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<Paper uid="W03-1605">
  <Title>Interrogative Reformulation Patterns and Acquisition of Question Paraphrases</Title>
  <Section position="6" start_page="6" end_page="6" type="concl">
    <SectionTitle>
5 Conclusions and Future Work
</SectionTitle>
    <Paragraph position="0"> In this paper, we showed that automatic recognition of question paraphrases can benefit from understanding the various formulations of the interrogative part. Our paraphrase patterns remove those variations and produce canonical forms which reflect the meaning of the questions (i.e., case frames).</Paragraph>
    <Paragraph position="1"> Not only does this semantic representation facilitates simple and straight-forward ways to compute the similarity of questions, it also produces more accurate results than syntactic phrase representation.</Paragraph>
    <Paragraph position="2"> Our immediate future work is to define paraphrase patterns for other question types. While doing so, we would also like to look into ways to automatically extract patterns. A good starting point would be (Agichtei et al., 2001), which looked for common n-grams anchored at the beginning of questions.</Paragraph>
    <Paragraph position="3"> Once the syntactic superstructure of the interrogative part is factored out, the next task is to tackle reformulations of the sentence part of questions.</Paragraph>
    <Paragraph position="4"> Lately several interesting efforts have been made to extract paraphrase expressions automatically, for instance (Lin and Pantel, 2001; Shinyama et al., 2002).</Paragraph>
    <Paragraph position="5"> We would like to experiment doing the same with the web as the resource.</Paragraph>
    <Paragraph position="6"> Finally, we would like to synthesize the reformulation patterns of the two parts of questions and develop unified paraphrase patterns. Then we will incorporate this new approach in FAQFinder and conduct end-to-end question-answering experiments in order to see how much the use of paraphrase patterns can improve the performance of the system.</Paragraph>
  </Section>
class="xml-element"></Paper>