My research concept is to alternate between research perspectives centered around modeling.

Since October 2014 I am working on a DFG funded research project “Opinion Dynamics and Collective Decision: Procedures, Behavior and Systems Dynamics”.

Expertise

Research Topics: processes of opinion formation, processes of decision making, aggregation of the wisdom of crowds, rating systems, voting systems, consensus algorithms, swarms, cascades on networks, systemic risk, social cohesion
Tools: modeling and simulation, large scale data analysis, experiments, mathematical and statistical analysis
Mathematical fields: nonnegative matrices, inhomogeneous Markov chains, repeated application of means, positive dynamical systems, multiplicative and additive stochastic processes
General scientific interests: game theory, mathematics and politics, socio- and econo-physics, complex systems, network theory