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<Paper uid="E85-1040">
  <Title>USER MODELLING, DIALOG STRUCTURE, AND DIALOG STRATEGY IN RAM-ANS</Title>
  <Section position="3" start_page="0" end_page="0" type="intro">
    <SectionTitle>
INTRODUCTION
</SectionTitle>
    <Paragraph position="0"> The HAMburg Application-oriented Natural language System (HAM-ANS) which has been developed for 3 years is now accomplished. We could perform numerous dialogs with the system thus determining the advantages and shortcomings of our approach (Hoeppner at al. |984). So now the time has come to show the open problems and what we have learned as did the EUFID group when they accomplished their system (Templeton, Burger 1983). This paper does not evaluate the overall HAM-ANS but is restricted to the aspect of dialog structuring and user modelling.</Paragraph>
    <Paragraph position="1"> Dialog structure is represented at two levels: the outline of the dialog is explicitly represented by a top (evel routine, embedded sub-dialogs are a result of the processing strategy of HAM-ANS. The overall dialog structure is utilized for determining the appropriate degree of detail of the referential knowledge for a particular dialog phase. The embedded sub-dialogs refer to other knowledge sources than the referential knowledge.</Paragraph>
    <Paragraph position="2"> In the first part of this paper dialog structuring in HAM-ANS is described. Handling of dialog phenomena as ellipsis and anaphora is not</Paragraph>
  </Section>
class="xml-element"></Paper>