Finite-state phonology in HPSG
Steven Bird · 1992
Attention on constraint-based grammar formalisms such as Head-driven Phrase Structure Grammar (HPSG) has focussed on syntax and semantics to the exclusion of phonology. This paper investigates the incorporation of a non-procedural theory of phonology into HPSG, based on the 'one-level' model of Bird & Ellison (1992). The standard rule-representation distinction is replaced by the description-object distinction which is more germane in the context of constraint-based grammar. Prosodic domains, which limit the applicability of phonological constraints, are expressed in a prosodic type hierarchy modelled on HPSG's lexical type hierarchy. Interactions between phonology and morphology and between phonology and syntax are discussed and exemplified.