Epinions

From TrustLet, a free, collaborative project for collecting and analyzing information about trust metrics.

Epinions is a website where people can review products. Users can register for free and start writing subjective reviews about many different types of items (software, music, television show, hardware, office appliances, ...). A peculiar characteristics of Epinions is that users are paid according to how much a review is found useful (Income Share program).

Also because of that, the attempts to game the systems are many and, as a possible fix, a trust system was put in place. Users can add other users to their "Web of Trust", i.e. “reviewers whose reviews and ratings they have consistently found to be valuable” and their "Block list", i.e. “authors whose reviews they find consistently offensive, inaccurate, or in general not valuable” ^{[1] [2] [3]}

[edit] Epinions dataset

We have collected and released 2 different versions of Epinions datasets:

1. Downloaded Epinions dataset
2. Extended Epinions dataset

[edit] Papers analyzing Epinions dataset

• Controversial users demand local trust metrics: an experimental study on epinions.com community
• Trust metrics on controversial users: balancing between tyranny of the majority and echo chambers
• Trust-aware Recommender Systems
• add another paper!

[edit] Notes

1. ↑ Epinions.com Web of Trust FAQ. http://www.epinions.com/help/faq/?show=faq_wot
2. ↑ Epinions' Trust concepts http://www.epinions.com/content_1370660996#TRUST_CONCEPTS
3. ↑ What is the Web of Trust? That is The Question. This opinion provides The Answer. Includes Bonus Section and Source Code link. http://www.epinions.com/content_4252409988