I was professor for Computer Science at the Freie Universität Berlin and headed the group on Networked Information Systems. You can learn more about my scientific work in my Curriculum vitae, also downloadable as PDF. My ORCID iD is http://orcid.org/0000-0002-2091-389X and I have a Google scholar profile. Starting in 2016 I will work with more emphasis as an author in the fields of arts, fitness and others.

In recent years I worked in several companies that I founded or co-founded. Semantic technologies were made a business with our startup “Ontonym – passendes einfach finden”. Research oriented services such as conference organisations are provided by my spin-off is-research GmbH.

You can reach me best by mail at tolk@ag-nbi.de.