The last decade has seen a dramatic increase in the popularity of product search engines, yet the analysis of consumer behavior at such sites remains a challenging research problem despite its timeliness and importance. In this article, we develop and estimate a copula model of evaluation set...

The battle between Microsoft and Google will shape how our society makes use of technology, computing, and information. It will determine which firm will shape and control the future of computing, and ultimately profit from it. This face-off pits a world of computing which the operating system...

The practice of sponsored search advertising - where advertisers pay a fee to appear alongside particularWeb search results - is now one of the largest and fastest growing source of revenue for Web search engines. We model and compare several mechanisms for allocating sponsored slots, including...