Dataset
Alexandria PBEsol Complete Database
Database of ground-state properties of 3D materials computed using Density Functional Theory with the PBEsol functional. Complements PBE datasets with distinct exchange-correlation treatment.
Metadata-only record
This entry is a public catalogue pointer: it links to an external website or repository, but no RDF graph/entities have been published in MatPortal yet. Browse graph-rich public records to explore RDF resources, SPARQL, and GraphRAG features.
Dataset identity
- Stable URI
-
https://data.stage.matportal.org/id/dataset/alexandria-pbesol-completeOpen - Portal page
-
/datasets/alexandria-pbesol-completeOpen - RDF Turtle
-
https://data.stage.matportal.org/data/dataset/alexandria-pbesol-complete.ttlOpen - License
- CC BY 4.0
- Publisher
- Alexandria Project
- Published by
- admin
- Project
- Not assigned
- Version
- 2025.07
- Identifier
- https://alexandria.icams.rub.de/
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
Files & access
1 file/access itemAlexandria PBEsol 3D Directory Index
Directory index containing sharded json.bz2 files for the complete PBEsol database
File preview
Preview metadata is available, but no preview rows were returned.
Named graphs
Query this dataNo 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.
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
- 76%
- 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
- 93% (Partial)
- Principle scores
-
- F: 88%
- A: 100%
- I: 17%
- R: 63%
- Profile / version
- matportal-dataset-fair-v1 (v1.0.0)
- Source revision
- 1784684835490005234-132416932
- Source updated at
- 2026-07-21T17:40:09.889510Z
FAIR criterion details
PARTIAL [F1] Unique and Persistent Identifier
Reason: Identifier is defined but uses a non-persistent URL structure.
Evidence:
- Translation missing: en.dataset_fair_detail.criteria.F1.partial.evidence
Missing/needed:
- Translation missing: en.dataset_fair_detail.criteria.F1.partial.missing
Score: 50%
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: identifier, other_identifiers)
PASS [F2] Rich Descriptive Metadata
Reason: All core descriptive metadata fields are populated.
Evidence:
- Translation missing: en.dataset_fair_detail.criteria.F2.pass.evidence
- Description field is populated
- Creators field has entries
- Publisher or Organization is populated
Score: 100%
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: title, description, creators, publisher, organization)
PASS [F3] Metadata Identifier Linkage
Reason: Metadata contains the identifier of the described dataset distributions.
Evidence:
- Translation missing: en.dataset_fair_detail.criteria.F3.pass.evidence
Score: 100%
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: identifier, distributions)
PASS [F4] Searchable Catalogue Indexing
Reason: Dataset is registered in the public searchable catalogue.
Evidence:
- Translation missing: en.dataset_fair_detail.criteria.F4.pass.evidence
Score: 100%
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: visibility, status)
PASS [A1] Retrievability Protocol
Reason: Distributions are defined for standard protocol retrievability.
Evidence:
- Translation missing: en.dataset_fair_detail.criteria.A1.pass.evidence
Score: 100%
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: distributions)
PASS [A1.1] Open Communication Protocol Scheme
Reason: All distribution access paths conform to standard open protocol schemes.
Evidence:
- Translation missing: en.dataset_fair_detail.criteria.A1_1.pass.evidence
Score: 100%
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: distributions)
NOT APPLICABLE [A1.2] Authorization Protocol Metadata
Reason: This criterion is not applicable for open public resources.
This criterion is not applicable.
Evidence:
- Translation missing: en.dataset_fair_detail.criteria.A1_2.not_applicable.evidence
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: access_rights, distributions)
UNAVAILABLE [A2] Metadata Persistence Tombstone Policy
Reason: Metadata retention policy is currently unavailable.
Evidence:
- Translation missing: en.dataset_fair_detail.criteria.A2.unavailable.evidence
Missing/needed:
- Translation missing: en.dataset_fair_detail.criteria.A2.unavailable.missing
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0
PARTIAL [I1] Formal Knowledge Language representation
Reason: Dataset is metadata-only with standard machine-readable metadata representations.
