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The functional representation (FR) framework, which captures the causal component of a design rationale (DR), is described. FR encodes the designer's account of the causal processes in the device that culminate in achieving its function. The representation makes explicit the components' roles in the causal process. The limitations of FR as a design(More)
The information processing task of redesign and its subtasks of diagnosis and repair are an­ alyzed. Various kinds of knowledge required for redesign problem solving are identified, and a scheme for representing them is described. In this scheme, the functions of the device and its structural components are represented ex­ plicitly, and causal and(More)
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One method for making analogies is to access and instantiate abstract domain principles, and one method for acquiring knowledge of abstract principles is to discover them from experience. We view generalization over experiences in the absence of any prior knowledge of the target principle as the task of hypothesis formation, a subtask of discovery. Also, we(More)
Humans appear to often solve problems in a new domain by transferring their expertise from a more familiar domain. However, making such cross-domain analogies is hard and often requires abstractions common to the source and target domains. Recent work in case-based design suggests that generic mechanisms are one type of abstractions used by designers.(More)
THAT DESIGN CAN BE ROUTINE, innovative, or creative, has become a standard cliche among researchers building AI theories of design. Whether or not this is an especially productive classification of design processing, the cliche indicates that innovation and creativity in design are important research topics. That analogy plays a central role in innovation(More)