Aghina, W.B.

diffusion model country parameter estimate internet access forecasting estimation internet innovation value process marketing ia diffusion model forecast observation approach access procedure penetration product noise putsi state method research influence table result equation error measurement diffusion process adaptive diffusion processes diffusion models telephony forecasting performance number diffusion model vector sweden household european study performance adopters country i van everdingen luxembourg introduction process noise / intern distribution dekimpe cross-country ceiling system market european union mahajan effect adoption population netherland figure percentage marketing science application time t product diffusion models science filter matrix penetration ceiling measurement noise population i appendix change greece