TAILIEUCHUNG - Báo cáo khoa học: "A Constraint-based Approach to English Prosodic Constituents"

The paper develops a constraint-based theory of prosodic phrasing and prominence, based on an HPSG framework, with an implementation in ALE. Prominence and juncture are represented by n-ary branching metrical trees. The general aim is to define prosodic structures recursively, in parallel with the definition of syntactic structures. We address a number of prima facie problems arising from the discrepancy between syntactic and prosodic structure . | A Constraint-based Approach to English Prosodic Constituents Ewan Klein Division of Informatics University of Edinburgh 2 Buccleuch Place Edinburgh EH8 9LW UK ewan@ Abstract The paper develops a constraint-based theory of prosodic phrasing and prominence based on an HPSG framework with an implementation in ALE. Prominence and juncture are represented by n-ary branching metrical trees. The general aim is to define prosodic structures recursively in parallel with the definition of syntactic structures. We address a number of prima facie problems arising from the discrepancy between syntactic and prosodic structure 1 Introduction This paper develops a declarative treatment of prosodic constituents within the framework of constraintbased phonology as developed for example in Bird 1995 Mastroianni and Carpenter 1994 . On such an approach phonological representations are encoded with typed feature terms. In addition to the representational power of complex feature values the inheritance hierarchy of types provides a flexible mechanism for classifying linguistic structures and for expressing generalizations by means of type inference. To date little work within constraint-based phonology has addressed prosodic structure above the level of the foot. In my treatment I will adopt the following assumptions 1. Phonology is induced in parallel with syntactic structure rather than being mapped from prebuilt parse trees. 2. Individual lexical items do not impose constraints on their neighbour s phonology. The first of these assumptions ensures that phonology is compositional in the sense that the only information available when assembling the phonology of a complex constituent is the phonology of that constituents daughters. The second assumption is one that is standardly adopted in HPSG Pollard and Sag 1994 in the sense that heads can be subcategorized with respect to the syntactic and semantic properties of their arguments . their arguments synsem values but .

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