ENT-00002984 · Dataset

OPUS Corpus

OPUS Corpus is a language dataset / benchmark associated with OPUS project.

Level V — PersistentActiveDocumented

Human readable record

Overview

OPUS Corpus is a documented language dataset or benchmark. It is recorded as parallel corpora collection, supporting evaluation or training for question answering, reasoning, dialogue, classification, translation or multilingual language understanding.

Timeline

2004Public release or documentation
OPUS Corpus appears in public documentation, project records, benchmark descriptions or research references associated with OPUS project.

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 OPUS Corpus. 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

DatasetNLPBenchmarkLanguage Understanding

Relationship graph

OPUS Corpus

Associated organizationOPUS project

OPUS project is the organization, project community or institutional context associated with OPUS Corpus.

Domain contextLanguage model evaluation and NLP data

OPUS Corpus belongs to the Language model evaluation and NLP 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-00002984",
    "name": "OPUS Corpus",
    "alternateName": [],
    "additionalType": "Dataset",
    "description": "OPUS Corpus is a language dataset / benchmark associated with OPUS project.",
    "creator": "OPUS project",
    "url": "entity.php?id=ENT-00002984",
    "sameAs": "https://opus.nlpl.eu/",
    "lxkeysWorld": {
        "classification": "Language Dataset / Benchmark",
        "organization": "OPUS project",
        "originContext": "Language model evaluation and NLP data",
        "firstPublicAppearance": "2004",
        "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",
            "NLP",
            "Benchmark",
            "Language Understanding"
        ],
        "timeline": [
            {
                "date": "2004",
                "title": "Public release or documentation",
                "description": "OPUS Corpus appears in public documentation, project records, benchmark descriptions or research references associated with OPUS project."
            }
        ],
        "relationships": [
            {
                "target": "OPUS project",
                "type": "Associated organization",
                "description": "OPUS project is the organization, project community or institutional context associated with OPUS Corpus.",
                "evidence_level": "documentary"
            },
            {
                "target": "Language model evaluation and NLP data",
                "type": "Domain context",
                "description": "OPUS Corpus belongs to the Language model evaluation and NLP data layer of the intelligent-entity registry.",
                "evidence_level": "documentary"
            }
        ],
        "sources": [
            {
                "label": "Official or reference source",
                "url": "https://opus.nlpl.eu/",
                "source_type": "Primary / Reference Source",
                "verification_status": "verified"
            }
        ]
    }
}

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