tailieunhanh - Báo cáo khoa học: "A FULLY STATISTICAL APPROACH TO NATURAL LANGUAGE INTERFACES "

We present a natural language interface system which is based entirely on trained statistical models. The system consists of three stages of processing: parsing, semantic interpretation, and discourse. Each of these stages is modeled as a statistical process. The models are fully integrated, resulting in an end-to-end system that maps input utterances into meaning representation frames. | A FULLY STATISTICAL APPROACH TO NATURAL LANGUAGE INTERFACES Scott Miller David Stallard Robert Bobrow Richard Schwartz BBN Systems and Technologies 70 Fawcett Street Cambridge MA 02138 szmiller@ stallard@ rusty@ schwartz@ Abstract We present a natural language interface system which is based entirely on trained statistical models. The system consists of three stages of processing parsing semantic interpretation and discourse. Each of these stages is modeled as a statistical process. The models are fully integrated resulting in an end-to-end system that maps input utterances into meaning representation frames. 1. Introduction A recent trend in natural language processing has been toward a greater emphasis on statistical approaches beginning with the success of statistical part-of-speech tagging programs Church 1988 and continuing with other work using statistical part-of-speech tagging programs such as BBN PLUM Weischedel et al. 1993 and NYU Proteus Grishman and Sterling 1993 . More recently statistical methods have been applied to domain-specific semantic parsing Miller et al. 1994 and to the more difficult problem of wide-coverage syntactic parsing Magerman 1995 . Nevertheless most natural language systems remain primarily rule based and even systems that do use statistical techniques such as AT T Chronus Levin and Pieraccini 1995 continue to require a significant rule based component. Development of a complete end-to-end statistical understanding system has been the focus of several ongoing research efforts including Miller et al. 1995 and Koppelman et al. 1995 . In this paper we present such a system. The overall structure of our approach is conventional consisting of a parser a semantic interpreter and a discourse module. The implementation and integration of these elements is far less conventional. Within each module every processing step is assigned a probability value and very large numbers of alternative theories are pursued in .

crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.