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EVENT:

An integrated approach to qualitative model-based diagnosis
Conferences & Talks

22nd International Workshop on Qualitative Reasoning

22 June 2008
Boulder, Colorado, USA

 

description

This work extends model-based diagnosis to systems which convert, move, and process material. Examples of such systems are printers, refineries and food processing plants. Such plants present two challenges to model-based diagnosis: (1) the plant may process 100s-1000s of items per minute so retaining full details of behavior of all past objects is impractical, and (2) complex multi-way interactions can occur among components operating on the same object. We address the first challenge by synopsizing past behavior in a data structure of fixed size. We address the second challenge by introducing the notion of interaction fault which represents the situation where a set of components operating on the same object damage the object even though each component alone produces no noticeable damage. Introducing interaction faults is much simpler than introducing fine-grained models of component object interactions. We demonstrate the approach on a highly redundant printer.

 

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