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<Paper uid="W98-0507">
  <Title>I ! I I</Title>
  <Section position="8" start_page="64" end_page="64" type="concl">
    <SectionTitle>
6 Conclusion
</SectionTitle>
    <Paragraph position="0"> The paper has presented a hierarchical organization of a dependency formalism. The hierarchy is defined by the subsumption relation on subcategories, defined as a mapping between subcategories and sub-categorization frames. Subcategorization frames, in turn, define the number of possible instantiations of a dependency relation and the subcategories that can realize it.</Paragraph>
    <Paragraph position="1"> The hierarchical formalism has shown to be effective in representing parsimoniously - that is, without redundancy - the syntactic and lexical knowledge in an empirical test on 101 Italian verbs.</Paragraph>
    <Paragraph position="2"> Moreover, we have sketched a left-to-right predictive parsing model that takes advantage of the hierarchical knowledge representation in order to make predictions on the structure of the input sentence.</Paragraph>
    <Paragraph position="3"> In the next future we will address a massive empirical test of Italian corpora, and the formal specification of the parsing model, together with a complexity analysis.</Paragraph>
  </Section>
class="xml-element"></Paper>