Gal Oestreicher-Singer

Learn More
The content industry has been undergoing a tremendous transformation in the last two decades. We focus in this paper on recent changes in the form of social computing. Although the content industry has implemented social computing to a large extent, it has done so from a techno-centric approach in which social features are viewed as complementary rather(More)
We use two computer programs for data collection. The first collects graph information and the second collects SalesRank information. Both use Amazon.com's XML data service. This service is part of the Amazon Web Services, which provide developers with direct access to Amazon's platform and databases. The program (crawler) which collects the graph starts at(More)
the Area Editor, and two anonymous reviewers for a number of helpful critiques and suggestions. Abstract Conventional wisdom suggests that network effects should drive faster market growth due to the bandwagon effect. However, as we show, network externalities may also create an initial slowdown effect on growth because potential customers wait for early(More)
O nline commercial interactions have increased dramatically over the last decade, leading to the emergence of networks that link the electronic commerce landing pages of related products to one another. Our paper conjectures that the explicit visibility of such " product networks " can alter demand spillovers across their constituent items. We test this(More)
Economic ecommerce networks are informative • Economic networks: generated by actions taken by (human) agents in commercial or economic situations • Contain information about complex consumer preferences and product characteristics that is explanatory/predictive Today's talk • Uses a component of Amazon's co-purchase network • (Weighted) PageRank: measures(More)
Many sites have recently begun to encourage user participation and provide consumers with a virtual community wherein the user can create an on-site identity, make friends, and interact with other consumers. We study the interplay between users' functional and social behavior on media sites and their willingness to pay for premium services. We use data from(More)
We define an economic network as a linked set of entities, where links are created by actual realizations of shared economic outcomes between entities. Such networks are becoming increasingly prevalent on the Internet, an example being the copurchase netwok on Amazon where entities are books and links designate which pairs were purchased simultaneously. Our(More)