Next: Introduction
Using Dynamic User Models in the
Recognition of the Plans of the User
Liliana Ardissono and Dario Sestero
Dipartimento di Informatica - Università di Torino
Cso Svizzera 185, 10149 Torino, Italy
email: {liliana, dario}@di.unito.it
Abstract:
This paper is concerned with information-seeking dialogues in a restricted
domain (we consider a consultation system for a Computer Science Department,
delivering information about the various tasks that the users may want to
perform: for example, how to access the library, get information about
the courses of the Department, etc) and presents a framework where a plan
recognition and a user modeling component are integrated to cooperate in the
task of identifying the user's plans and goals. The focus of the paper is
centered on the techniques used for building the user model and exploiting it in
the determination of the user's intentions. For this task, we use stereotypes
and we propose some inference rules for expanding the user
model by inferring the user's beliefs from both the sentences s/he utters and
the information stored in the plan library of the system, that describes the
actions in the domain. Moreover, we introduce some disambiguation rules that are
applied to the information in the user model for restricting the set of
ambiguous
hypotheses on the user's plans and goals to the most plausible ones. This also
simplifies a further clarification dialogue if it
is necessary for a precise identification of the user's intentions.
Key words: User Modeling, Plan Recognition, Information-Seeking Dialogues,
Natural Language, Pragmatics.
Guido Boella Dottorando
Wed Oct 23 09:42:15 MET 1996