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| = CETAF ISTC Stable Identifier Initiative = | | = CETAF Information Science & Technology Commission (ISTC) = |
| CETAF Stable Identifiers are globally unique, consistent and reliable identifiers for specimens in natural and botanical collections. These identifiers are used in the world wide web to redirect users and systems to images, websites and metadata of the physical objects and to integrate them with the semantic web.
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| == How do CETAF Stable Identifier look like? ==
| | '''''Developing technical services for our community''''' |
| [[File:Stable identifier example.png|thumb|Example for the syntax of a CETAF Stable Identifier.]]
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| The CETAF identifier system is based on HTTP-URIs and Linked Data principles. It is simple and future-proof.
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| Each collection object as well as its associated information resources (e.g. multimedia, RDF, webpages) are identified by stable HTTP-URIs that will never change. The URI Syntax for the objects is chosen and maintained by the institution owning them. This flexibility is one of the main advantages of the CETAF Stable Identifier system as it allows e.g. to include branding and local scope identifiers into the CETAF Stable Identifier URI. There are however some [https://wiki.pro-ibiosphere.eu/wiki/Best_practices_for_stable_URIs best practices for stable URIs]. Examples are:
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| [http://herbarium.bgbm.org/object/B100277113 http://herbarium.bgbm.org/object/B100277113]
| | The Information Science & Technology Commission (ISTC) facilitates dialogue and collaboration between the IT departments of CETAF member and non-member institutions to ensure institutional interoperability through the development of common infrastructures and standards. The group works towards compatibility of components for digital information exchange and sharing, through procedural changes and adaptations to IT systems. |
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| [http://www.botanicalcollections.be/specimen/BR0000005516339 http://www.botanicalcollections.be/specimen/BR0000005516339] | | Members of the ISTC officially represent IT or Biodiversity Informatics departments of [https://cetaf.org/ CETAF] institutions. The group was established as a technical working group of the EU-funded project European Distributed Institute of Taxonomy ([https://cordis.europa.eu/project/id/18340 EDIT]) and was integrated into CETAF in 2011. |
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| [http://data.rbge.org.uk/herb/E00421509 http://data.rbge.org.uk/herb/E00421509] | | [[Meetings]]<br> |
| | | [[CETAF Stable Identifier Guide|CETAF IDs]]<br> |
| == How are CETAF Stable Identifiers resolved? ==
| | [[IIIF]]<br> |
| [[File:Resolving-cetaf-istc stable identifiers.png|thumb|Resolving URI-based collection identifiers using standard HTTP-redirection mechanisms.]] | | Research Data Management in CETAF member organisations<br> |
| A CETAF Stable Identifier allows the access of information about the corresponding collection object in various ways.
| | [[Storytelling with IndExs]] |
| If a human user tries to access a collection object by typing it’s CETAF Stable Identifier into a web-browser, he will be redirected to a human-readable representation (e.g. html web-page) of it.
| | == Subgroups == |
| If a software-system tries to access the collection object via the same identifier, it will be redirected to a machine-processable RDF-encoded metadata record. The identifier is therefore integrated with the semantic web and can also be used in other RDF representations to link to the belonging collection object.
| | Natural Science Collections and AI<br> |
| | | Subgroup "Collection Management Systems |
| == What can CETAF Stable Identifiers be used for? ==
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| As described above, CETAF Identifiers can first of all be used to redirect users and systems to images, websites and metadata of the physical objects they belong to.
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| They can also be used to precisely reference specimens needed in scientific studies and serve as basis for data retrieval, integration and reproducibility of data experiments.
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| Additionally, the stable identifiers enable new applications in the semantic web domain. An example for this is the Biology Pilot. The [https://www.bgbm.org/ Botanic Garden and Botanical Museum Berlin], [https://www.plantentuinmeise.be/en/home/ Meise Botanic Garden] and other collections annotated thousands of specimens with the [https://kiki.huh.harvard.edu/databases/botanist_index.html HUH] and [https://www.wikidata.org/wiki/Wikidata:Main_Page WikiData] IDs of their collectors. The CETAF Stable Identifiers of the annotated specimens are available on [https://www.gbif.org/ GBIF] and a server is crawling the identifiers to organize the RDF information in a Blaze Graph triple store. This graph enables us to search for specimen by their collector HUH or WikiData ID, which is invariant to the different spelling variants the individual institutions may be using. The query will return all relevant specimens available in the joined set of specimens regardless of their origin institution. If the number of institutions using stable identifiers grows and the amount of machine readable annotations increases, this technology could be used to basically create a “google for specimens”.
