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• Semantic Media Wiki (SMW) is the knowledge Knowledge Management system.  https://www.semantic-mediawiki.org/wiki/Semantic_MediaWiki
• The Comprehensive Knowledge Archive Network (CKAN) is the data repository 

Here are a presentation slides that describe the overall approach and the System design

A short Demo of the system (Focus on the Data repository)

• repository. https://ckan.org/

4. RDM characteristics and methods

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• CKAN is a ready-to-use data repository. You can just install it and manage your datasets. However, not enough for RDM. The general extra steps to be taken are:
  
  • We need to link our data to the contextual concepts that we implemented in SMW before. Like linking your dataset to the corresponding machine/device that generated it. Example extension developed by Lab LSK: ckanext-Semantic-Media-Wiki
    • Note: you do not have to make a link from CKAN to SMW and vice-versa at the same time. A one-way link is enough. The direction is your choice. 
  • Identifying other contextual metadata for your dataset in CKAN. It is true that we have linked our data to the context in SMW. But there are some other contextual metadata that are not in SMW (They should not be).
    • For example, what is the publication related to this dataset? For instance, Lab LSK developed a plugin for linking publication(s) to your dataset: ckanext-Dataset-Reference
    • You can also define some custom metadata for your dataset in ckan by extending the CKAN schema. Example from Lab LSK (plugin crc1153_dcat_ap): https://github.com/TIBHannover/ckanext-crc1153
      
      • Scenario: let's say your dataset has domain-specific metadata named 'Temperature'. CKAN does not support this and as a result, you need to extend the CKAN schema. 
  • Here we also need to annotate our data. CKAN provides the possibility to export your dataset metadata in RDF format based on DCAT https://github.com/ckan/ckanext-dcat
  • However, just exporting in DCAT format is not enough!
    • DCAT only describes your dataset in a general context. What about those contexts that you added in the previous steps?
    • Solution: Extend DCAT to add your domain metadata (your custom annotation). An example from lab LSK (plugin crc1153_dcat_ap): https://github.com/TIBHannover/ckanext-crc1153
    • Where to find these annotations? Terminology Services. TIB already has one: https://terminology.tib.eu/ts
    • What if I cannot find a proper annotation? Contribution. You can develop your own vocabulary for your specific domain. Benefit? people in your domain will use it.

Here are presentation slides that describe the overall approach and the System design

A short Demo of the system (Focus on the Data repository)

Systems Endpoints:

CRC 1153:
CKAN: https://service.tib.eu/sfb1153/ckan/
SMW: https://service.tib.eu/sfb1153/wiki/Main_Page

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