tailieunhanh - Báo cáo khoa học: "DESCRIPTION STRATEGIES FOR NAIVE AND EXPERT USERS"

It is widely recognized that a question-answerlng system should be able to tailor its answers to the user. One of the dimensions Mong which thus tailoring can occur is with respect to the level of knowledge of a user about a domain. In particular, responses should be different depending on whether they are addressed to ns/ve or expert users. To understand what those differences should be, we a~alyzed texts from adult and iunior encyclopedias. W e found that two different strategies were used in describing complex physical obiects to juniors and adults. W e show how these strategies have. | DESCRIPTION STRATEGIES FOR NAIVE AND EXPERT USERS Cếcile L. Paris Department of Computer Science Columbia University New York NY 10027 Abstract It IS widely recognized that a question-answering system should be able to tailor its answers to the user One of the dimensions along which this tailoring can occur IS with respect to the level of knowledge of a user about a domain. In particular responses should be different depending on whether they are addressed to naive or expert users. To understand what those differences should be we analyzed texts from adult and junior encyclopedias. We found that two different strategies were used in describing complex physical objects to juniors and adults. We show how these strategies have been implemented on a test database We plan to use this distinction in the questionanswering program for RESEARCHER a system being developed at Columbia University RESEARCHER reads remembers and generalizes from patents abstracts written in English Lebowitz 83 . The abstracts describe complex physical objects in which spatial and functional relations are important Thus we are interested in characterizing spatial strategies that can be used for experts and novices about certain physical objects. We give details in the paper of the current implementation of description strategies on a test database of object descriptions. OUR DOMAIN INTRODUCTION Whether the purpose of a natural language program IS to ease man-machine interactions Kaplan 82 Hayes and Reddy 79 or to model human communication Lehnert 78 it must take into consideration certain characteristics of the person engaged in the interaction. In an interaction between people the goals beliefs intentions knowledge and past experience of the participants will play a role in how they communicate with each other Cohen and Perrault 79 Perrault and Allen 80 . Similarly those characteristics should play a role in the way a computer system interacts with a user. In particular a question-answering .