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| == How can I implement CETAF Stable Identifiers for my collection? ==
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| The CETAF Stable Identifiers can be implemented in three levels. They are described in detail [http://herbal.rbge.info/md.php?q=documentation here]. Following conditions have to be met to reach the corresponding implementation levels:
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| '''Level 1'''
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| * you assigned a stable URI to each object of your collection, which will be never changed and preferably follows the [https://wiki.pro-ibiosphere.eu/wiki/Best_practices_for_stable_URIs best practices for stable URIs]
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| * there exists a human-readable representation (web-page) for each of your collection objects
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| * a user trying to access a collection object by typing the stable URI of it into a web-browser will be redirected to the human-readable representation (web-page) of the object (you can test this by using the [http://herbal.rbge.info/search.php CETAF URI Tester])
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| '''Level 2'''
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| * you reached level 1
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| * there exists a machine-readable RDF metadata record for each of your collection objects
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| * a machine trying to access a collection object via its identifier with 'application/rdf+xml' header will be redirected to the objects machine-readable RDF metadata record (you can test this by using the [http://herbal.rbge.info/search.php CETAF URI Tester])
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| '''Level 3'''
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| * you reached level 2
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| * the machine-readable RDF metadata record of each of your collection objects encodes application specific data (e.g. is compliant to the [[CSPP|CETAF Specimen Preview Profile (CSPP)]])
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| == Useful Links ==
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| * [http://wiki.pro-ibiosphere.eu/wiki/Best_practices_for_stable_URIs Best practices for stable URIs]
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| * [[CSPP|CETAF Specimen Preview Profile (CSPP)]]
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| * [https://sourceforge.net/projects/stablecollectionidentifiers/ Source code and example documents]
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| * [http://herbal.rbge.info/ CETAF URI Tester]
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| == Further reading == | |
| * [http://www.pro-ibiosphere.eu/news/4296_stable_identifiers_for_specimens_-_a_cetaf_istc_initiative_supported_by_pro-ibiosphere/ Stable identifiers for specimens – A CETAF ISTC initiative supported by pro-iBiosphere]
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| * [https://academic.oup.com/database/article/3053443/Actionable, Paper in Database (Oxford) 2017 (1): Actionable, long-term stable and semantic web compatible identifiers for access to biological collection objects]
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| * [http://www.nature.com/nature/journal/v546/n7656/full/546033d.html?foxtrotcallback=true Paper in Nature 546, 33 (01 June 2017): Data management: Stable identifiers for collection specimens]
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| * [http://www.cetaf.org/sites/default/files/cetaf-istc_stable_identifiers_poster50x70.pdf Poster: CETAF stable identifiers for specimens]
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| == Meetings ==
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| * [http://stories.rbge.org.uk/archives/3846 Edinburgh Meeting (June 2013)]
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| * [http://wiki.pro-ibiosphere.eu/wiki/Workshop_Berlin_1:_How_to_improve_technical_cooperation_and_interoperability_at_the_e-infrastructure_level_Minutes Joint ISTC/pro-iBiosphere workshop Berlin (October 2013)]
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| * [[Geneva_meeting|Geneva Meeting (October 2015)]]
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| * [http://cetafdigitization.biowikifarm.net/cdig/ISTC_Meeting_Spring_2016_Bratislava#Minutes Joint CETAF-ISTC / CETAF-DWG meeting (May 2016) ]
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| * [http://cetafdigitization.biowikifarm.net/cdig/ISTC_Meeting_Spring_2017_Stuttgart Joint CETAF-ISTC / CETAF-DWG meeting (March 2017) ]
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| * [http://cetafidentifiers.biowikifarm.net/wiki/IDs_and_LOD_Discussion (Virtual) LOD Hackathon (October 2017)]
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| * [http://cetafdigitization.biowikifarm.net/cdig/ISTC_DWG_Meeting_Spring_2018_Copenhagen Joint CETAF-ISTC / CETAF-DWG meeting (February 2018) ]
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| * [https://cetafdigitization.biowikifarm.net/cdig/ISTC_QoS_Workshop_Copenhagen_2018 ISTC QoS Workshop Copenhagen (June 2018)]
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| * [https://cetafdigitization.biowikifarm.net/cdig/ISTC_DWG_Meeting_Spring_2019_Vienna Joint CETAF-ISTC / CETAF-DWG meeting (February 2019)]
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