Although high frequency diffusion data is nowadays available, common practice is still to only use yearly figures in order to get rid of seasonality. This paper proposes a diffusion model that captures seasonality in a way that naturally matches the overall S-shaped pattern. The model is based...

We propose a method to include seasonality in any diffusion model that has a closed-form solution. The resulting diffusion model captures seasonality in a way that naturally matches the original diffusion model's pattern. The method assumes that additional sales at seasonal peaks are drawn from...

This paper evaluates the Werk Loont ('Work Pays Off') program in the city of Rotterdam aimed at reducing the number of unemployed people claiming social assistance benefits. People are told about the program and the commitments it involves as soon as they apply for a benefit. Then a waiting...