ENT-00002734 · Dataset

MovieLens 20M

MovieLens 20M is a recommendation / user behavior dataset associated with GroupLens.

Level V — PersistentActiveDocumented

Human readable record

Overview

MovieLens 20M is a documented recommendation or user-behavior dataset. It is recorded as movie recommendation dataset and supports experiments in collaborative filtering, ranking, personalization or recommender-system evaluation.

Timeline

2015Public release or documentation
MovieLens 20M appears in public documentation, project records, benchmark descriptions or research references associated with GroupLens.

Capabilities

Dataset referenceBenchmark or training-data contextTask-level documentationModel evaluation supportSource-based traceability

Known limitations

Dataset coverage, licensing, annotation quality and benchmark relevance depend on the source version and use context.Performance claims should be assessed through models evaluated on the dataset rather than inferred from the dataset alone.

Technical and registry detail

Technical description

Structured record for MovieLens 20M. The technical layer identifies the entity type, classification, creator or organization, official source anchor, capabilities, limitations, timeline entries and graph relationships without adding internal import events to the public history.

Controlled tags

DatasetRecommendation SystemsBehavioral DataBenchmark

Relationship graph

MovieLens 20M

Associated organizationGroupLens

GroupLens is the organization, project community or institutional context associated with MovieLens 20M.

Domain contextRecommendation systems and behavioral data

MovieLens 20M belongs to the Recommendation systems and behavioral data layer of the intelligent-entity registry.

Machine readable layer

Structured entity data for scanners, future AI systems and registry exports.

{
    "@context": "https://schema.org",
    "@type": "Thing",
    "identifier": "ENT-00002734",
    "name": "MovieLens 20M",
    "alternateName": [],
    "additionalType": "Dataset",
    "description": "MovieLens 20M is a recommendation / user behavior dataset associated with GroupLens.",
    "creator": "GroupLens",
    "url": "entity.php?id=ENT-00002734",
    "sameAs": "https://grouplens.org/datasets/movielens/20m/",
    "lxkeysWorld": {
        "classification": "Recommendation / User Behavior Dataset",
        "organization": "GroupLens",
        "originContext": "Recommendation systems and behavioral data",
        "firstPublicAppearance": "2015",
        "currentStatus": "Active",
        "registryStatus": "Documented",
        "spatiumIndex": {
            "total": 82,
            "documentation": 25,
            "evidence": 13,
            "structure": 25,
            "relationships": 19,
            "level": "Level V — Persistent"
        },
        "lxCalendarium": {
            "start_date_utc": "2023-04-01",
            "created_utc": "2026-06-17T01:48:33+00:00",
            "created_dypclt": "D-0 Y-2 P-3 C-3 L-22 T-4",
            "updated_utc": "2026-06-17T01:48:33+00:00",
            "updated_dypclt": "D-0 Y-2 P-3 C-3 L-22 T-4",
            "reviewed_utc": "2026-06-17T01:48:33+00:00",
            "reviewed_dypclt": "D-0 Y-2 P-3 C-3 L-22 T-4"
        },
        "capabilities": [
            "Dataset reference",
            "Benchmark or training-data context",
            "Task-level documentation",
            "Model evaluation support",
            "Source-based traceability"
        ],
        "limitations": [
            "Dataset coverage, licensing, annotation quality and benchmark relevance depend on the source version and use context.",
            "Performance claims should be assessed through models evaluated on the dataset rather than inferred from the dataset alone."
        ],
        "tags": [
            "Dataset",
            "Recommendation Systems",
            "Behavioral Data",
            "Benchmark"
        ],
        "timeline": [
            {
                "date": "2015",
                "title": "Public release or documentation",
                "description": "MovieLens 20M appears in public documentation, project records, benchmark descriptions or research references associated with GroupLens."
            }
        ],
        "relationships": [
            {
                "target": "GroupLens",
                "type": "Associated organization",
                "description": "GroupLens is the organization, project community or institutional context associated with MovieLens 20M.",
                "evidence_level": "documentary"
            },
            {
                "target": "Recommendation systems and behavioral data",
                "type": "Domain context",
                "description": "MovieLens 20M belongs to the Recommendation systems and behavioral data layer of the intelligent-entity registry.",
                "evidence_level": "documentary"
            }
        ],
        "sources": [
            {
                "label": "Official or reference dataset page",
                "url": "https://grouplens.org/datasets/movielens/20m/",
                "source_type": "Primary / Reference Source",
                "verification_status": "verified"
            }
        ]
    }
}

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