Professor Wes Johnson
University of California
Professor Wes Johnson, from the University of California, is one of the world’s top Bayesian statisticians.
He visited the Camden campus in December and February, August 2006 to work with the Farm Animal & Veterinary Public Health group developing Bayesian models for estimating animal level prevalence from pooled faecal culture (PFC) results, a technique currently used in Australia for diagnosis of ovine Johne’s disease (OJD)
Professor Johnson also conducted a seminar where recent advances in nonparametric approaches to survival data were discussed, in particular, a model that allows survival curves to cross, possibly due to a toxic treatment effect resulting in early deaths but which is ultimately effective as a treatment and used as illustration a cancer clinical trial.