For a log-likelihood, just sum values of dweibull(x, log=TRUE)
On Wed, 6 Aug 2008, [EMAIL PROTECTED] 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, [EMAIL PROTECTED] 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 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
