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<Paper uid="P05-2011">
  <Title>Towards an Optimal Lexicalization in a Natural-Sounding Portable Natural Language Generator for Dialog Systems</Title>
  <Section position="5" start_page="64" end_page="65" type="concl">
    <SectionTitle>
4 Outlook and Future Work
</SectionTitle>
    <Paragraph position="0"> We propose a novel approach to lexicalization in NLG in order to generate natural-sounding speech in a portable environment. The use of existing  lexical resources allows a system to be more portable across subject domains and languages, as long as those resources are available for the targeted domains and languages. FrameNet in particular allows us to generate multiple possibilities of natural-sounding output while WordNet helps in a first step to prune this set. FrameNet is further applied on an existing corpus to help with the final decision on choosing the most optimal candidate among the presented possibilities. The valence pattern information in FrameNet helps constructing the detailed syntactic pattern required by the surface realizer.</Paragraph>
    <Paragraph position="1"> A number of issues need further consideration, including the following: * lexical choice: investigation of semantic distances (step 2 of algorithm), use of WordNet and/or other resources for first-step pruning.</Paragraph>
    <Paragraph position="2"> * lexical search: develop initial research ideas further and implement * a user study to assess whether the goals of natural-sounding output and portability have successfully been fulfilled.</Paragraph>
    <Paragraph position="3"> Furthermore, for this generator to be used in a real-life environment, the entire dialog system must be developed; for our research purposes, we have left out the construction of a semantic parser, the dialog manager, and an appropriate domain model. We have also not focused on the development of the aggregation and referring expression generation subtasks in the microplanner.</Paragraph>
  </Section>
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