The effect of extrinsic motivation on user behavior in a collaborative information finding system
Journal of the American Society for Information Science and Technology
Customer Referral Management: Optimal Reward Programs
Marketing Science
Understanding user behavior in online feedback reporting
Proceedings of the 8th ACM conference on Electronic commerce
Red Opal: product-feature scoring from reviews
Proceedings of the 8th ACM conference on Electronic commerce
When Online Reviews Meet Hyperdifferentiation: A Study of the Craft Beer Industry
Journal of Management Information Systems
Designing novel review ranking systems: predicting the usefulness and impact of reviews
Proceedings of the ninth international conference on Electronic commerce
Truthful opinions from the crowds
ACM SIGecom Exchanges
Do online reviews affect product sales? The role of reviewer characteristics and temporal effects
Information Technology and Management
WSKS '08 Proceedings of the 1st world summit on The Knowledge Society: Emerging Technologies and Information Systems for the Knowledge Society
Opinion Mining and Sentiment Analysis
Foundations and Trends in Information Retrieval
An integrative approach to assess qualitative and quantitative consumer feedback
Electronic Commerce Research
AMAZING: A sentiment mining and retrieval system
Expert Systems with Applications: An International Journal
WINE '08 Proceedings of the 4th International Workshop on Internet and Network Economics
How opinions are received by online communities: a case study on amazon.com helpfulness votes
Proceedings of the 18th international conference on World wide web
Evaluating brand value on the web
Proceedings of the 3rd workshop on Information credibility on the web
Mechanisms for making crowds truthful
Journal of Artificial Intelligence Research
Trust-Oriented Composite Service Selection and Discovery
ICSOC-ServiceWave '09 Proceedings of the 7th International Joint Conference on Service-Oriented Computing
Reporting incentives and biases in online review forums
ACM Transactions on the Web (TWEB)
Electronic Commerce Research and Applications
"Was it good? It was provocative." Learning the meaning of scalar adjectives
ACL '10 Proceedings of the 48th Annual Meeting of the Association for Computational Linguistics
Opinion formation under costly expression
ACM Transactions on Intelligent Systems and Technology (TIST)
A formal approach to investigate the performance of modern e-commerce services
ASMTA'10 Proceedings of the 17th international conference on Analytical and stochastic modeling techniques and applications
Fraud detection in online consumer reviews
Decision Support Systems
Strength of social influence in trust networks in product review sites
Proceedings of the fourth ACM international conference on Web search and data mining
A helpfulness modeling framework for electronic word-of-mouth on consumer opinion platforms
ACM Transactions on Intelligent Systems and Technology (TIST)
Synthesis of performance management mechanisms in modern e-commerce services
Proceedings of the 12th International Conference on Information Integration and Web-based Applications & Services
Informing decisions: how people use online rating information to make choices
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Integrating user feedback with heuristic security and privacy management systems
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
DESRIST'11 Proceedings of the 6th international conference on Service-oriented perspectives in design science research
Estimating sequential bias in online reviews: A Kalman filtering approach
Knowledge-Based Systems
mTrust: discerning multi-faceted trust in a connected world
Proceedings of the fifth ACM international conference on Web search and data mining
Distributed sensemaking: improving sensemaking by leveraging the efforts of previous users
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Electronic Commerce Research and Applications
Stakeholder interaction and internet auction outcomes: analyzing active disclosure
Proceedings of the 13th International Conference on Electronic Commerce
Extracting usability and user experience information from online user reviews
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
How to grow more pairs: suggesting review targets for comparison-friendly review ecosystems
Proceedings of the 22nd international conference on World Wide Web
Instant foodie: predicting expert ratings from grassroots
Proceedings of the 22nd ACM international conference on Conference on information & knowledge management
Computers in Human Behavior
Recommending additional study materials: binary ratings vis-à-vis five-star ratings
BCS-HCI '13 Proceedings of the 27th International BCS Human Computer Interaction Conference
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As a digital version of word-of-mouth, online review has become a major information source for consumers and has very important implications for a wide range of management activities. While some researchers focus their studies on the impact of online product review on sales, an important assumption remains unexamined, that is, can online product review reveal the true quality of the product? To test the validity of this key assumption, this paper first empirically tests the underlying distribution of online reviews with data from Amazon. The results show that 53% of the products have a bimodal and non-normal distribution. For these products, the average score does not necessarily reveal the product's true quality and may provide misleading recommendations. Then this paper derives an analytical model to explain when the mean can serve as a valid representation of a product's true quality, and discusses its implication on marketing practices.