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<Paper uid="N03-1013">
  <Title>A Categorial Variation Database for English</Title>
  <Section position="1" start_page="0" end_page="0" type="abstr">
    <SectionTitle>
Abstract
</SectionTitle>
    <Paragraph position="0"> We describe our approach to the construction and evaluation of a large-scale database called &amp;quot;CatVar&amp;quot; which contains categorial variations of English lexemes. Due to the prevalence of cross-language categorial variation in multilingual applications, our categorial-variation resource may serve as an integral part of a diverse range of natural language applications.</Paragraph>
    <Paragraph position="1"> Thus, the research reported herein overlaps heavily with that of the machine-translation, lexicon-construction, and information-retrieval communities.</Paragraph>
    <Paragraph position="2"> We apply the information-retrieval metrics of precision and recall to evaluate the accuracy and coverage of our database with respect to a human-produced gold standard. This evaluation reveals that the categorial database achieves a high degree of precision and recall.</Paragraph>
    <Paragraph position="3"> Additionally, we demonstrate that the database improves on the linkability of Porter stemmer by over 30%.</Paragraph>
  </Section>
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