---
license: cc0-1.0
language:
  - en
tags:
  - metadata
  - scholarly-communication
  - datacite
  - doi
  - enrichment
  - comet
pretty_name: COMET DataCite Enrichment Layer (Ingest Format)
size_categories:
  - 10M<n<100M
configs:
  - config_name: author_affiliations
    data_files:
      - split: train
        path: author_affiliations_enrichments_datacite_format.jsonl
    default: true
  - config_name: preprint_matching
    data_files:
      - split: train
        path: preprint_matching_enrichments_datacite_format.jsonl
  - config_name: resource_type
    data_files:
      - split: train
        path: resource_type_enrichments_datacite_format.jsonl
---

# COMET Enrichment Files - DataCite Enrichment Layer Ingest Format

This dataset contains metadata enrichment records in the [DataCite](https://datacite.org/) enrichment ingest format, produced by the [COMET](https://cometadata.org/) (Collaborative Metadata) initiative. Each record represents a single metadata enrichment to be applied to an existing DataCite record, identified by DOI.

The enrichments were generated against the February 2026 version of the [DataCite monthly data file](https://support.datacite.org/docs/datacite-monthly-data-file) using the [datacite-enrichment](https://github.com/cometadata/datacite-enrichment) tool.

## Dataset Configs

This dataset contains three configs (subsets), one for each enrichment type:

| Config | Records | Size | Description |
|--------|---------|------|-------------|
| `author_affiliations` | 8,963,119 | 8.8 GB | Institutional affiliation enrichments for creator records |
| `preprint_matching` | 812,958 | 526 MB | Links between arXiv preprints and their published versions |
| `resource_type` | 3,338,250 | 2.1 GB | Reclassifications of generic resource types to specific types |

## Record Schema

Each record is a JSON object with the following fields:

| Field | Type | Description |
|-------|------|-------------|
| `doi` | string | The DOI of the DataCite record to be enriched |
| `contributors` | array | Provenance: who produced this enrichment (COMET as Producer) |
| `resources` | array | Provenance: related project DOI and source dataset reference |
| `action` | string | The enrichment action: `insert`, `updateChild`, or `update` |
| `field` | string | The DataCite metadata field being enriched |
| `originalValue` | object | The original value being modified (present for `updateChild` and `update` actions) |
| `enrichedValue` | object | The new or updated value to apply |

## Config Details

### author_affiliations

Adds institutional affiliations to creator records on arXiv preprints registered in DataCite.

- **Action**: `updateChild` — finds and updates a specific creator within the `creators` array
- **Field**: `creators`
- **Source data**: [cometadata/arxiv-author-affiliations-matched-ror-ids](https://huggingface.co/datasets/cometadata/arxiv-author-affiliations-matched-ror-ids)
- **Project DOI**: [10.82461/160e-8q92](https://doi.org/10.82461/160e-8q92)

Example record:
```json
{
  "doi": "10.48550/arxiv.1109.4119",
  "contributors": [
    {"name": "COMET", "contributorType": "Producer", "nameType": "Organizational"}
  ],
  "resources": [
    {"relatedIdentifier": "http://doi.org/10.82461/160e-8q92", "relatedIdentifierType": "DOI", "relationType": "IsDocumentedBy", "resourceTypeGeneral": "Project"},
    {"relatedIdentifier": "https://huggingface.co/datasets/cometadata/arxiv-author-affiliations-matched-ror-ids", "relatedIdentifierType": "URL", "relationType": "IsDerivedFrom", "resourceTypeGeneral": "Dataset"}
  ],
  "action": "updateChild",
  "field": "creators",
  "originalValue": {
    "nameType": "Personal",
    "givenName": "Philip D.",
    "familyName": "Mannheim",
    "name": "Mannheim, Philip D."
  },
  "enrichedValue": {
    "nameType": "Personal",
    "givenName": "Philip D.",
    "familyName": "Mannheim",
    "name": "Mannheim, Philip D.",
    "affiliation": [
      {
        "name": "Department of Physics, University of Connecticut, Storrs, CT 06269, USA",
        "affiliationIdentifier": "https://ror.org/02der9h97",
        "affiliationIdentifierScheme": "ROR",
        "schemeUri": "https://ror.org"
      }
    ]
  }
}
```

### preprint_matching

Links arXiv preprints to their published versions by inserting `relatedIdentifiers` entries with the `IsVersionOf` relation type.

