Weibull Likelihod function.
For a log-likelihood, just sum values of dweibull(x, log=TRUE)
On Wed, 6 Aug 2008, rkevinburton at charter.net wrote:
Is there a likelihod function for the Weibull distribution in 'R'? I found the following reference: http://www.weibull.com/LifeDataWeb/weibull_log_likelihood_functions_and_their_partials.htm But I had a hard time understanding the parameters required Particularly 'number of groups of times-to-failure data points", "number of groups of suspension data points", and "number of interval failure data groups". Maybe if there is a likelihood function within 'R' the documentation will be a little better and contain some examples. I would like the likelihood function for some Bayesian inference and the Weibull distribution seems to closely resemble my prior data distribution. Thank you. Kevin
Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595