Integrating uncertain speech evidence into a knowledge-based message generation system for the nonverbal, severely motor disabled

An intelligent communication device is being developed to assist the nonverbal, motor disabled in the generation of written and spoken messages. The device is based on a knowledge base of the grammatical rules and message elements. A `belief´ reasoning scheme makes use of highly uncertain speech-recognition information in combination with the embedded knowledge to optimize the process of message search. The authors focus on the integration of that speech information. Experimental testing of a prototype system to assess the effects of speech evidence is discussed