Analysis of Trends in Authors Publication Activities

Publication activity of researchers is studied inmany papers. Most of them are focused on topics, authors and their cooperation, finding experts or so on. In our paper we are interested in trends in the authors publication activity. We would like to know when and how often authors use their topics, how they combine topics or use new topics. To achieve our goal we use formal concept analysis and polynomial approximation to realize how the authors use their topics and how they change their preferences over the time. Our dataset consists of several authors and their records extracted from DBLP. We use qualitative evaluation of our method on the selected twenty one authors.