Statistical Test Compaction Using Binary Decision Trees

  • Authors:
  • Sounil Biswas;Ronald D. (Shawn) Blanton

  • Affiliations:
  • Carnegie Mellon University;Carnegie Mellon University

  • Venue:
  • IEEE Design & Test
  • Year:
  • 2006

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Abstract

Because of the significant cost of explicitly testing an integrated, heterogeneous device for all its specifications, there is a need for a test methodology that minimizes test cost while maintaining product quality and limiting yield loss. The authors are developing a decision-tree-based statistical-learning methodology to compact the complete specification-based test set of an integrated device by eliminating redundant tests. A test is deemed redundant if its output can be reliably predicted using other tests that are not eliminated. To ensure the required accuracy for commercial devices, the authors employ a number of modeling and data-massaging techniques to reduce prediction error. Test compaction results produced for a commercial MEMS accelerometer are promising in that they indicate it is possible to eliminate an expensive mechanical test.