Adaptive Estimation of Information Values in Continuous Decision Making and Control of Advanced Aircraft.
Abstract
This report describes research and development centered on evaluation of information needs in advanced aircraft operations. The selection of information for display is a recurrent, subjective decision involving many factors -- aircraft state, environmental conditions, operator capabilities, and acquisition costs, among others. an adaptive computer model has been developed which incorporates these factors into a multi-attribute decision model. The program is designed to capture the operator's information seeking policy using a training algorithm based on pattern recognition techniques. The individual policy is then used for information system evaluation and for automated information management. Experimental tests of the adaptvie modeling and information management approaches were made using a task simulation resembling multiple intercept operations in advanced aircraft. Individual subjects (12 in study) navigated a simulated aircraft through a hazardous, changing environment. In doing so, the operators selected from five information sources of varying content, cost, delay and detectability. The information was then used to take one of a number of control actions. Information management; using either adaptive estiamtion or off-line direct policy elicitation, was found to result in improved task performance over manual selection, particularly in high speed stress conditions. The adaptive estimation technique was found to be superior to direct policy elicitation, both for automated information management and as a basis for information source evaluation. Possible applications of the techniques are also discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1978
- Accession Number
- ADA069741
Entities
People
- Amos Freedy
- Kent Davis
- Randall Steeb
- Yoram Alperovitch