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<Paper uid="W02-0215">
  <Title>Issues Under Negotiation</Title>
  <Section position="2" start_page="0" end_page="0" type="intro">
    <SectionTitle>
1 Introduction
</SectionTitle>
    <Paragraph position="0"> In this paper, we give an issue-based account of a simple kind of collaborative negotiative dialogue1. We start from a previous formal account of negotiative dialogue (Sidner, 1994a) and argue for a slightly difierent idea of what negotiative dialogue is. We want to make a distinction between the process of accepting an utterance and its content, which applies to all utterances, and a concept of negotiation deflned, roughly, as a discussion of several alternative solutions to some problem. This latter account is formulated in terms of Issues Under Negotiation (IUN), representing the question or problem to be resolved, and a set of alternative answers, representing the proposed solutions. We argue that this theory improves on certain aspects of Sidner's account while also fltting into a question-based dialogue management framework which has previously been implemented in the GoDiS dialogue system (Bohlin et al., 1999).</Paragraph>
    <Paragraph position="1">  sentation of this work appears in (Larsson, 2002). First, we will give a brief review of Sidner's theory and discuss its merits and drawbacks2.</Paragraph>
    <Paragraph position="2"> We then provide an alternative account based on the concept of Issues Under Negotiation. We explain how IUN can be added to GoDiS, and give an information state analysis of a simple negotiative dialogue. Finally, we draw some conclusions and point to possible future research areas. null</Paragraph>
  </Section>
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