A NONHOMOGENEOUS NONUNIFORM INFLUENCE MODEL OF INNOVATION DIFFUSION

A model of innovation diffusion which gives unequal weightage to the a dopters of different temporal stages and captures commonly observed up s and downs in new product diffusion is proposed. It is shown that our model possesses features of the existing flexible diffusion models an d shows better fit which is indicated by the values of R(adj)2, mean a bsolute deviation, and mean percentage error and estimates a larger ma rket potential, M. It has an interesting feature of conversion factors , first increasing then vanishing, much before we approach market satu ration, implying that there is a scope of new thrust in converting rem aining potential adopters.