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Data diversity is described, and the results of a pilot study are presented. The regions of the input space that cause failure for certain experimental programs are discussed, and data reexpression, the way in which alternate input data sets can be obtained, is examined. A description is given of the retry block which is the data-diverse equivalent of the recovery block, and a model of the retr
data diversity; software fault tolerance; data reexpression; retry block; N-copy programming; N-version programming; fault tolerant computing.

P. Ammann and J. Knight, "Data Diversity: An Approach to Software Fault Tolerance," in IEEE Transactions on Computers, vol. 37, no. , pp. 418-425, 1988.
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