The multinomial logit model (MNL) is one of the most frequently used statistical models in marketing applications. It allows to relate an unordered categorical response variable, for example representing the choice of a brand, to a vector of covariates such as the price of the brand or variables...

Attraction models used to analyse the effects of marketing instruments on market share hitherto assume certain strict functional forms. We introduce semiparametric models whose parametric components are equivalent to an exponential or multiplicative function. The nonparametric part is estimated...