Movielens 20M Dataset

Published: 25 February 2018| Version 5 | DOI: 10.17632/n6sjkpy87f.5
Khushnood Abbas


Movielens 20M contains about 20 million rating records of 27,278 movies rated by 138493 users between 09 January,1995 to 31 March 2015 . Each user has rated a movie from 1 to 5, where 1 being the worst and 5 is the best. In this study we have considered only positive ratings we have considered higher than 2 as positive rating.


Steps to reproduce

I have randomly selected 10,000 unique users and all the movies rated by them. Further, I have changed the time when the user rated the movie into days. The day we have counted from the time we have data, i.e. 9 January, 1995. I have normalized the user id and item id. Data after cleaning process Movielens 20M: 10,000 users, 16433 items and 1.2 × 106 links


University of Electronic Science and Technology of China - Qingshuihe Campus


Applied Sciences, Data Mining, Applied Computing, Big Data