ZANG Jie, Doctor, Associate Professor, Master Supervisor. I am one of the excellent young teachers of Liaoning University and excellent keynote teachers of Liaoning University. The main lecturer courses are Database Principle, Optimization Theory and Methods, etc. My research direction is optimization theory and methods, and my research interests are operations research and big data. I have published nearly 20 papers in domestic and foreign journals, presided over 3 provincial projects and participated in more than 10 national projects.