I am professor for Computer Science at the Freie Universität Berlin and head the group on Networked Information Systems. you can learn more about my scientific work in my CV downloadable as PDF.

In recent years I also worked in several companies that I founded or co-founded. Semantic technologies are 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 by mail at tolk@ag-nbi.de, by phone at +49-30-838-75223 and by fax at +49-30-838-75220. Since I work halftime at Freie Universität Berlin, mail is the undisputed best way to contact me.

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