tailieunhanh - Báo cáo khoa học: "Embedding New Information into Referring Expressions"

This paper focuses on generating referring expressions capable of serving multiple communicative goals. The components of a referring expression are divided into a referring part and a non-referring part. Two rules for the content determination and construction of the non-referring part are given, which are realised in an embedding algorithm. | Embedding New Information into Referring Expressions Hua Cheng Department of Artificial Intelligence University of Edinburgh El7 80 South Bridge Edinburgh EH1 1HN . Email huac@ Abstract This paper focuses on generating referring expressions capable of serving multiple communicative goals. The components of a referring expression are divided into a referring part and a non-referring part. Two rules for the content determination and construction of the non-referring part are given which are realised in an embedding algorithm. The significant aspect of our approach is that it intends to generate the non-referring part given the restrictions imposed by the referring part whose realisation is on the other hand affected by the non-referring part. 1 Components of a Referring Expression The referring expression is a very important and complex construction in languages. It can serve multiple communicative goals including referring to an object providing new information about it and expressing the speaker s emotional attitude towards it Appelt 1985 . Although a formal model of referring built within the framework of a general theory of speech acts and rationality is given in Appelt and Kronfeld 1987 and this can be used to explain how referring acts achieve multiple goals there is a gap between the general model and the planning of the linguistic content of a referring expression. We divide the constituents in a referring expression1 into two parts based on their communicative goals and the rules for their content determination and realisation. They are a referring part which intends to refer to an object and a non-referring part which intends to provide additional new information about the object. For example in the actual writing style of Xuanzong who was a well-known calligrapher the bold faced items belong to the referring part and the underlined ones to the non-referring part. The division is a pragmatic one and the two parts are closely related to each .