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<Paper uid="P96-1017">
  <Title>Coordination as a Direct Process</Title>
  <Section position="3" start_page="0" end_page="124" type="intro">
    <SectionTitle>
1 Introduction
</SectionTitle>
    <Paragraph position="0"> Coordination has Mways been a centre of academic interest, be it in linguistic theory or in computational linguistics. The problem is that the assumption according to only the constituents of the same category (1) may be conjoined is false; indeed, coordinations of different categories (2)-(3) and of more than one constituent (4)-(5) should not be dismissed though being marginal in written texts and must he accounted for 1.</Paragraph>
    <Paragraph position="1">  nation et (and).</Paragraph>
    <Paragraph position="2"> We focus here on the coordination of syntagmatic categories (as opposite of lexical categories). More precisely, we account for cases of non constituent coordination (4), of Right Node Raising (5) but not for cases of Gapping.</Paragraph>
    <Paragraph position="3"> Our approach which is independent of any framework, is easily and precisely encoded in the formalism of Head Driven Phrase Structure Grammar (HPSG) (Pollard and Sag, 1994), which is based on the notion of head and makes available the feature sharing mechanism we need. The paper is organized as follows. Section 2 gives a brief description of basic data and discusses some constraints and available structures. Section 3 summarizes previous approaches and section 4 is devoted to our approach. The french coordination with el serves throughout the paper as an example.</Paragraph>
  </Section>
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