Janos J. Sarbo is a researcher (retired) of the Institute for Computing and Information Systems, Radboud University, Nijmegen, The Netherlands. His research focuses on knowledge representation based on a theory of cognition and a Peircean theory of signs. In the past, he did research in various fields of computer science, including compiler construction, natural language parsing, and formal conceptual analysis. He is one of the authors of the book ""Knowledge in Formation - A Computational Theory of Interpretation"" (Springer, 2011).