When an expert designer uses a term such as “interference fit" or “H7r6", they effortlessly invoke a rich set of associations across a wide range of experience. While at one level, the meaning of a termsuch as H7 is formally specified, many of these associations are implicitand hard to characterize formally. The explicit concepts build on layersof implicit abstraction; e.g. the concept of _t wo...

An approach to the concept of deep knowledge is outlined. The approach is based on the assumption that the deepness of knowledge results from its explanatory powers. After considering some examples of deep and shallow knowledge and deening deep knowledge and robustness, an approach to the development of quantitative domain models based on deep knowledge is proposed. The proposed approach is bas...

Cognitive psychology suggests that a mental-model consists of two major components: knowledge structures (schema) and processes for using this knowledge (mental operations). A major concern of instructional design is the representation and organization of subject matter content to facilitate learning. The thesis of this paper is that the careful analysis of subject matter content (knowledge) ca...

We present a methodology for building validation models the knowledge structure used during the retrieval phase of our case based reasoning systems This methodology allows a knowledge engineer to start with a textual database of previously solved cases and quickly produce an e ective case based reasoning system Using our methodology we have built two such systems one of these systems operates o...