How many samples?: a Bayesian nonparametric approach
Stephen Graham Walker · Journal of the Royal Statistical Society Series D (The Statistician) · 2003
Summary. The paper considers a Bayesian nonparametric decision theoretic approach to sample size calculations, where the ultimate goal is to make a terminal action from a finite set of actions. This terminal action is made via the maximization of expected utility, the maximization being made with respect to a probability measure on the states of nature. The probability measure depends on the amount of information, i.e. the number of samples collected. It is the prior in the case of no samples and the posterior when samples have been taken.