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A planbased model of misunderstandings in cooperative dialogue

Summary: A plan­based model of misunderstandings in
cooperative dialogue
Liliana Ardissono, Guido Boella and Rossana Damiano
Dipartimento di Informatica, Universit`a di Torino, Corso Svizzera n.185, 10149 Torino,
Italy. email: fliliana, guidog@di.unito.it
This work is going to appear in the International Journal of Human­Computer Studies,
Special Issue on Detecting, Repairing, and Preventing Human­Machine Miscommunica­
We describe a plan­based agent architecture that models misunderstandings in cooperative NL
agent communication; it exploits a notion of coherence in dialogue based on the idea that the
explicit and implicit goals which can be identified by interpreting a conversational turn can
be related with the previous explicit / implicit goals of the interactants. Misunderstandings
are hypothesized when the coherence of the interaction is lost (i.e. an unrelated utterance
comes). The processes of analysis (and treatment) of a misunderstanding are modeled as rational
behaviors caused by the acquisition of a supplementary goal, when an incoherent turn comes:
the agent detecting the incoherence commits to restore the intersubjectivity in the dialogue; so,
he restructures his own contextual interpretation, or he induces the partner to restructure his
(according to who seems to have made the mistake). This commitment leads him to produce a
repair turn, which initiates a subdialogue aimed at restoring the common interpretation ground.
Since we model speech acts uniformly with respect to the other actions (the domain level actions),


Source: Ardissono, Liliana - Dipartimento di Informatica, Universitą di Torino


Collections: Computer Technologies and Information Sciences