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<Paper uid="C80-1058">
  <Title>UNIT-TO-UNIT INTERACTION AS A BASIS FOR SEMANTIC INTERPRETATION OF JAPANESE SENTENCES</Title>
  <Section position="8" start_page="0" end_page="387" type="concl">
    <SectionTitle>
7. CONCLUSION
</SectionTitle>
    <Paragraph position="0"> In order to explain a basic notion of UNIT-to-UNIT interaction, we showed a very simple example in the Sec.6. Based on the idea, we have implemented a semantic interpretation system called EXPLUS \[12,14\]. Our experiments by EXPLUS proved that EXPLUS can extract semantic strucures from rather complicated Japanese sentences. Sato uses in turn the semantic structures as a source to generate Japanese sentences\[ll\]. However, we have needed more refinements for UNIT description. For example, we have augmented following features to the UNIT description described in the Sec.3.</Paragraph>
    <Paragraph position="1"> (a) Incorporation of arbitrary LISP programs in &lt;precondition&gt; through which we can specify FILLER's semantics in any level  of details; (b) A special slot &amp;quot;part-of&amp;quot; to organize part-whole relations \[5\]; (c) &amp;quot;Without&amp;quot; and &amp;quot;selector&amp;quot; descriptions  to exclude undesirable slots in the superordinate UNITs.</Paragraph>
    <Paragraph position="2"> They are related to the problems of knowledge representation. The details of (a)(c) will be explained in \[14\]. In \[14\], more complex examples of UNIT-to-UNIT interaction will be explained.</Paragraph>
    <Paragraph position="3"> From our experience, we believe that UNIT-to-UNIT interaction gives us a reasonable framework for semantic interpretation, and will be feasibly applicable to other kinds of languages such as Egnlish.</Paragraph>
    <Paragraph position="4">  ACKNOWLEDGEMENT: The author is grateful to Dr. Fuchi, Head of the Pattern Information Division of Electrotechnical Laboratory, for his patient encouragement of this study. Thanks are also due to all members of the Machine Inference Section of Electrotechnical Laboratory, for their valuable discussions.</Paragraph>
  </Section>
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