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<Paper uid="P94-1016">
  <Title>INTERLEAVING SYNTAX AND SEMANTICS IN AN EFFICIENT BOTTOM-UP PARSER*</Title>
  <Section position="7" start_page="115" end_page="115" type="concl">
    <SectionTitle>
CONCLUSIONS
</SectionTitle>
    <Paragraph position="0"> We have described an efficient parser that operates bottom-up to produce syntactic and semantic structures fully interleaved. Two techniques combine to reduce the total ambiguity represented in the chart. Limited left-context constraints reduce local syntactic ambiguity, and deferred sortal-constraint application reduces local semantic ambiguity. We have expermentally evaluated these techniques, and shown order-of-magnitude reductions in both number of chart edges and total parsing time. The robust processing capabilities of the parser have also been shown to be able to provide a small but significant increase in the accuracy of a speech recognizer.</Paragraph>
  </Section>
class="xml-element"></Paper>