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Direct Optimisation for Calculating Maximum Likelihood Estimates of Parameters of the Weibull Distribution

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2 Author(s)
Brian D. Bunday ; B.Sc., Ph.D., F.I.M.A., F.S.S.; School of Mathematical Sciences; University of Bradford; Richmond Road, Bradford; West Yorkshire BD7 1DP ENGLAND. ; Imad Al-Mutwali

Computer software has been prepared to compute maximum likelihood estimates (MLE) for the parameters of a 2-parameter Weibull distribution using failure and survival time data. The procedure is the direct optimisation of the log-likelihood function by a method that evaluates the variance-covariance matrix of the estimates without a separate calculation of second derivatives.

Published in:

IEEE Transactions on Reliability  (Volume:R-30 ,  Issue: 4 )