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<Paper uid="W06-1113">
  <Title>Variants of tree similarity in a Question Answering task</Title>
  <Section position="2" start_page="0" end_page="0" type="abstr">
    <SectionTitle>
Abstract
</SectionTitle>
    <Paragraph position="0"> The results of experiments on the application of a variety of distance measures to a question-answering task are reported.</Paragraph>
    <Paragraph position="1"> Variants of tree-distance are considered, including whole-vs-sub tree, node weighting, wild cards and lexical emphasis. We derive string-distance as a special case of tree-distance and show that a particular parameterisation of tree-distance out-performs the string-distance measure.</Paragraph>
  </Section>
class="xml-element"></Paper>