Ralf Wagner is the dean of the Department of Business and Economics at the University of Kassel and has held the position of a professor at that faculty since 2006. Previously, he held a position of an assistant professor at the Bielefeld University in Germany, where he received his PhD in 2000 and the second doctorate (Habilitation) in 2008. Ralf served as visiting professor at the Academy of National Economy in Moscow, the International Business School at the University of Vilnius in Lithuania, the Nankai University in China, and the University of Information Technology and Management in Rzeszow in Poland. His research focuses on interactive marketing, social network mining as well as competitive intelligence and innovative measurement procedures. Ralf is one of the founders of Scholz-Wagner-Partners Consultants in Bielefeld, Germany. His consulting experience covers international retailers and distance selling companies as well as service providers and FMCG producers. Ralf serves as department editor Marketing of the Operations Research Spectrum and has published more than 80 refereed articles and book chapters. Learn more at