Economics Insights @ CBS

The diffusion of an innovation is governed by, among other things, word of mouth. In social systems, growth processes are considered strongly influenced by people who have large number of ties to other people. In the social network literature, such people are called influentials, opinion leaders, mavens, or sometimes hubs. Furthermore, when the marketing literature addresses such people, the focus is typically not on how they influence the overall market but rather on either assessing their influence on people they are in direct contact with or identifying their characteristics.

We develop a competitive pricing model which combines the complexity of time-varying demand and cost functions and that of scale economies arising from dynamic lot sizing costs. Each firm can replenish inventory in each of the T periods into which the planing horizon is partitioned. Fixed as well as variable procurement costs are incurred for each procurement order, along with inventory carrying costs. Each firm adopts, at the beginning of the planning horizon, a (single) price to be employed throughout the horizon.