Change the Biobank model to be compliant with MIABIS

[svituz]

MIABIS aims to standardize data elements used to describe biobanks, research on samples, and associated data.
It defines, general attributes to describe biobanks and sample collections at an aggregated/metadata level.
The model of EJPRD can represent the biobank Resource to be compliant with the MIABIS concepts and attributes.
The current EJPRD model uses a customized term from the EJPRD vocabulary for a Biobank Resource (ejprd:Biobank). To be compliant with MIABIS I propose to adopt obib ontology to denote the concepts.

The list of changes I propose to make the model compliant with MIABIS, is the following:

• Replace the ejp:Biobank entity to be a dcat:Resource (so it fits in the DCAT model) and obo:OBIB_0000616 (obib:biobank). The term from OBIB will make the concept to be compatible with MIABIS collection.
• Change dct:publisher object of the Biobank (i.e. the current :organisationShape) with the following changes:
  • add type obo:OBIB_0000623 (obib:biobank_organization) to specify it is a Biobank Organization as defined by MIABIS. It will be both a foaf:Organization and an obib:biobank_organization
  • add the obo:OBIB_0000732 (obib:owns) that relates the biobank to the obib:biobank. This may not be strictly necessary (there is already the dct:publisher ) but it better defines the nature of the link between the biobank organization and its collections as defined by MIABIS.
  • add the obo:RO_0000053 (obo:has_charasteristic) predicate to specify the Legal Entity of the Organization. This field, which may be optional, is used to model the "Juristic Person" attribute of a Biobank Organization in MIABIS. Since there is no specific property for this, I propose a generic predicate that links to an object of type obo:OMRSE_00000038 (obo:legal_entity).

The changes can be seen in the PR #39