Prez

Prez is an open source, data-configurable, Linked Data API framework that delivers profiles of Knowledge Graph data according to the Content Negotiation by Profile standard.

We use Prez to deliver thematic views of data stored in Knowledge Graphs, for example, for the Geological Survey of Queensland, we support an instance of Prez configured to deliver business and scientific vocabularies, that is controlled lists of terms available in human- and machine-readable form.

Case Study: Prez for the Geological Survey of Queensland (GSQ)

This is an example of how we deploy Prez for organisations.

We deployed Prez for GSQ in 2019 to present a small number of scientific vocabularies that they were developing, such as Sample Preparation Methods.

Finding Prez easy to use, GSQ then characterised some of their administrative vocabularies, such as Transaction Status and presented them via Prez too.

GSQ continues to use Prez (see all their vocabs) and are currently establishing a reference spatial dataset - the Geological Features of Queensland which they will soon deliver as spatial data via Prez also.

For GSQ, Prez is easy to use, long-term reliable, and easily expandable for more classes of data.

We provide these services for Prez:

Modes

• shared instance
  • we host a single shared KurrawongAI Prez instance available for use when you only have a few vocabularies to add
• hosted instance
  • we can host and manage a Prez instance on your behalf
• deployed instance
  • we can deploy your own instance, within your own infrastructure
    for example: on-prem or in the cloud (Azure, AWS, OpenStack)

Support

For any of the above modes:

• theming
  • Prez is designed to be re-branded to match your organisation's needs and we can do that
  • see some branded instances: OGC, GSSA
• configuration
  • we can create custom profiles of data you deliver via Prez
  • we can also create RESTful endpoints for stored queries
• data creation
  • we can build data for your Prez instances from non-Knowledge Graph data
    for example: Excel files into vocabularies, File GeoDatabases into spatial Knowledge Graph data
• operations
  • for deployed instances, we can work with your staff to ensure it's running nicely
• training
  • we can train your staff to operate Prez
  • we can train your staff in the creation of your own data, custom profiles in Prez etc.
• interoperability
  • we can make your existing, or new, external systems work with Prez
  • Prez has a couple of standard APIs and we can work with those but it can also have new APIs and endpoints added
• extension
  • we wrote most of the Prez code so can extend it if needed!

Please see the KurrawongAI Docs page for Prez for use and developer documentation.

Case Study: PrezManifest for the ISO

This is an example of how PrezManifest is used by organisations.

The International Organization for Standardization (ISO) produces Semantic Web renditions of many of their standards' codelists which are published for them by the Open Geospatial Consortium (OGC) as part of a reference data Knowledge Graph known as the Rainbow, which is an instance of Prez.

Technical Committee 211 uses prezmanifest, our RDF data management application, to synchronise changes they make to their may codelists with the OGC's Rainbow.

This is easy for the ISO because prezmanifest containes automated validation and documentation tools.

This is efficient for the OGC because prezmanifest can synchronise parts of a Knowledge Graph with source data, without affecting unrelated parts.

Please contact us for Prez support!