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Data diversity: an approach to software fault tolerance

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2 Author(s)
Ammann, P.E. ; Dept. of Comput. Sci., Virginia Univ., Charlottesville, VA, USA ; Knight, J.C.

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 retry block, together with some empirical results is presented. N-copy programming which is the data-diverse equivalent of N-version programming is considered, and a simple model and some empirical results are also given

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Computers, IEEE Transactions on  (Volume:37 ,  Issue: 4 )