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<Paper uid="W05-1605">
  <Title>Generating and selecting grammatical paraphrases</Title>
  <Section position="9" start_page="0" end_page="0" type="concl">
    <SectionTitle>
8 Conclusion
</SectionTitle>
    <Paragraph position="0"> We have presented a surface realiser for TAG which is optimised to support the generation of grammatical paraphrases while also permitting the selection, on the basis of syntactico semantic constraints, of a particular paraphrase. The most efficient optimisation proposed concerns polarity filtering, a global technique that permits the elimination of combinations of lexical items which cannot possibly lead to a syntactically valid sentence. While used here for generating with TAG, the technique is fully general and can be used for parsing [Perrier, 2003] but also for generating with other grammatical frameworks. null Future work will concentrate on extending the grammar and the lexicon to other types of paraphrases (in particular, morphoderivational or cross categorical paraphrases), on providing a systematic evaluation of the paraphrase selection mechanism and on using the realiser for the debugging of an existing TAG for French.</Paragraph>
  </Section>
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