Materials Data Facility portal

Dataset identity

Stable URI

https://data.stage.matportal.org/id/dataset/materials-data-facility-portal Open

Portal page

/datasets/materials-data-facility-portal Open

RDF Turtle

https://data.stage.matportal.org/data/dataset/materials-data-facility-portal.ttl Open

License

Dataset-specific CC-BY-4.0/CC0 signals

Publisher

Materials Data Facility

Published by

admin

Project

MDF

Version

Not specified

Identifier

materials-data-facility-portal

What is available here?

• A stable MatPortal dataset identifier and machine-readable metadata.
• Public source/documentation links for the external portal or repository.
• No MatPortal-hosted RDF graph, RDF resources, GraphRAG evidence, or SPARQL graph query yet.

Use the browse page sorted by RDF resources to find public datasets with named graphs, entity pages, SPARQL starters, and GraphRAG evidence.

Related ontologies and catalogue context

File preview

Preview metadata is available, but no preview rows were returned.

No public graph releases are available for this dataset yet.

RDF resources

Entity previews will appear after public graph indexing.

Ask this dataset with GraphRAG

GraphRAG searches MatPortal's public dataset metadata, named graph metadata, indexed RDF resources, and facts. It does not copy or vectorize every external file or raw distribution.

Clear

Ask a question above to get a graph-aware answer and a safe SPARQL starting point.

Indexed sources

• Dataset Metadata
• Distribution

Query this dataset

Use the guarded public SPARQL workbench with a dataset graph template. Only read-only SELECT queries with limits are accepted.

SELECT ?s ?p ?o WHERE { ?s ?p ?o } LIMIT 100

Open in SPARQL workbench

Graph-aware Q&A readiness

• Dataset Metadata
• Distribution

Dataset quality and readiness

Score

68%

Maturity

Review ready

Publication boundary

Public output is derived from reviewed public dataset/resource/graph metadata only.

Checks and recommendations

• Core metadata completeness
• Persistent identifier and citability
• License availability
• File, service, or access links
• Ontology and linked-data context
• Unit and quantity-kind validation
• Governance and review status

Dataset FAIR assessment

Overall FAIR score

65%

Assessment coverage

87% (Partial)

Principle scores

• F: 50%
• A: 100%
• I: 33%
• R: 88%

Profile / version

matportal-dataset-fair-v1 (v1.0.0)

Source revision

1784684835490005234-132416932

Source updated at

2026-06-14T01:46:17.230761Z

FAIR criterion details

Unit profile

{
  "valid": true,
  "score": 1.0,
  "checked_fields": [],
  "issues": [],
  "profile": "matportal-materials-qudt-lite-v1"
}

Machine access

• Dataset Turtle
• Dataset identifier
• Schema.org JSON-LD
• Catalogue JSON-LD
• Source / documentation