Evidence:
- Translation missing: en.dataset_fair_detail.criteria.I1.partial.evidence
Missing/needed:
- Translation missing: en.dataset_fair_detail.criteria.I1.partial.missing
Score: 50%
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: graph_ids, distributions)
FAIL [I2] FAIR Vocabulary References
Reason: No ontology annotations or standards conforms_to references are present.
Missing/needed:
- Translation missing: en.dataset_fair_detail.criteria.I2.fail.missing
- conforms_to standards references
Score: 0%
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: ontology_annotations, conforms_to)
FAIL [I3] Qualified References and Relations
Reason: No qualified relations or external citations are defined.
Missing/needed:
- Translation missing: en.dataset_fair_detail.criteria.I3.fail.missing
- other_identifiers / is_referenced_by
Score: 0%
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: qualified_relations, other_identifiers, is_referenced_by)
PASS [R1] Descriptive Attributes Plurality
Reason: Plurality of attributes is sufficient.
Evidence:
- Translation missing: en.dataset_fair_detail.criteria.R1.pass.evidence
- Author attribution fields are populated
- Tags/keywords metadata is present
Score: 100%
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: title, description, creators, keywords, tags)
PASS [R1.1] Clear Usage License
Reason: A valid data usage license is specified.
Evidence:
- Translation missing: en.dataset_fair_detail.criteria.R1_1.pass.evidence
Score: 100%
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: license)
PARTIAL [R1.2] Detailed Provenance Metadata
Reason: Provenance metadata is partially specified.
Evidence:
- Translation missing: en.dataset_fair_detail.criteria.R1_2.partial.evidence
Missing/needed:
- Translation missing: en.dataset_fair_detail.criteria.R1_2.partial.missing
Score: 50%
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: provenance, distributions)
FAIL [R1.3] Domain Community Standards Conformance
Reason: No standard conformances or term URIs are specified.
Missing/needed:
- Translation missing: en.dataset_fair_detail.criteria.R1_3.fail.missing
- Data dictionary ontology term / unit URIs
Score: 0%
Provenance: Profile: matportal-dataset-fair-criterion-v1, v1.0.0 (fields: conforms_to, distributions, ontology_annotations)
Unit profile
{
"valid": true,
"score": 1.0,
"checked_fields": [],
"issues": [],
"profile": "matportal-materials-qudt-lite-v1"
}
Semantic dataset passport
- Passport ID
- alexandria-pbesol-complete
- DCAT
- https://datagraph.stage.matportal.org/id/dataset/alexandria-pbesol-complete
- Review status
- published
Semantic mirror manifest
{
"@context": {
"dcterms": "http://purl.org/dc/terms/",
"dcat": "http://www.w3.org/ns/dcat#",
"prov": "http://www.w3.org/ns/prov#",
"matportal": "https://w3id.org/matportal/schema#"
},
"id": "https://datagraph.stage.matportal.org/api/v1/datasets/alexandria-pbesol-complete/mirror-package",
"type": "matportal:SemanticMirrorPackage",
"dataset": "https://datagraph.stage.matportal.org/datasets/alexandria-pbesol-complete",
"dataset_slug": "alexandria-pbesol-complete",
"generated_at": "2026-08-11T19:33:22.653362+00:00",
"raw_data_policy": "linked-only; no raw data copied by this package",
"publication_boundary": "review artefact; downstream data-space publication remains governed",
"contains": [
"dcat-jsonld",
"datacite-style-metadata",
"ro-crate-metadata",
"ckan-package-json",
"edc-asset-json",
"aas-submodel-semantic-ids",
"sssom-mapping-snapshot",
"shacl-shape-scaffold",
"review-record"
],
"counts": {
"resources": 1,
"graphs": 0,
"indexed_entities": 0,
"mappings": 0,
"unit_fields_checked": 0
},
"source_authority": "MatPortal dataset metadata and linked external providers remain authoritative; connector cards preserve source links."
