Abstract
This chapter focuses on the approach to knowledge work adopted for advice system (AS) and local office demonstrator (LOD). Knowledge work—the selection of knowledge sources; knowledge elicitation, analysis, characterization, and representation; KB design; and KB development—was a major focus of teams developing the AS and the LOD. For them, knowledge work was regarded as an area in which there was potential for advancing the state of the art. It had value in its own right in the context of developing demonstrators. For the team developing the policy system, especially after the mid-term review when the LOD became the focus for developing an engineered approach to building large knowledge bases, there was no requirement to develop an increasingly comprehensive large knowledge base. The purpose of each policy KB was minimally to provide support for the particular aspect of the prototype being demonstrated. Given the supporting role of the KB, the speed of inferences achieved before the end-of-project demonstrations in early April 1989, and the need to keep responses to queries small, large complex knowledge bases would have been counterproductive for the policy system.
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