Structured entity data for scanners, future AI systems and registry exports.
{
"@context": "https://schema.org",
"@type": "Thing",
"identifier": "ENT-00002739",
"name": "Last.fm Dataset",
"alternateName": [],
"additionalType": "Dataset",
"description": "Last.fm Dataset is a recommendation / user behavior dataset associated with Last.fm / HetRec.",
"creator": "Last.fm / HetRec",
"url": "entity.php?id=ENT-00002739",
"sameAs": "https://grouplens.org/datasets/hetrec-2011/",
"lxkeysWorld": {
"classification": "Recommendation / User Behavior Dataset",
"organization": "Last.fm / HetRec",
"originContext": "Recommendation systems and behavioral data",
"firstPublicAppearance": "2011",
"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": "2011",
"title": "Public release or documentation",
"description": "Last.fm Dataset appears in public documentation, project records, benchmark descriptions or research references associated with Last.fm / HetRec."
}
],
"relationships": [
{
"target": "Last.fm / HetRec",
"type": "Associated organization",
"description": "Last.fm / HetRec is the organization, project community or institutional context associated with Last.fm Dataset.",
"evidence_level": "documentary"
},
{
"target": "Recommendation systems and behavioral data",
"type": "Domain context",
"description": "Last.fm Dataset 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/hetrec-2011/",
"source_type": "Primary / Reference Source",
"verification_status": "verified"
}
]
}
}