We model the advertising competition between an incumbent and a new entrant in multiple independent markets after the new entrant suffers a demand-reducing shock. The incumbent is privately informed about the effect of the shock, and has incentive to signal the entrant its private information in...

We show that intermediate goods can be sourced to firms on the "outside" (that do not compete in the final product market), even when there are no economies of scale or cost advantages for these firms. What drives the phenomenon is that "inside" firms, by accepting such orders, incur the...

Mashup has emerged as a lightweight way to compose multiple web services and create value-added compositions. Facing the large amount of services, effective service recommendations are in great need. Service recommendations for mashup queries suffers from a mashup-side cold-start problem, and...