TAILIEUCHUNG - Báo cáo khoa học: "A Terminological Simplification Transformation for Natural Language Question-Answering Systems"

A new method is presented for simplifying the logical expressions used to represent utterance meaning in a natural language system. 1 This simplification method utilizes the encoded knowledge and the limited inference-making capability of a tax onomic knowledge representation system to reduce the constituent structure of logical expressions. | A Terminological Simplification Transformation for Natural Language Question-Answering Systems David G. Stallard BBN Laboratories Inc. 10 Moulton St. Cambridge MA. 02238 Abstract A new method is presented for simplifying the logical expressions used to represent utterance meaning in a natural language This simplification method utilizes the encoded knowledge and the limited inference-making capability of a taxonomic knowledge representation system to reduce the constituent structure of logical expressions. The specific application is to the problem of mapping expressions of the meaning representation language to a database language capable of retrieving actual responses. Particular account is taken of the model-theoretic aspects of this problem. 1. Introduction A common and useful strategy for constructing natural language interface systems is to divide the processing of an utterance into two major stages the first mapping the utterance to a logical expression representing its meaning and the second producing from this logical expression the appropriate response. The second stage is not neccesarily trivial the difficulty of its design is signifigantly affected by the complexity and generalness of the logical expressions it has to deal with. If this issue is not faced squarely it may affect choices made elsewhere in the system. Indeed a need to restrict the form of the meaning representation can be at odds with particular approaches towards producing it - as for example the compositional approach which does not seek to control expression complexity by giving interpretations for whole phrasal patterns but simply combines together the meaning of individual words in a manner appropriate to the syntax of the utterance. Such a conflict is certainly not desirable we want to have freedom of linguistic action as well as to be able to obtain correct responses to utterances. This paper treats in detail the particular manifestation of these issues for natural-language

TỪ KHÓA LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
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.