Sarker, Rakhal; Surry, Yves R. - European Association of Agricultural Economists - EAAE - 2002
Since the early 1990s, researchers have routinely used count data models (such as the Poisson and negative binomial) to … second group of models relied on the use of the generalised Poisson probability distribution. All these alternative count … they seem to perform as well as the conventional negative binomial model and better than the Poisson specification. However …