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Trust prediction from user-item ratings

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Abstract

Trust relationships between users in various online communities are notoriously hard to model for computer scientists. It can be easily verified that trying to infer trust based on the social network alone is often inefficient. Therefore, the avenue we explore is applying Data Mining algorithms to unearth latent relationships and patterns from background data. In this paper, we focus on a case where the background data are user ratings for online product reviews. We consider as a testing ground a large dataset provided by Epinions.com that contains a trust network as well as user ratings for reviews on products from a wide range of categories. In order to predict trust we define and compute a critical set of features, which we show to be highly effective in providing the basis for trust predictions. Then, we show that state-of-the-art classifiers can do an impressive job in predicting trust based on our extracted features. For this, we employ a variety of measures to evaluate the classification based on these features. We show that by carefully collecting and synthesizing readily available background information, such as ratings for online reviews, one can accurately predict social links based on trust.

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Notes

  1. The features of ant8 were computed with μ = 5 and α = 0.1.

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Authors and Affiliations

  1. University of Victoria, 3800 Finnerty Road, Victoria, BC, V8P 5C2, Canada

    Nikolay Korovaiko & Alex Thomo

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  1. Nikolay Korovaiko
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  2. Alex Thomo
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Correspondence to Alex Thomo.

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Korovaiko, N., Thomo, A. Trust prediction from user-item ratings. Soc. Netw. Anal. Min. 3, 749–759 (2013). https://doi.org/10.1007/s13278-013-0122-z

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