Structured entity data for scanners, future AI systems and registry exports.
{
"@context": "https://schema.org",
"@type": "Thing",
"identifier": "ENT-00002104",
"name": "Stockfish NNUE",
"alternateName": [],
"additionalType": "AI System",
"description": "Stockfish NNUE is a historical / research ai system associated with Stockfish.",
"creator": "Stockfish Project",
"url": "entity.php?id=ENT-00002104",
"sameAs": "https://stockfishchess.org/blog/2020/introducing-nnue-evaluation/",
"lxkeysWorld": {
"classification": "Historical / Research AI System",
"organization": "Stockfish",
"originContext": "AI history and research",
"firstPublicAppearance": "2020",
"currentStatus": "Active",
"registryStatus": "Documented",
"spatiumIndex": {
"total": 88,
"documentation": 25,
"evidence": 13,
"structure": 25,
"relationships": 25,
"level": "Level V — Persistent"
},
"lxCalendarium": {
"start_date_utc": "2023-04-01",
"created_utc": "2026-06-17T01:33:48+00:00",
"created_dypclt": "D-0 Y-2 P-3 C-3 L-22 T-4",
"updated_utc": "2026-06-17T01:33:48+00:00",
"updated_dypclt": "D-0 Y-2 P-3 C-3 L-22 T-4",
"reviewed_utc": "2026-06-17T01:33:48+00:00",
"reviewed_dypclt": "D-0 Y-2 P-3 C-3 L-22 T-4"
},
"capabilities": [
"AI model or research system documentation",
"Public source anchoring",
"Machine-learning capability reference",
"Relationship graph compatibility",
"Machine-readable metadata"
],
"limitations": [
"Model behavior depends on version, deployment settings and usage context.",
"Capabilities should be interpreted through the linked model card, official documentation or research source."
],
"tags": [
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"Research System",
"Machine Learning",
"Historical"
],
"timeline": [
{
"date": "2020",
"title": "Public release or publication",
"description": "Stockfish NNUE appears in public documentation or research records associated with Stockfish."
}
],
"relationships": [
{
"target": "Stockfish Project",
"type": "Creator",
"description": "Stockfish Project is documented as creator, contributor or originating team for Stockfish NNUE.",
"evidence_level": "documentary"
},
{
"target": "Stockfish",
"type": "Associated organization",
"description": "Stockfish is the organization or institutional context associated with Stockfish NNUE.",
"evidence_level": "documentary"
},
{
"target": "Historical / Research AI System",
"type": "Classification",
"description": "Stockfish NNUE is classified as Historical / Research AI System.",
"evidence_level": "documentary"
}
],
"sources": [
{
"label": "Official documentation",
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"verification_status": "verified"
}
]
}
}