Under the practice of “digital co-op”, manufacturers subsidize the online advertising expenditures of retailers that they sell their products through, even though retailers typically compete with manufacturers in the advertising market and appropriate a share of the manufacturers' channel...

We address a critical question that many firms are facing in this era of "big data'': Can customer data be stored and analyzed in an easy-to-manage and scalable manner without significantly compromising the inferences that can be made about the customers' transaction activity? We address this...