TAILIEUCHUNG - Báo cáo khoa học: "A COMPUTATIONAL MODEL OF THE SYNTAX-PROSODY INTERFACE IN TOKYO JAPANESE"

What is the relationship between syntax, prosody and phonetics? This paper argues for a declarative constraint-based theory, in which each step in a derivation adds diverse constraints to a pool. Some of these describe well formed objects in the feature structure domain, in terms of both syntactic and prosodic features. Some characterise the relative prominence of constituents as a partial order over some discrete domain (playing the role of metrical grid). Some are simultaneous equations in the reals, whose solutions represent the pitch level of phonetic objects - high and low tones | WHAT SORT OF TREES DO WE SPEAK A COMPUTATIONAL MODEL OF THE SYNTAX-PROSODY INTERFACE IN TOKYO JAPANESE Pete Whitelock Sharp Laboratories of Europe Ltd. Neave House Winsmore Lane Abingdon Oxon. 0X14 5UD Britain ABSTRACT What is the relationship between syntax prosody and phonetics This paper argues for a declarative constraint-based theory in which each step in a derivation adds diverse constraints to a pool. Some of these describe well formed objects in the feature structure domain in terms of both syntactic and prosodic features. Some characterise the relative prominence of constituents as a partial order over some discrete domain playing the role of metrical grid . Some are simultaneous equations in the reals whose solutions represent the pitch level of phonetic objects - high and low tones. The elements of such a theory are illustrated with a treatment of prosodic phrasing and tone scaling in Tokyo Japanese and the theory is compared to Selkirk and Tateishi s analysis based on the Strict Layer Hypothesis. INTRODUCTION In explorations of the relationship between syntax phonology and phonetics it is now generally agreed that hierarchical prosodic representations are an important organising concept. As Pierrehumbert and Beckman P B 1988 vividly put it We speak trees not strings . One influential view of the geometry of tree representations is Selkirk s 1981 Strict Layer Hypothesis. For Selkirk and others prosodic structures and syntactic structures are objects of different kinds. Yet the nature of the mapping between them remains a question to which explicit accurate and declarative answers have still to be formulated. This paper presents an alternative view in which phonetic constraints are incrementally associated directly with syntactic derivations. More exactly derivations must simultaneously meet the well-formedness conditions on syntactic and prosodic labelling thereby guaranteeing the declarative nature of the syntax-prosody interface. In turn prosodic .

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