First International Conference on Spoken Language Processing (ICSLP 90)

Kobe, Japan
November 18-22, 1990

Conversational Speech Understanding Based on Cooperative Problem Solving

Akio Komatsu, Eiji Oohira, Akira Ichikawa

Central Research Laboratory, Hitachi, Ltd., Tokyo, Japan

Natural conversational speech is so ambiguous that a system for understanding it requires the cooperation of many knowledge sources. We propose here a general framework for cooperative problem solving based on the blackboard model and a TMS (truth maintenance system) with an enhanced proving function. In this framework, a reasonably consistent interpretation is automatically kept on the blackboard, while each knowledge source performs its own inference and puts the results on the blackboard. Based on the proposed cooperative problem solving framework, we established a model for a system which can understand conversational speech through the cooperation of independent knowledge sources. The feasibility and validity of our basic framework were comfirmed by computer simulation experiments with several conversational speeches.

Full Paper

Bibliographic reference.  Komatsu, Akio / Oohira, Eiji / Ichikawa, Akira (1990): "Conversational speech understanding based on cooperative problem solving", In ICSLP-1990, 1225-1228.