- **Action**: `insert` — appends a new entry to the `relatedIdentifiers` array
- **Field**: `relatedIdentifiers`
- **Source data**: [cometadata/arxiv-preprint-matching-results](https://huggingface.co/datasets/cometadata/arxiv-preprint-matching-results)
- **Project DOI**: [10.82461/m8a8-m211](https://doi.org/10.82461/m8a8-m211)

Example record:
```json
{
  "doi": "10.48550/arxiv.2302.11570",
  "contributors": [
    {"name": "COMET", "contributorType": "Producer", "nameType": "Organizational"}
  ],
  "resources": [
    {"relatedIdentifier": "10.82461/m8a8-m211", "relatedIdentifierType": "DOI", "relationType": "IsDocumentedBy", "resourceTypeGeneral": "Project"},
    {"relatedIdentifier": "https://huggingface.co/datasets/cometadata/arxiv-preprint-matching-results", "relatedIdentifierType": "DOI", "relationType": "IsDerivedFrom", "resourceTypeGeneral": "Dataset"}
  ],
  "action": "insert",
  "field": "relatedIdentifiers",
  "enrichedValue": {
    "relatedIdentifier": "10.58530/2024/0038",
    "relatedIdentifierType": "DOI",
    "relationType": "IsVersionOf"
  }
}
```

### resource_type

Reclassifies DataCite records that have a generic `resourceTypeGeneral` of "Text" to more specific types such as `JournalArticle`, `Preprint`, etc., based on procedural analysis.

- **Action**: `update` — replaces the entire `types` field
- **Field**: `types`
- **Source data**: [cometadata/datacite-procedural-resource-type-general-reclassifications](https://huggingface.co/datasets/cometadata/datacite-procedural-resource-type-general-reclassifications)
- **Project DOI**: [10.82461/bpzr-jd55](https://doi.org/10.82461/bpzr-jd55)

Example record:
```json
{
  "doi": "10.5281/zenodo.15414",
  "contributors": [
    {"name": "COMET", "contributorType": "Producer", "nameType": "Organizational"}
  ],
  "resources": [
    {"relatedIdentifier": "10.82461/bpzr-jd55", "relatedIdentifierType": "DOI", "relationType": "IsDocumentedBy", "resourceTypeGeneral": "Project"},
    {"relatedIdentifier": "https://huggingface.co/datasets/cometadata/datacite-procedural-resource-type-general-reclassifications", "relatedIdentifierType": "URL", "relationType": "IsDerivedFrom", "resourceTypeGeneral": "Dataset"}
  ],
  "action": "update",
  "field": "types",
  "originalValue": {"resourceTypeGeneral": "Text"},
  "enrichedValue": {"resourceTypeGeneral": "JournalArticle"}
}
```

## How These Files Were Generated

These enrichment records were produced using the [datacite-enrichment](https://github.com/cometadata/datacite-enrichment) tool, which:

1. Takes source enrichment data (from the datasets linked above) and a YAML configuration file defining field mappings, filters, and provenance metadata
2. Converts it to a standardized enrichment format using domain-specific transformers (one per enrichment type)
3. Produces records that carry full provenance tracking: contributor info (COMET as Producer), references to the source dataset and project DOI, and original/enriched values

The conversion was run against all files in the February 2026 version of the [DataCite monthly data file](https://support.datacite.org/docs/datacite-monthly-data-file).

## License

This dataset is released under [CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/).