less than 1 minute read

On Friday 12 September 2025 Martin Ledvinka held an Open Mic session with the topic "Semantics 2025 Review".

Abstract

Semantics 2025 was held in Vienna. Besides presenting TermIt at the Developers Workshop, we also attended the conference for one day. In this Open Mic session, we discuss two interesting presentations from the conference.

QLever

QLever is a SPARQL query engine written in C++ boasting impressive performance numbers compared to SPARQL engines that are a part of existing triple stores.

We discuss its pros and cons, especially w.r.t. our use cases.

Jelly

Jelly is an RDF binary serialization format and protocol designed for high performance and compression suitable for streaming scenarios.

We discuss its usability in scenarios with RDF4J and do a quick demo.

The presentation slides are available at this link.