The most time consuming and expensive step in developing expert systems is knowledge acquisition (KA), and it is important to determine how the limited resources for acquiring knowledge should be allocated across different sources. This paper develops a model that determines how KA resources should be spent and how such a model may be used. (23…

NCR (National Cash Register) Corporation is pursuing opportunities to make their point of sale (POS) terminals easy to use and easy to learn. To approach the goal of making the technology invisible to the user, NCR has developed an adaptive expert prototype system for a department store POS operation. The structure for the adaptive system, the…

This document attempts to identify and promote human factors research that would likely produce results applicable to the evolutionary design of a National Aeronautics and Space Administration (NASA) national space station to be launched in the 1990s. It reports on a symposium designed to yield information applicable to future space systems. The…