Flixsterd dataset. Alchemy - Open Source AI. Epinions datasets - Trust metrics wiki - Trustlet. From Trust metrics wiki - Trustlet, a free, collaborative project for collecting and analyzing information about trust metrics.
The datasets derived from Epinions are available here for other researchers investigations. If you use one of these datasets and you appreciate my effort in collecting and releasing them, please cite my paper Trust-aware Bootstrapping of Recommender Systems (see below) or another of my papers analyzing Epinions, thanks! --Paolo Massa 09:25, 15 February 2011 (PST) MovieLens. GroupLens Research has collected and made available rating data sets from the MovieLens web site ( The data sets were collected over various periods of time, depending on the size of the set.
Before using these data sets, please review their README files for the usage licenses and other details. Help our research lab: Please take a short survey about the MovieLens datasets MovieLens 100K Dataset. Webscope from Yahoo! Labs.