Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/56044
Authors: 
Prehn, Sören
Brümmer, Bernhard
Year of Publication: 
2012
Series/Report no.: 
Diskussionspapiere, Department für Agrarökonomie und Rurale Entwicklung 1202
Abstract: 
There has been an extensive discussion on the applicability of Poisson Pseudo Maximum Likelihood (PPML) to trade. Here, we are going to analyse again the performance of PPML but in the light of a bimodal distribution; in addition, we also explicitly account for excess zeros. Simulations are based on a Bernoulli-Gamma distribution (a zero-inflated Gamma distribution). Again, our results are a confirmation of how well-behaved PPML is in general.
Subjects: 
Poisson Pseudo Maximum Likelihood
excess zeros
zero-inflated Gamma Distribution
simulation
Document Type: 
Working Paper

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