Raw public metadata

{
  "id": "dataset_461b3f8467cede61",
  "slug": "materials-data-facility-portal",
  "title": "Materials Data Facility portal",
  "description": "Materials Data Facility public portal/index for materials science datasets, including alloy, microscopy, and mechanical-property metadata. Imported metadata-only pending MDF API harvesting and dataset-level license review.",
  "license": "Dataset-specific CC-BY-4.0/CC0 signals",
  "creators": [
    "Materials Data Facility"
  ],
  "organization": "Materials Data Facility",
  "project": "MDF",
  "slice": "",
  "published_by": "admin",
  "groups": [
    "Materials datasets",
    "Registry"
  ],
  "keywords": [
    "materials",
    "MDF",
    "registry",
    "alloys",
    "microscopy",
    "mechanical properties"
  ],
  "tags": [
    "materials",
    "MDF",
    "registry",
    "alloys",
    "microscopy",
    "mechanical properties"
  ],
  "visibility": "public",
  "status": "published",
  "ontology_annotations": [
    "PMDCO"
  ],
  "categories": [
    "Metals & Alloys",
    "Characterization & Testing",
    "Computational Materials Science",
    "Manufacturing & Industry 4.0"
  ],
  "distributions": [
    {
      "title": "MDF portal",
      "filename": "materialsdatafacility.org",
      "description": "Materials Data Facility public portal/index for materials science datasets, including alloy, microscopy, and mechanical-property metadata. Imported metadata-only pending MDF API harvesting and dataset-level license review.",
      "visibility": "public",
      "status": "published",
      "media_type": "text/html",
      "format": "HTML",
      "checksum_sha256": "",
      "size_bytes": 0,
      "source_uri": "https://materialsdatafacility.org/",
      "download_url": "https://materialsdatafacility.org/",
      "access_url": "https://materialsdatafacility.org/",
      "uri": "https://datagraph.stage.matportal.org/id/distribution/materials-data-facility-portal/resource_d26d69ba001b5dd0",
      "url_type": "external",
      "rdf_format": null,
      "ontology_annotations": [],
      "data_dictionary": [],
      "views": [
        {
          "id": "",
          "title": "Download",
          "view_type": "download",
          "url": "",
          "embed_url": "",
          "embeddable": false,
          "description": "",
          "default": true,
          "config": {}
        }
      ],
      "datastore_active": false,
      "datastore_enabled": false,
      "has_views": true,
      "mapping_supported": false,
      "query_supported": false,
      "transform_provenance": {
        "was_derived_from": "https://materialsdatafacility.org/",
        "harvested_from": "GitHub public repository metadata",
        "metadata_only": true
      },
      "id": "resource_d26d69ba001b5dd0",
      "dataset_slug": "materials-data-facility-portal",
      "created_at": "2026-06-14T01:46:17.230761Z",
      "updated_at": "2026-06-14T01:46:17.230761Z"
    }
  ],
  "graph_ids": [],
  "entity_count": 0,
  "follower_count": 0,
  "contact_points": [],
  "publisher": "Materials Data Facility",
  "homepage": "https://materialsdatafacility.org/",
  "landing_page": "https://materialsdatafacility.org/",
  "release_date": "",
  "modification_date": "",
  "version": "",
  "version_notes": "",
  "identifier": "",
  "frequency": "",
  "provenance": "Curated public GitHub dataset/repository candidate discovered for MatPortal Data browse. Metadata-only import; no repository contents downloaded.",
  "dataset_type": "repository",
  "temporal_coverage": [],
  "temporal_resolution": "",
  "spatial_coverage": [],
  "spatial_resolution_meters": null,
  "access_rights": "",
  "other_identifiers": [],
  "theme": [
    "Materials informatics",
    "Data registry"
  ],
  "language": [
    "en"
  ],
  "documentation": [
    "https://materialsdatafacility.org/"
  ],
  "conforms_to": [],
  "is_referenced_by": [],
  "applicable_legislation": [],
  "has_version": [],
  "qualified_relations": [],
  "citation": "",
  "activity": [
    {
      "at": "2026-06-14T01:46:10.559180+00:00",
      "event": "dataset_created",
      "actor": "admin",
      "note": "Dataset registered in native DataGraph"
    },
    {
      "at": "2026-06-14T01:46:13.333217+00:00",
      "event": "dataset_imported",
      "actor": "admin",
      "note": "Imported/updated from curated public GitHub discovery."
    },
    {
      "at": "2026-06-14T01:46:17.230761+00:00",
      "event": "resource_added",
      "actor": "admin",
      "resource_id": "resource_d26d69ba001b5dd0",
      "note": "MDF portal"
    }
  ],
  "metadata": {
    "publisher": "",
    "published_by": "admin",
    "contact_points": [],
    "homepage": "",
    "landing_page": "",
    "release_date": "",
    "modification_date": "",
    "version": "",
    "version_notes": "",
    "identifier": "",
    "frequency": "",
    "provenance": "",
    "type": "",
    "temporal_coverage": "",
    "temporal_resolution": "",
    "spatial_coverage": "",
    "spatial_resolution_meters": "",
    "access_rights": "",
    "language": [],
    "documentation": [],
    "conforms_to": [],
    "is_referenced_by": [],
    "applicable_legislation": [],
    "has_version": [],
    "qualified_relation": [],
    "qualified_attribution": [],
    "extras": {}
  },
  "created_at": "2026-06-14T01:46:10.559180Z",
  "updated_at": "2026-06-14T01:46:17.230761Z"
}