Internet Shopping Agents (ISAs) allow consumers to costlessly search many online retailers and buy at the lowest price. One would expect these ISAs to subject sellers to intense price competition that results in uniform low prices. Yet, Internet retailers have joined these ISAs. Furthermore, the...

Online reverse auctions generate real-time bidding data that could be used via appropriate statistical estimation to assist the corporate buyer's procurement decision. To this end, we develop a method, called BidAnalyzer, which estimates dynamic bidding models and selects the most appropriate of...

This paper examines a market where the provision of information service is costly, but information service has the characteristics of a public good. Consumers, on the other hand, can use the information service to make an informed purchase decision and derive higher utility from consuming their...

This paper presents the results of an experiment performed to test the properties of an innovative bargaining mechanism (called automated negotiation) used to resolve disputes arising from Internetbased transactions. Automated negotiation is an online sealed-bid process in which an automated...

We study the online contagion of exogenous demand shocks generated by book reviews featured on the Oprah Winfrey TV show and published in the New York Times, through the co-purchase recommendation network on Amazon.com. These exogenous events may ripple through and affect the demand for a...

In this article, contrary to popular belief, it is argued on the basis of transaction cost economics that consumers will become subcontractors on electronic markets. The effects of this tendency counter the benefits that might accrue to them as a result of product differentiation and price...

This paper discusses the sustainability impact (contribution to sustainability, reduction of adverse environmental impacts) of online second-hand trading. A survey of eBay users shows that a relationship between the trading of used goods and the protection of natural resources is hardly...

This is the specification for the Power Trading Agent Competition for 2011 (Power TAC 2011). Agents are simulations of electrical power brokers, who must compete with each other for both power production and consumption, and manage their portfolios.

The data used in the paper and the sources of information studied, show regaining of the positions and the role of travel agencies in the distribution system of tourism. The main trends and special features of the European on-line tourist market have been analyzed, as well as the state of the...