Movielens 20M Dataset

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.

MovieLens 20M数据集（Movielens 20M）包含138493位用户在1995年1月9日至2015年3月31日期间，对27278部电影产生的约2000万条评分记录。每位用户可对单部电影给出1至5分的评分，其中1分代表最差评级，5分代表最优评级。本研究仅将评分高于2分的样本视为正向评分，并仅采用此类正向评分数据进行分析。