openaire-graph-docs/docs/changelog.md

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# Versions & changelog

## Versioning

Our versioning policy follows the [Semantic Versioning specification](https://semver.org/). 
In our case, given a version `MAJOR.MINOR.PATCH`, we increment the:

* `MAJOR` version when the data model of the Graph changes
* `MINOR` version when the pipeline (e.g., different deduplication method, different implementation for an enrichment process) or major data sources change
* `PATCH` version when the graph data are updated

## Changelog

This section documents all notable changes for each graph version.

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### v6.0.0
_Start Date: 2023-07-03 • Release Date: 2023-07-17 • Dump release: **no**_

#### Added
- Citations imported from Crossref & MAG
- FoS and SDG classifications introduced for ~16Mi research products

#### Changed

- [Relationship data model](/data-model/relationships/relationship-object): flattened properties source, sourceType, target, targetType
- Removed the numerical prefix from the OpenAIRE identifiers (```"20|openorgs____::..." --> "openorgs____::..."```)
- Dataset file names in the Zenodo depositions changed from `dump` to `dataset`
- Crossref dump from May 2023
- ORCID works without a DOI from June 2023
- Usage counts from April 2023
- Datacite contents from June 2023
- OpenCitations relations from January 2023
- Deduplication of the datasource
- Avoid duplicated organisation PIDs

### v5.1.3
_Start Date: 2023-05-22 • Release Date: 2023-06-12 • Dump release: **no**_

#### Added
- Datasource and project level usage counts

#### Changed

- Crossref dump from April 2023
- ORCID works without a DOI from May 2023
- Usage counts from April 2023
- Datacite contents from May 2023
- OpenCitations relations from January 2023
- Deduplication of the datasource

### v5.1.2
_Start Date: 2023-03-20 • Release Date: 2023-04-04 • Dump release: **no**_

#### Changed

- Crossref dump from February 2023
- ORCID works without a DOI from March 2023
- Usage counts from February 2023 (+76% Downloads per Datasource for 2023)
- Datacite contents from mid March 2023
- OpenCitations relations from January 2023

### v5.1.1
_Start Date: 2023-02-13 • Release Date: 2023-03-01 • Dump release: **no**_

#### Added

- Revised SDG classification: improved coverage (+600K classified DOIs)
- General increase of the funded scientific outputs, thanks to the full text mining scanning new OpenAccess publications
- Integrated contents from
  - [EMBL-EBIs Protein Data Bank in Europe](/graph-production-workflow/aggregation/non-compatible-sources/ebi)
  - [UniProtKB/Swiss-Prot](/graph-production-workflow//aggregation/non-compatible-sources/uniprot)

#### Changed

- Crossref dump from January 2023
- ORCID works without a DOI from January 2023
- Usage counts from January 2023
- Datacite contents from mid February 2023
- OpenCitations relations from December 2022

### v5.1.0
_Start Date: 2023-01-16 • Release Date: 2023-01-30 • Dump release: **no**_

#### Added

- Revised SDG classification: better accuracy, lower coverage (will improve in the next months)

#### Changed

- Crossref dump from December 2022
- ORCID works without a DOI from January 2023
- Usage counts from December 2022
- DataCite contents from January 2023

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### v5.0.0

_Start Date: 2022-12-19 • Release Date: 2022-12-28 • Dump release: **yes**_

#### Added

- [Impact & Usage indicators](/data-model/entities/result#indicators) at the level of the Result
- [Beginner's kit](/downloads/beginners-kit) in the Downloads section
- New relationship types were introduced; see the complete list [here](/data-model/relationships/relationship-types)

#### Changed

- FOS and SDGs were removed from the [result subjects](/data-model/entities/result#subjects)
- Measures were removed from the [result instance](/data-model/entities/result#instance)
- Updated DOIBoost to include publications from Crossref and the works from ORCID with a DOI until November 2022
- Added ORCID works without a DOI from November 2022