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<Paper uid="W99-0631">
  <Title>An Iterative Approach to Estimating Frequencies over a Semantic Hierarchy</Title>
  <Section position="9" start_page="263" end_page="263" type="concl">
    <SectionTitle>
7 Conclusions
</SectionTitle>
    <Paragraph position="0"> We have shown that the standard technique for estimating frequencies over a semantic hierarchy can lead to inaccurate estimates.</Paragraph>
    <Paragraph position="1"> We have described a re-estimation procedure which uses an existing measure of selectional preference and which employs a novel way of selecting a hypernym of a concept. Our experiments indicate that the re-estimation procedure gives more accurate estimates than the standard technique, particularly for strongly selecting verbs. This could prove particularly useful when using selectional restrictions, for example in structural disambiguation.</Paragraph>
  </Section>
class="xml-element"></Paper>