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# Versions & changelog
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## Versioning
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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
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* `MINOR` version when the pipeline (e.g., different deduplication method, different implementation for an enrichment process) or major data sources change
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* `PATCH` version when the graph data are updated
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## Changelog
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This section documents all notable changes for each graph version. This page is going to replace the updates listed until the end of 2022 on the OpenAIRE website at https://www.openaire.eu/aggregation-and-content-provision-workflows
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### v5.1.0
- Process start date: 2023-01-16
- Public availability date: 2023-01-30
- Dump released: **no**
#### Added
- Revised SDG classification: better accuracy, lower coverage (will improve in the next months)
#### Changed
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- 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
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- Process start date: 2022-12-19
- Public availability date: 2022-12-28
- Dump released: **yes**
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#### Added
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- [Impact indicators ](/data-model/entities/result#indicators ) at the level of the Result
- [Beginner's kit ](/downloads/beginners-kit ) in the Downloads section
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- New relationship types were introduced; see the complete list [here ](/data-model/relationships#relationship-types )
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#### Changed
- FOS and SDGs were removed from the [result subjects ](/data-model/entities/result#subjects )
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- Measures were removed from the [result instance ](/data-model/entities/result#instance )
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- Updated DOIBoost to include publications from Crossref and the works from ORCID with a DOI until November 2022
- ORCID works without a DOI from November 2022
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