tailieunhanh - Báo cáo khoa học: "A LOGICAL APPROACH TO ARABIC PHONOLOGY"

Logical approaches to linguistic description, particularly those which employ feature structures, have generally treated phonology as though it was the same as orthography. This approach breaks down for languages where the phonological shape of a morpheme can be heavily dependent on the phonological shape of another, as is the case in Arabic. In this paper we show how the tense logical approach investigated by Blackburn (1989) can be used to encode hierarchical and temporal phonological information of the kind explored by Bird (1990). . | A LOGICAL APPROACH TO ARABIC PHONOLOGY Steven Bird Patrick Blackbum University of Edinburgh Centre for Cognitive Science 2 Buccleuch Place Edinburgh EH8 9LW Scotland ABSTRACT Logical approaches to linguistic description particularly those which employ feature structures have generally treated phonology as though it was the same as orthography. This approach breaks down for languages where the phonological shape of a morpheme can be heavily dependent on the phonological shape of another as is the case in Arabic. In this paper we show how the tense logical approach investigated by Blackbum 1989 can be used to encode hierarchical and temporal phonological information of the kind explored by Bird 1990 . Then we show how some Arabic morphemes may be represented and combined1. INTRODUCTION There is an increasingly widespread view that linguistic behaviour results from the complex interaction of multiple sources of partial information. This is exemplified by the rapidly growing body of work on natural language syntax and semantics such as the Unification-Based Grammar Formalisms. Similarly in phonology there is a popular view of phonological representations as having the same topology as a spừal-bound notebook where segments or slots are strung out along the spine and each page gives a structural description of that string according to some descriptive vocabulary. Crucially only those segmental strings which are licensed by all of the independent descriptions are acceptable. The practical difficulty is to come up with a model of grammatical organization which allows the right information to be brought to bear at the right stage. One model which looks particularly attractive in this regard considers the traditional modules of grammar . syntax semantics and phonology not in series where the output of one feeds into the input of the next but rather in parallel where each module exerts independent constraints. For example a .

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