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<Paper uid="E87-1044">
  <Title>T INTEGRATING SEMANTICS kNO FLEXIBLE SYNTAX BY EXPLOITING ISONORPHISM BETWEEN GRAIelATICAL AND SEMANTICAL RELATIONS</Title>
  <Section position="9" start_page="281" end_page="281" type="concl">
    <SectionTitle>
6. CONCLUSION
</SectionTitle>
    <Paragraph position="0"> The SHEILA system has been presented as an attempt to solve the problem of integrating syntax and semantics. The authors propose that syntactic and semantic processes should rely on distinct bodies of knowledge and that the interaction between syntax and semantics should be obtained by exploiting, in a formal way, the isomorphism between syntactic and semantic structures. In order to avoid the lack of efficiency characterizing a syntax-first parser, the authors have designed a flexible syntax which, without exploding the structural ambiguities, supplies semantic interpreter with knowledge about syntactic connections between the words occurring in the text. The isomorphism between syntax and semantics is accounted into a limited set of formal mapping rules and conditions.</Paragraph>
    <Paragraph position="1"> Prepositional phrase attachment, apposition, determination of conjunction's scope and modification of a NP through other NPs are dealt in a satisfactory way both from a syntactical and from a semantical point of view. Other complex linguistic phenomena (as anaphora, quantification and ellipsis) requires a more extensive use of heuristics. The future work will concentrate on these specific aspects in order to check the adequacy of the hypothesis of isomorphism between syntactic and semantic structures to larger fragments of the Italian language.</Paragraph>
  </Section>
class="xml-element"></Paper>