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New ways to get accurate reliability measures (software)

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2 Author(s)
Brocklehurst, S. ; City Univ., London, UK ; Littlewood, Bev

Two techniques that analyze prediction accuracy and enhance predictive power of a software reliability model are presented. The u-plot technique detects systematic differences between predicted and observed failure behavior, allowing the recalibration of a software reliability model to obtain more accurate predictions. The perpetual likelihood ratio (PLR) technique compares two models' abilities to predict a particular data source so that the one that has been most accurate over a sequence of predictions can be selected. The application of these techniques is illustrated using three sets of real failure data.<>

Published in:

Software, IEEE  (Volume:9 ,  Issue: 4 )