}
Material identity crosswalk
No public material identity crosswalk entries are linked to this dataset yet.
Machine access
Raw public metadata
{
"id": "dataset_157891482759cb5f",
"slug": "alexandria-pbesol-complete",
"title": "Alexandria PBEsol Complete Database",
"description": "Database of ground-state properties of 3D materials computed using Density Functional Theory with the PBEsol functional. Complements PBE datasets with distinct exchange-correlation treatment.",
"license": "CC BY 4.0",
"creators": [
"Alexandria Project",
"ICAMS Ruhr University Bochum"
],
"organization": "ICAMS",
"project": "",
"slice": "",
"published_by": "admin",
"groups": [],
"keywords": [
"DFT",
"PBEsol",
"crystal structures",
"high-throughput",
"convex hull"
],
"tags": [
"DFT",
"PBEsol",
"crystal structures",
"high-throughput",
"convex hull"
],
"visibility": "public",
"status": "published",
"ontology_annotations": [],
"categories": [
"Computational Materials Science"
],
"distributions": [
{
"title": "Alexandria PBEsol 3D Directory Index",
"filename": "pbesol-complete",
"description": "Directory index containing sharded json.bz2 files for the complete PBEsol database",
"visibility": "public",
"status": "published",
"media_type": "text/html",
"format": "JSON",
"checksum_sha256": "",
"size_bytes": 0,
"source_uri": "https://alexandria.icams.rub.de/data/pbesol/",
"download_url": "https://alexandria.icams.rub.de/data/pbesol/",
"access_url": "https://alexandria.icams.rub.de/data/pbesol/",
"uri": "https://datagraph.stage.matportal.org/id/distribution/alexandria-pbesol-complete/resource_4ee844d638348450",
"url_type": "external",
"rdf_format": null,
"ontology_annotations": [],
"data_dictionary": [],
"views": [
{
"id": "",
"title": "Download",
"view_type": "download",
"url": "",
"embed_url": "",
"embeddable": false,
"description": "",
"default": false,
"config": {}
}
],
"datastore_active": false,
"datastore_enabled": false,
"has_views": false,
"mapping_supported": false,
"query_supported": false,
"transform_provenance": {},
"id": "resource_4ee844d638348450",
"dataset_slug": "alexandria-pbesol-complete",
"created_at": "2026-07-21T17:40:09.889510Z",
"updated_at": "2026-07-21T17:40:09.889510Z"
}
],
"graph_ids": [],
"entity_count": 0,
"follower_count": 0,
"contact_points": [],
"publisher": "Alexandria Project",
"homepage": "https://alexandria.icams.rub.de/",
"landing_page": "https://alexandria.icams.rub.de/datasets.html",
"release_date": "2025-07-02",
"modification_date": "",
"version": "2025.07",
"version_notes": "",
"identifier": "https://alexandria.icams.rub.de/",
"frequency": "",
"provenance": "Metadata imported for MatPortal. Directory index containing sharded json.bz2 database files.",
"dataset_type": "dataset",
"temporal_coverage": [],
"temporal_resolution": "",
"spatial_coverage": [],
"spatial_resolution_meters": null,
"access_rights": "open-access",
"other_identifiers": [],
"theme": [],
"language": [
"en"
],
"documentation": [
"https://alexandria.icams.rub.de/datasets.html"
],
"conforms_to": [],
"is_referenced_by": [],
"applicable_legislation": [],
"has_version": [],
"qualified_relations": [],
"citation": "Schmidt, J. et al. (2021). The Alexandria database of machine-learning-ready datasets. ICAMS, Ruhr University Bochum.",
"activity": [],
"metadata": {
"publisher": "",
"published_by": "",
"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": "2026-07-21T17:40:09.889510Z",
"updated_at": "2026-07-21T17:40:09.889510Z"
}