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Báo cáo khoa học: "Conceptual and Linguistic Laurence Decisions in Generation"

which the best lexical choices and the conceptual decisions are in conflict. To prove our theoritical points, we will take as an example the generation of situations involving a result causation, i.e., a new STATE which arises because of one (or several) prior ACTs (Schank 1975). | Conceptual and Linguistic Decisions in Generation Laurence DANLOS LADL CNRS Université de Paris 7 2 Place Jussieu 75005 Paris France ABSTRACT Generation of texts in natural language requires making conceptual and linguistic decisions. This paper shows first that these decisions involve the use of a discourse grammar secondly that they are all dependent on one another but that there is a priori no reason to give priority to one decision rather than another. As a consequence a generation algorithm must not be modularized in components that make these decisions in a fixed order. 1. Introduction To express in natural language the information given in a semantic representation at least two kinds of decisions have to be made conceptual decisions and linguistic decisions . Conceptual decisions are concerned with questions such as in what order must the information appear in the text which information must be expressed explicitly and what can be left implicit Linguistic decisions deal with questions such as which lexical items to choose which syntactic constructions to choose how to cut the text into paragraphs and sentences The purpose of this paper is to show that conceptual decisions and linguistic decisions cannot be made independently of one another and therefore that a generation system must be based on procedures that promote intimate interaction between conceptual and linguistic decisions. In particular our claim is that a generation process cannot be modularized into a conceptualizer module making conceptual decisions regardless of any linguistic considerations passing its output to a dictionary module which would figure out the lexical items to use accordingly which would then in turn forward its results to a grammar where the appropriate syntactic constructions are chosen and then developed into sentences by a syntactic component . In such generation systems cf. McDonald 1983 and McKeown 1982 it is assumed that the conceptualizer Is language - free i.e. need .