Julian Szymański is a professor at Gdańsk University of Technology. His research interests are in thedomain of cognitive science and information retrieval where he develops algorithms to more accurately extract information from text. At this moment he is working on the methods of semantic document categorization. The results of the research are used to organize knowledge in Wikipedia. He also works in the area of intelligent signal processing for IoT data and blockchain technology. Andrzej Sobecki works at Gdansk University of Technology Faculty of Electronics, Telecommunications and Informatics, Department of Computer Architecture His research interests concern the blockchain technology and its applications especially in healthcare. Actually his research is focused on medical data acquisition and processing. Based on the textual description I perform classification of the patient and prepare prediction for him. Besides the research in data analysis, he is involved in the project of creating intelligent queue of patients in order to minimize waste of resources. I’m also involved in process of creating and deploying the national Anti-plagiarism system. Stanisław Barański is a phd student at Gdansk University of Technology Faculty of Electronics, Telecommunications and Informatics. His research interests are in the area of cryptography and applications of blockchain technology.