Abstract
This article describes the application of a human-centered approach to the assessment and design of knowledge-based advisory systems for use by design engineers. The human-centered approach has arisen from interdisciplinary research into developing new ways of designing human-computer systems and emphasizes the need to develop systems which extend rather than diminish the skills and knowledge of their users. The traditional rule-based expert systems paradigm is analyzed and it is concluded that it is a typical product of technology-centered design. A human-centered approach to the design of knowledge-based advisory systems is proposed which uses hypertext technology. The application of this approach to the design of a prototype knowledge-based advisory system implemented in Smalltalk for use by control engineers is described.
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