Tobias Käfer/en

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In my research, I connect the modelling of behaviour (eg. from Artificial Intelligence, Cognitive Systems, Business Process Modelling, and dynamical systems) with web technologies for semantic knowledge representation (Knowledge Graphs, RDF, OWL) and system interaction (HTTP). With this basis at hand, we can specify web agents, also called intelligent clients, which can automate things for you on the web, the Internet of Things, or in Industry 4.0. In the area of analytics, I investigate methods to analyse time series of semantically described data, e.g. the evolution of data on the Linked Data web.

Currently, I coordinate the COST Action 19134, a European network on the topic of Distributed Knowledge Graphs, I lead the AI part of KIGLIS, a BMBF-funded project on AI and the optical communication networks in a Smart City, TraPS, a project on decentralised Knowledge Graphs and the Blockchain for Supply Chains, and I am engaged in incentives for good research data management.

In terms of community service, I organise ATAC, a challenge on agents and Linked Data for the International Semantic Web Conference (ISWC 2021) and I serve on the organising committee for the 2020 and 2021 edition of the SEMANTiCS conference.


Find an overview on my publications here, on Google Scholar, and on DBLP.


Find some code I wrote on Github, where I publish Read-Write Linked Data (REST + Linked Data) intefaces to systems, IoT sensors and actuators, and services, besides code to harvest and process Linked Data.

Brief CV
Since 04/2021Deputy Professor
Since 02/2021Junior Research Group Leader for Knowledge Graph-based AI Systems
2019PostDoc in the research group Web Science
2018Defense of my PhD thesis entitled "Behaviour on Linked Data"
2014Research visit at Universidad de Chile
2013Researcher at Institute AIFB at Karlsruhe Institute of Technology (KIT)
2013Graduation in Industrial Engineering and Management from Karlsruhe Insitute of Technology (KIT) with the thesis "Network Analyses on Linked Data Graphs"
2011Research visit at DERI, Galway, Irland (now the Insight Centre for Data Analytics)

Active Projects

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Software Campus
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Research area
Semantic Technologies, Knowledge Representation And Reasoning, Information Systems, Agent Systems, Workflow Management, Big Data, Internet of Things, Artificial Intelligence, Data Science, Blockchain