Movielens

Overview

Dataset name: Movielens
Latest version: 1m
Available versions: 100k, 1m, 20m
Source: https://grouplens.org/datasets/movielens/

The MovieLens datasets are a collection of movie ratings data collected by the GroupLens Research project at the University of Minnesota.

Citation

@article{DBLP:journals/tiis/HarperK16,
author       = {F. Maxwell Harper and
                Joseph A. Konstan},
title        = {The MovieLens Datasets: History and Context},
journal      = {{ACM} Trans. Interact. Intell. Syst.},
volume       = {5},
number       = {4},
pages        = {19:1--19:19},
year         = {2016}
}

Version: 1m

Data Sources

Name	Source type	Archive	URL	Checksum
ml1m_zip	HttpSource	zip	https://files.grouplens.org/datasets/movielens/ml-1m.zip	md5:c4d9eecfca2ab87c1945afe126590906

Resources

ratings

Type: interactions
Format: transactions_tabular
Required: yes
Source: ml1m_zip
Filename: ratings.dat

Schema

sep: '::'
user_col: 0
item_col: 1
rating_col: 2
timestamp_col: 3
engine: python

movies

Type: content
Source: ml1m_zip
Filename: movies.dat
About: items

users

Type: content
Source: ml1m_zip
Filename: users.dat
About: users

Dataset Characteristics

Computed at: 2025-12-15

Metric	Value
n_users	6040
n_items	3706
n_interactions	1000209
space_size	4.731198579641315
space_size_log	0.6749711768020052
shape	1.6297895304910954
shape_log	0.21213152363825302
density	0.044683625622312845
density_log	-1.34985159554118
gini_item	0.6335616301416965
gini_user	0.5286242435264804
ratings_per_user	165.5975165562914
ratings_per_item	269.88909875876953

License & Usage

Please refer to the official dataset page for licensing and usage restrictions. https://grouplens.org/datasets/movielens/