic formalization of generative grammars first proposed by Noam Chomsky in the 1950s, a grammar G consists of the following components:
• A finite set N of nonterminal symbols, that is disjoint 展开

• Abstract syntax tree
• Adaptive grammar
• Ambiguous grammar
• Backus–Naur form (BNF)
• Categorial grammar 展开