Abstract
The TEST Development Environment (TDE) enables knowledge engineers and trained domain experts to interactively build knowledge bases representing troubleshooting knowledge. TEST is an application shell, providing a domain-independent diagnostic problem solver together with a library of schematic prototypes. TDE provides both system-directed interrogation and a user-directed editor for building up the knowledge base. Novice users of TDE rely heavily on the guidance offered by system prompts, while experienced users tend to use the direct manipulation of graphic items as a preferred method. This paper examines four facets of TDE: first, the core concepts of the underlying diagnostic system; second, the knowledge acquisition mechanism; third, workbench functions for knowledge-base modification; and finally debugging support within the workbench.
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