What is Pregroup grammar?

An adaptive grammar is a formal grammar that explicitly provides mechanisms within the formalism to allow its own production rules to be manipulated.

A definite clause grammar is a way of expressing grammar, either for natural or formal languages, in a logic programming language such as Prolog. It is closely related to the...

Indexed grammars are a generalization of context-free grammars in that nonterminals are equipped with lists of flags, or index symbols.The language produced by an indexed grammar is called an indexed...

Generalized context-free grammar is a grammar formalism that expands on context-free grammars by adding potentially non-context-free composition functions to rewrite rules. Head grammar is an instance of such a GCFG...

In formal grammar theory, the deterministic context-free grammars are a proper subset of the context-free grammars. They are the subset of context-free grammars that can be derived from deterministic pushdown...

In theoretical computer science and formal language theory, a regular tree grammar is a formal grammar that describes a set of directed trees, or terms. A regular word grammar can...

In linguistics, the affix grammars over a finite lattice formalism is a notation for context-free grammars with finite set-valued features, acceptable to linguists of many different schools. The AGFL-project aims...

Higher order grammar is a grammar theory based on higher-order logic. It can be viewed simultaneously as generative-enumerative or model theoretic.

Applicative universal grammar, or AUG, is a universal semantic metalanguage intended for studying the semantic processes in particular languages. This is a linguistic theory that views the formation of phrase...

An operator precedence grammar is a kind of grammar for formal languages. Technically, an operator precedence grammar is a context-free grammar that has the property that no production has either...