Piotr graduated in computer science obtaining his MSc from the Rzeszów University of Technology. Currently, he is a research assistant and a PhD student at the Warsaw University of Technology. His research interests are with data mining and machine learning: discovering sequential patterns from spatio-temporal data, mining frequent itemsets, associative rules mining and associative classification, classification and regression models, spiking neural networks, time series processing, logical databases, clustering and their applications to such areas as air pollution prediction or crime incidents analysis.