Using generalised directive models in knowledge acquisition

Structured development of problem solving methods

“…For instance, Propose&Revise Zdrahal and Motta, 1995) provides a generic reasoning pattern, characterized by iterative sequences of model 'extension' and 'revision', which can be reused quite easily to solve scheduling and design problems. PSMs provide an important technology for supporting structured development approaches in knowledge engineering: they can be used i) to provide strong, model-based frameworks in which to carry out knowledge acquisition van Heijst et al, 1992) and ii) to support the rapid development of robust and maintainable applications through component reuse (Runkel et al, 1996;Motta, 1997;Motta and Zdrahal, 1997). More in general, the study of PSMs can be seen as a way to move beyond the notion of knowledge engineering as an 'art' (Feigenbaum, 1977), to formulate a task-oriented systematization of the field, which will make it possible to produce rigorous handbooks similar to those available for other engineering fields.…”

Generalized directive models: integrating model development and knowledge acquisition

“…Having selected a model from this customizable library, it can be modified as usual with the GDM grammar, or with self-created rules. Cupit, Major, Shadbolt, Smith and Clare (1994) and Major, Cupit and Shadbolt (1994) give an illustrative example of a KA project using a GDM tool in the domain of searching a target area of hostile forces (the tool that was used in this particular published case was the GDM tool from the ACknowledge ProtoKEW workbench (Van Heijst et al, 1992a), but the PC-PACK tool described in Section 2 above is built to a similar design and could be used in this context).…”

“…Since their development and implementation in the KEW workbench in the ACKnowledge project (Van Heijst, Terpstra, Wielinga & Shadbolt, 1992a, b), there has been a number of different interpretations of this grammar idea, and a number of implementations (Motta, O'Hara, Shadbolt, Stutt & Zdrahal, 1996;Benjamins, 1993;Van Heijst, 1995;Le Roux & Laublet, 1993;Major & O'Hara, 1995). In this paper, we will focus on the role of the GDM tool embedded in PC-PACK, a commercially available knowledge analysis toolset (ISL, 1998).…”

A library of system-derived problem-solving methods for planning

“…In this example, we -The fact that the grammar is generative implies that it can only build a ''well-formed'' planner. See Benjamins (1994) for a discussion on the relation between TIN A and other ''grammar'' approaches such as GDMs (van Heijst, Terpstra, Wielinga & Shadbolt, 1992).…”