Model-Based Reasoning About Cases

Juho Rousu and Robert J. Aarts

Our bioprocess recipe planner Sophist uses a qualitative model to represent a large amount of domain knowledge. This knowledge is used to analyse differences between cases, to construct adaptations, to evaluate suggested plan changes and to explain outcomes. The module for Qualitative Modeling in a CBR system (QMC) was especially developed to support these Case- Based Reasoning tasks. Hence, QMC is tightly integrated in the Sophist framework. Both Sophist as well as QMC have been described earlier so this paper briefly describes planning in Sophist and then focuses on some interesting issues that arose during development and deployment of this multimodal reasoner.

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