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<Paper uid="P85-1035">
  <Title>Native: Learner: Native: Learner: Native: Learner: Native: Remember the s~ory of David and Goliath?</Title>
  <Section position="1" start_page="0" end_page="0" type="abstr">
    <SectionTitle>
Abstract
</SectionTitle>
    <Paragraph position="0"> The problem of manually modifying the lexicon appears with any natural language processing program.</Paragraph>
    <Paragraph position="1"> Ideally, a program should be able to acquire new lexieal entries from context, the way people learn. We address the problem of acquiring entire phrases, specifically Jigurative phr~es, through augmenting a phr~al lezico~ Facilitating such a self-extending lexicon involves (a) disambiguation~se|ection of the intended phrase from a set of matching phrases, (b) robust parsin~-comprehension of partially-matching phrases, and (c) error analysis---use of errors in forming hypotheses about new phrases. We have designed and implemented a program called RINA which uses demons to implement funetional-~rammar principles. RINA receives new figurative phrases in context and through the application of a sequence of failure-driven rules, creates and refines both the patterns and the concepts which hold syntactic and semantic information about phrases.</Paragraph>
    <Paragraph position="2">  No. David took on Goliath.</Paragraph>
    <Paragraph position="3"> He took on him. He yon the fight? No. He took him on.</Paragraph>
    <Paragraph position="4"> David attacked him.</Paragraph>
    <Paragraph position="5"> He ~ok him on.</Paragraph>
    <Paragraph position="6"> He accepted She challenge? Right.</Paragraph>
    <Paragraph position="7"> Native: Learner: Here in annt,her story.</Paragraph>
    <Paragraph position="8"> John took on the third exam question.</Paragraph>
    <Paragraph position="9"> He took on a hard problem.</Paragraph>
    <Paragraph position="10"> Another dialogue involves put one's foot do~-a. Again, the phrase is unknown while its constituents are known:</Paragraph>
    <Section position="1" start_page="0" end_page="0" type="sub_section">
      <SectionTitle>
Going Punk
</SectionTitle>
      <Paragraph position="0"/>
    </Section>
  </Section>
class="xml-element"></Paper>