Working Paper CeDER-06-02, New York University The Dimensions of Reputation in Electronic Markets
mag(2008)
摘要
We analyze how different dimensions of a seller’s reputation affect pricing power in electronic markets. We do so by using text mining techniques to identify and structure dimensions of importance from feedback posted on reputation systems, by aggregating and scoring these dimensions based on the sentiment they contain, and using them to estimate a series of econometric models associating reputation with price premiums. We find that different dimensions do indeed affect pricing power differentially, and that a negative reputation hurts more than a positive one helps on some dimensions but not on others. We provide the first evidence that sellers of identical products in electronic markets differentiate themselves based on a distinguishing dimension of strength, and that buyers vary in the relative importance they place on different fulfilment characteristics. We highlight the importance of textual reputation feedback further by demonstrating it substantially improves the performance of a classifier we have trained to predict future sales. This paper is the first study that integrates econometric, text mining and predictive modeling techniques toward a more complete analysis of the information captured by reputation systems, and it presents new evidence of the importance of their effective and judicious design.
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关键词
econometrics,electronic commerce,internet,reputation,panel data,ecommerce,opinion mining,text mining
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