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<Paper uid="E91-1032">
  <Title>Multiple Interpreters in a Principle-Based Model of Sentence Processing</Title>
  <Section position="2" start_page="0" end_page="0" type="intro">
    <SectionTitle>
1 Introduction
</SectionTitle>
    <Paragraph position="0"> A central aim of computational psycholinguistics is the development of models of human sentence processing which account not only for empirical performance phenomena, but which also provide some insight into the nature of between parser and grammar relationship.</Paragraph>
    <Paragraph position="1"> In concurrent research, we are developing a model of sentence processing which has its roots in the principles and parameters paradigm of syntactic theory \[1\], \[2\], which holds that a number of representations are involved in determining a well-formed analysis of an utterance. This, in conjunction with Fodor's Modularity Hypothesis \[6\], has led us to postulate a model which consists of four informationally encapsulated modules for recovering (1) phrase structure, (2) chains (3) coreference, and (4) thematic structure.</Paragraph>
    <Paragraph position="2"> In this paper we will briefly review a model of sentence processing which has been previously proposed in \[5\] and \[3\]. We will illustrate how this model can be naturally implemented within the logic programming paradigm. In particular, we sketch a subset of GB theory which defines principles in tern~ of their representational units, or schemas. We then discuss how the individual processors may be implemented as specialised, informationally encapsulated interpreters, and discuss how the 'freeze' directive of constraint logic programming can be used to effectively coroutine the interpreters, to achieve incremental interpretation and concurrency.</Paragraph>
  </Section>
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