A study of dialogue from a standpoint of cognitive science:<P>
Indexical expression of the "speaker-world" representation
<P>
Jun-ichi ABE
<P>
Department of Behavioral Science, Faculty of Letters, Hokkaido University<P>
Sapporo 060, Japan<P>
e-mail: abe@hubs.hokudai.ac.jp
<P>
This study points out the need for an internal model of a speaker 
and an utterance situation, i.e., a model of the "speaker-world", 
in a theoretical treatment of natural language understanding, 
especially in that of discourse understanding.  A kind of indexical 
and schema-type expression is proposed to deal with the internal 
representation of the "speaker-world", and to account for certain 
types of cohesive relations in discourse.
<P> 
Keywords:
speaker, situation, discourse, mental model<P>