Presenting at Mini-Elag 2021

We had the chance to present “Pubby”, our Front end for RDF-Data at Mini-Elag. It was an online conference, due to the ongoing pandemic situation. There were eleven interesting lighting talks, each between 5-10 minutes long. Elag is known for their conferences on the application of information technology in libraries and documentation centres. They discuss new technologies, to review on-going developments and to exchange best practices. We want to highlight a few of the talks we found particularly interesting.

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Exploring the JVMG knowledge graph

The JVMG project collects data from multiple sources and converts it into the RDF format. One of the core characteristics of this format is that all entities and attributes are represented as URIs, while the value of said attributes are either URIs (thus linking two entities using a property) or literal values.

The SPARQL language can then be used to formulate search queries on RDF stored in a database, but this requires the user to be both familiar with the query language as well as the structure of the RDF data.

As all entities and properties are identified by URIs, one way to explore RDF data is having a web server that serves the domain that the data URIs are residing in and shows all information that can be associated with a given URI.

This functionality is one of the main ideas of linked data: a linked data frontend can serve “raw” RDF data to programs that try to resolve an URI while human users using a browser to resolve the same URI get a human-readable HTML view of all the data that is associated with this URI.

Such a frontend also allows for simple exploration and navigation of a dataset, as all URIs in the human-readable view can be made into clickable links.

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