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<Paper uid="N06-4006">
  <Title>Knowtator: A Protege plug-in for annotated corpus construction</Title>
  <Section position="2" start_page="0" end_page="1" type="intro">
    <SectionTitle>
1 Introduction
</SectionTitle>
    <Paragraph position="0"> Knowtator is a general-purpose text annotation tool for creating annotated corpora suitable for evaluating Natural Language Processing (NLP) systems.</Paragraph>
    <Paragraph position="1"> Such corpora consist of texts (e.g. documents, abstracts, or sentences) and annotations that associate structured information (e.g. POS tags, named entities, shallow parses) with extents of the texts. An annotation schema is a specification of the kinds of annotations that can be created. Knowtator provides a very flexible mechanism for defining annotation schemas. This allows it to be employed for a large variety of corpus annotation tasks.</Paragraph>
    <Paragraph position="2"> Protege is a widely used knowledge representation system that facilitates construction and visualization of knowledge-bases (Noy, 2003)</Paragraph>
  </Section>
class="xml-element"></Paper>