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MovieLens Data Sets





This data set contains 10000054 ratings and 95580 tags applied to 10681 movies by 71567 users of the online movie recommender service MovieLens.

Users were selected at random for inclusion. All users selected had rated at least 20 movies. Unlike previous MovieLens data sets, no demographic information is included. Each user is represented by an id, and no other information is provided.

The data are contained in three files, movies.dat, ratings.dat and tags.dat. Also included are scripts for generating subsets of the data to support five-fold cross-validation of rating predictions. More details about the contents and use of all these files follows.

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Neither the University of Minnesota nor any of the researchers

  involved can guarantee the correctness of the data, its suitability
  for any particular purpose, or the validity of results based on the
  use of the data set.  The data set may be used for any research
  purposes under the following conditions:

The user may not state or imply any endorsement from the
     University of Minnesota or the GroupLens Research Group.

The user must acknowledge the use of the data set in
     publications resulting from the use of the data set, and must
     send us an electronic or paper copy of those publications.

The user may not redistribute the data without separate

The user may not use this information for any commercial or
     revenue-bearing purposes without first obtaining permission
     from a faculty member of the GroupLens Research Project at the
     University of Minnesota.

The executable software scripts are provided "as is" without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The entire risk as to the quality and performance of them is with you. Should the program prove defective, you assume the cost of all necessary servicing, repair or correction.

In no event shall the University of Minnesota, its affiliates or employees be liable to you for any damages arising out of the use or inability to use these programs (including but not limited to loss of data or data being rendered inaccurate).

If you have any further questions or comments, please email grouplens-info