A demonstration of expert systems applications in transportation engineering : volume III, evaluation of the prototype expert system TRANZ.

22257652Final report.PDFTech ReportVTRC 91-R9FHWA/VA-91-R9VirginiaVirginia Transportation Research CouncilDemetsky, Michael J.Virginia Transportation Research CouncilUS Transportation CollectionThe validation and evaluation of an expert system for traffic control in highway work zones (TRANZ) is described. The stages in the evaluation process consisted of the following: revisit the experts, selectively distribute copies of TRANZ with documentation and an evaluation form, perform research on identifying related problems that affect the problem domain of TRANZ, and conduct a formal evaluation workshop. It was found that it is very difficult to develop a system that will accurately handle all possible permutations of a problem. The validation process should establish a range of applicability, which can be continually updated as the system "grows" with experience. All expert systems are seen to require a mechanism for continual support past the prototype demonstration through a team familiar with the problem and the system building technique