Verification, Validation and Evaluation of Expert Systems
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Verification, Validation and Evaluation of Expert Systems

Filetype[PDF-1.45 MB]



  • Alternative Title:
    Verification, Validation and Evaluation of Expert Systems, Volume I, A FHWA Handbook
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  • Abstract:
    The goals of expert systems are usually more ambitious than those of conventional or algorithmic programs. They frequently perform not only as problem solvers but also as intelligent assistants and training aids. Expert systems have great potential for capturing the knowledge and experience of current senior professionals and making the expert's wisdom available to others in the form of training aids or technical support tools. Applications include design, operations, inspection, maintenance, training, and many others.

    Impelled by the existing environment of lack of consensus among experts and inadequate procedures and tools, the FHWA developed this guideline for expert system verification, validation, and evaluation, complete with software to implement recommended techniques. The guideline is needed because knowledge engineers today do not often design and carry out rigorous test plans for expert systems. The software is necessary because real-world knowledge bases containing hundreds of rules and dozens of variables are difficult for humans to assimilate and evaluate. Computerized verification and validation (V&V) tools would also enable the knowledge engineer to use interim V&V reports to guide knowledge acquisition and coding, something that is too labor-intensive with hand methods. The techniques presented represent a workable solution to a difficult problem. Hopefully they also provide a basis for further enhancements and improvements.

  • Content Notes:
    The original format of this document was an active HTML page(s). The Federal Highway Administration converted the HTML page(s) into an Adobe Acrobat PDF file to preserve and support reuse of the information it contained. The intellectual content of this PDF is an authentic capture of the original HTML file. Hyperlinks and other functions of the HTML webpage may have been lost, and this version of the content may not fully work with screen reading software. Preservation Date: 2020-08-31.
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