Head-driven phrase structure grammar (HPSG) is a highly lexicalized, constraint-based grammar [1] [2] developed by Carl Pollard and Ivan Sag. [3][4] It is a type of phrase structure grammar, as opposed to a dependency grammar, and it is the immediate successor to generalized phrase structure grammar.

W elcome to the HPSG server at The Ohio State University offering current information relating to various aspects of the grammar formalism and linguistic theory of Head-Driven Phrase Structure Grammar.

Head-Driven Phrase Structure Grammar (HPSG) is a formally well-defined approach to grammatical theory that seeks to provide a cognitively plausible model of human languages as systems of declarative constraints. Typed feature structures play a central role in this modeling.

HPSG is a unification-based theory of grammar, which means that structures must satisfy specified constraints on their forms all at once, rather than via a syntactic derivation.

Head-Driven Phrase Structure Grammar (HPSG) is a generative grammar which shares with P&P[2] the common goal of building a scientific theory of the knowledge in the mind of the speaker that makes language possible (Pollard, 1997: 1). Kim (2000: 7) describes it as ‘a non-derivational, constraint-based, surface oriented grammatical architecture’.

This book presents the most complete exposition of the theory of head-driven phrase structure grammar (HPSG), introduced in the authors’ Information-Based Syntax and Semantics.

Nov 5, 2024 · Head-Driven Phrase Structure Grammar (HPSG) is a constraint-based or declarative approach to linguistic knowledge, which analyses all descriptive levels (phonology, morphology, syntax, semantics, pragmatics) with feature value pairs, structure sharing, and relational constraints.

HPSG rests on two essential components: (i) an explicit, highly structured represen-tation of grammatical categories, encoded as typed feature structures, whose complex geometry is motivated by empirical considerations against the background of theo-retical desiderata such as locality; (ii) a set of descriptive constraints on the modeled categor...

Jan 1, 1994 · This book presents the most complete exposition of the theory of head-driven phrase structure grammar (HPSG), introduced in the authors' Information-Based Syntax and Semantics.

of those theories. Thus HPSG shares the general con-cerns of the theoretical linguistics literature, including distinguishing between well-formed and ill-formed expressions and capturing linguistically significa.