Kandel, Shmuel; McCulloch, Robert; Stambaugh, Robert F - In: Review of Financial Studies 8 (1995) 1, pp. 1-53
A Bayesian approach is used to investigate a sample's information about a portfolio's degree of inefficiency. With standard diffuse priors, posterior distributions for measures of portfolio inefficiency can concentrate well away from values consistent with efficiency, even when the portfolio is...