The CLARIN Concept Registry (CCR) forms the basis of the semantic interoperability layer of CLARIN, especially in the context of metadata, i.e., the Component MetaData Infrastructure (CMDI). It does so by offering a collection of concepts, identifiable by their persistent identifiers, relevant for the domain of language resources.
Go to the CLARIN Concept Registry
About
Access
The Concept Registry can be accessed by anyone using a read-only facetted browser or via the search facilities of the CMDI Component Registry. Adding new concepts or changing existing ones can only be done by the national CCR coordinators. If you have such a request you should contact your national coordinator or, in case your country has not assigned one yet, send your request to ccr [at] clarin.eu (ccr[at]clarin[dot]eu). The coordinators will then discuss the request and get in touch with you about the handling of it.
History
In the past the concept registry role was taken by ISOcat, which was the ISO TC37 Data Category Registry (DCR) created in 2008 as one of the first ISO standards delivered in the form of a database (ISOcat). The Max Planck Institute for Psycholinguistics (MPI) has provided development, hosting, and support services and acted as the Registration Authority (RA). The use of the DCR by various communities, including CLARIN, has grown over the years. Feedback from users, coupled with changes in ISO standardization procedures, necessitated a review of the system and operational framework with an aim towards improving usability (see this LREC 2014 paper and this TKE 2014 paper).
In line with these insights and MPI's renewed focus on institute research, the MPI stopped being the RA and hosting provider in December 2014. For CLARIN users the Meertens Institute hosts the new CLARIN Concept Registry (CCR). This registry contains the relevant concepts (based on the corresponding ISOcat data categories), such as those used by CMDI. The CCR has a less complex data model than ISOcat, and is also a closed registry, i.e., only the national CCR-coordinators are able to input and edit (new) concepts.
Migration
Early February 2015 the Component Registry has been updated to use the CCR instead of ISOcat. The ISOcat2CCR tool and mapping files that supported this update is available for download and can be used to also update other resources to use CCR handles instead of ISOcat PIDs.
Learn More
For further information or feedback relating to the CLARIN Concept Registry send an email to ccr [at] clarin.eu (subject: CCR%3A%20) (ccr[at]clarin[dot]eu).