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: 100k

Data Sources

Name	Source type	Archive	URL	Checksum
ml100k_zip	HttpSource	zip	https://files.grouplens.org/datasets/movielens/ml-100k.zip	md5:0e33842e24a9c977be4e0107933c0723

Resources

ratings

Type: interactions
Format: transactions_tabular
Required: yes
Source: ml100k_zip
Filename: u.data

Schema

sep: "\t"
user_col: 0
item_col: 1
rating_col: 2
timestamp_col: 3

genre

Type: content
Source: ml100k_zip
Filename: u.genre
About: items

info

Type: content
Source: ml100k_zip
Filename: u.info
About: items

item

Type: content
Source: ml100k_zip
Filename: u.item
About: items

occupation

Type: content
Source: ml100k_zip
Filename: u.occupation
About: users

Dataset Characteristics

Computed at: 2025-12-15

Metric	Value
n_users	943
n_items	1682
n_interactions	100000
space_size	1.2594149435352908
space_size_log	0.10016884209961084
shape	0.56064209274673
shape_log	-0.251314298724565
density	0.06304669364224531
density_log	-1.2003376841992217
gini_item	0.628999631391201
gini_user	0.47190850477200424
ratings_per_user	106.04453870625663
ratings_per_item	59.45303210463734

License & Usage

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