Månsson, Kristofer; Shukur, Ghazi - Handelns Utredningsinstitut (HUI Research) - 2010
The standard statistical method for analyzing count data is the Poisson regression model, which is usually estimated using maximum likelihood (ML). The ML method is very sensitive to multicollinearity. Therefore, we present a new Poisson ridge regression estimator (PRR) as a remedy to the...