NONINFORMATIVE PRIORS FOR DISPERSION MODELS

The present paper provides a Bayesian analysis of two-parameter disper sion models under noninformative priors. The focus is on first-and sec ond-order probability matching priors. Other noninformative priors, in cluding Jeffreys' and reference priors, are examined in the light of t hese criteria. For certain models some unique second-order probability matching priors are found which are different from either Jeffreys' o r reference priors.