Quantifying Reviewer Credibility in Online Tourism
With the growing interconnectedness of the world and advances in transportation and communication, more and more people are travelling as independent tourists, putting together their own itineraries and activities from information researched from social media. However, many reviewers post reviews without validation, leading to the explosive growth of reviews and the proliferation of uninformative, biased or even false information. This makes it very challenging for travellers to find credible reviews. Previous work has shown that credibility assessment of sources and messages are fundamentally interlinked. Hence, there has been much work on measuring the credibility of reviewers. However, most current work investigates the factors impacting the perception of reviewer credibility without quantitative evaluation. This paper presents a method that quantifies the credibility of reviewers in TripAdvisor. An Impact Index is proposed to measure reviewer credibility by evaluating the expertise and trustworthiness based on the number of reviews posted by the reviewer and the number of helpful votes received by the reviews. Furthermore, the Impact Index is improved into the Exposure-Impact Index by considering in addition the number of destinations on which the reviewer posted reviews. Our experimental results show that both Impact Index and Exposure-Impact Index outperform the state-of-the-art method in measuring the credibility of reviewers to help travellers search for credible reviews.
Keywordsreviewer credibility credible review tourism
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- 7.Flanagin, A.J., Metzger, M.J.: Digital Media and Youth: Unparalleled Opportunity and Unprecedented Responsibility. The John D. and Catherine T. MacArthur Foundation Series on Digital media and Learning, pp. 5–27. MIT Press, Cambridge (2008)Google Scholar
- 10.Gretzel, U., Yoo, K.H., Purifoy, M.: Online Travel Review Study: Role and Impact of Online Travel Reviews. Laboratory for Intelligent Systems in Tourism, Texas A&M University (2007)Google Scholar
- 12.Sidali, K.L., Schulze, H., Spiller, A.: The Impact of Online Reviews on the Choice of Holiday Accommodations. In: Information and Communication Technologies, pp. 87–98. Springer Wien, New York (2009)Google Scholar
- 13.Yoo, K.H., Lee, Y., Gretzel, U., Fesenmaier, D.R.: Trust in Travel-related Consumer Generated Media. In: Information and Communication Technologies in Tourism, pp. 49–60. Springer, New York (2009)Google Scholar
- 15.Hovland, C.I., Janis, I.L., Kelley, H.H.: Communication and Persuasion: Psychological Studies of Opinion Change. Yale University Press, New Haven (1953)Google Scholar
- 17.Fogg, B.J., Soohoo, C., Danielson, D.R., Marable, L., Stanford, J., Tauber, E.R.: How do Users Evaluate the Credibility of Web Sites? A Study with Over 2,500 Participants. In: Proceedings of the 2003 Conference on Designing for User Experiences, pp. 1–15 (2003)Google Scholar
- 20.Fogg, B.J., Tseng, H.: The Elements of Computer Credibility. In: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems: the CHI is the Limit, pp. 80–87 (1999)Google Scholar