A Plan Recognition Model for Subdialogues in Conversations

Task-oriented dialogues occur when two people work cooperatively on a task (e.g., a plan) which is performed during the dialogue. One promising approach to analyzing such dialogues has involved modeling the plans of the speakers in the task domain. In other words, the participants in the conversatio...

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Bibliographic Details
Main Authors: Litman,D J, Allen,J F
Format: Report
Language:English
Subjects:
Conversations
Dialogues
Linguistics
NATURAL LANGUAGE
PLANNING
PROBLEM SOLVING
Psychology
SPEECH
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Summary:Task-oriented dialogues occur when two people work cooperatively on a task (e.g., a plan) which is performed during the dialogue. One promising approach to analyzing such dialogues has involved modeling the plans of the speakers in the task domain. In other words, the participants in the conversation are viewed as accomplishing goals via plans containing the utterances of the conversation as actions in the plan. Previous plan-based approaches to analyzing task-oriented dialogues have not been able to account for many phenomena of concern to discourse analysts. We have developed a model based on a hierarchy of plans and meta-plans that accounts for such interrupting subdialogues as clarifications and corrections, while maintaining the advantages of the plan-based approach. Originator-supplied keywords: Natural language, Dialogues, Discourse structures, Problem solving, Planning, Speech acts, Plan recognition, Meta-plans plan stacks, and Clarification subdialogues.