TAILIEUCHUNG - Báo cáo khoa học: "INDEXING AND REFERENTIAL DEPENDENCIES WITHIN BINDING THEORY: A COMPUTATIONAL FRAMEWORK"

This work is concerned with the development of instruments for GB parsing. An alternative to the well known indexation system of (Chomsky, 1981) will be proposed and then used to formalize the view of Binding Theory in terms of the generation of constraints on the referential properties of the NPs of a sentence. Finally the problems of verification and satisfiability of BT will be addressed within the proposed framework. | INDEXING AND REFERENTIAL DEPENDENCIES WITHIN BINDING THEORY A COMPUTATIONAL FRAMEWORK Fabio Pianesi Istituto per la Ricerca Scientifica e Tecnologica 38050 Pante di Povo - Trento - Italy pianesi@ ABSTRACT This work is concerned with the development of insfruments for GB parsing. An alternative to the well known indexation system of Chomsky 1981 will be proposed and then used to formalize the view of Binding Theory in terms of the generation of consưaints on the referential properties of the NPs of a sentence. Finally the problems of verification and satisfiability of BT will be addressed within the proposed framework. 1 Introduction This work is concerned with the development of instruments for GB parsing see Barton 1984 Berwick 1987 Kolb Tiersch 1990 in particular our attention will be focused on the Binding Theory henceforth BT a module of the theory of Government and Binding henceforth GB see Chomsky 1981 1986 It has been pointed out eg. in Kolb Tiersch 1990 that the lack of a complete and coherent formalization of a linguistic theory like GB can be a major obstacle in addressing the issue of principle-based parsing this is Hue of BT too in particular with respect to the indexing system of Chomsky 1981 the shortcomings of which have often been pointed out in the literature. A formalism for the treatment of the referential relationships among the NPs of a sentence will be presented that is more expressive than indexation and more effective as a computational tool. In Section 2 the indexing system and the role it plays within BT will be discussed in Section 3 an alternative will be developed that overcomes some of the shortcomings of indexing. Such a system will then be used to formalize the view of BT as a device that generates syntactic constraints on reference. In Section 4 it will be shown how our proposal could be applied to some computational problems . die problems of verification and satisfiability within BT. 2 Preliminaries Since Chomsky 1981 it

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