Accession Number : AD0760115

Title :   A Model Driven Question-Answering System for a Computer Assisted Instruction (CAI) Environment.

Descriptive Note : Final rept. Jul 70-May 72,

Corporate Author : SYSTEM DEVELOPMENT CORP SANTA MONICA CALIF

Personal Author(s) : Brown,John S. ; Burton,Richard R. ; Zdybel,Frank

Report Date : MAR 1973

Pagination or Media Count : 62

Abstract : The report describes a question-answering system which permits students in a computer assisted instruction (CAI) environment greater initiative in the variety of questions they can ask concerning the subject area being studied. A method of representing processes as augmented finite-state automata is developed and is shown not only to permit efficient inferencing about dynamic processes but also to provide a satisfactory deep structure for paragraph generation. A CAI system dealing with meteorology is described which uses this automation model to represent the processes in meteorology. Coupled with the dynamic process model is a semantic conceptual network which contains the static information about meteorology. Examples of the inferencing techniques using both the automaton model and the semantic network are given. A sample session with this system is included in the Appendices. (Author) Portions of this document are not fully legible.

Descriptors :   (*PROGRAMMED INSTRUCTION, SYSTEMS ENGINEERING), AUTOMATA, SIMULATION, METEOROLOGY

Subject Categories : Humanities and History

Distribution Statement : APPROVED FOR PUBLIC RELEASE