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<Paper uid="C92-3140">
  <Title>PARTIAL SYNTHESIS OF SENTENCES BY COROUT1NING CONSTRAINTS ON DIFFERENT LEVELS OF WELL-FORMEDNESS</Title>
  <Section position="4" start_page="0" end_page="0" type="intro">
    <SectionTitle>
1. INTRODUCTION
</SectionTitle>
    <Paragraph position="0"> The objective of the ILLICO project, is the development of a generator of natural language interfaces for the consultation of different kinds of knowledge bases in French. The main external characteristic of the ILLICO interface lies in the fact that it can guide, if necessary, the user while he/she composes sentences.</Paragraph>
    <Paragraph position="1"> Guided composition is done according to the principle of partial synthesis of a sentence. The main internal characteristic of an ILLICO interface is the modularity of its linguistic knowledge specifying the lexical, syntactic, semantic and conceptual levels of wellformedness. In order to take the consequences of these two main characteristics into account, we have developped an approach and a system in which all the constraints on the different levels of well-formedness are coroutined when the system analyzes a given sentence or synthesizes a partial one. In this paper, we describe the external and internal characteristics of the ILLICO interface, and their consequences on sentence processing. Then we describe the principle of coroutining constraints on different levels of well-formedness and the associated Prolog program.</Paragraph>
  </Section>
class="xml-element"></Paper>