MovieLense {recommenderlab} | R Documentation |
The 100k MovieLense ratings data set. The data was collected through the MovieLens web site (movielens.umn.edu) during the seven-month period from September 19th, 1997 through April 22nd, 1998. The data set contains about 100,000 ratings (1-5) from 943 users on 1664 movies.
data(MovieLense)
The format is an object of class "realRatingMatrix"
GroupLens Research, http://www.grouplens.org/node/73
Herlocker, J., Konstan, J., Borchers, A., Riedl, J.. An Algorithmic Framework for Performing Collaborative Filtering. Proceedings of the 1999 Conference on Research and Development in Information Retrieval. Aug. 1999.
data(MovieLense) MovieLense ## visualize part of the matrix image(MovieLense[1:100,1:100]) ## number of ratings per user hist(rowCounts(MovieLense)) ## number of ratings per movie hist(colCounts(MovieLense)) ## mean rating (averaged over users) mean(rowMeans(MovieLense))