The textbook describes the content of the course in the discipline "Theory of Information Processes and Systems," as well as additional materials in the disciplines "Decision Support Systems" and "Data Mining Technologies" in the direction of "Information Systems and Technologies," including the profile "Information Technologies in Transport" in accordance with GEF 3 + +. The main aspects of working with big data, methods and technologies "Big Data" and "Data Mining," as well as general methods of data mining are considered.