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    30.1 On Path-Based Learning And Its Applications In Delay Test And Diagnosis

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    This paper describes the implementation of a novel path-based learning methodology that can be applied for two purposes: (1) In a presilicon simulation environment, path-based learning can be used to produce a fast and approximate simulator for statistical timing simulation. (2) In post-silicon phase, path-based learning can be used as a vehicle to derive critical paths based on the pass/fail behavior observed from the test chips. Our path-based learning methodology consists of four major components: a delay test pattern set, a logic simulator, a set of selected paths as the basis for learning, and a machine learner. We explain the key concepts in this methodology and present experimental results to demonstrate its feasibility and applications
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