TY CONF TI METRICS AND METHODOLOGY FOR COMPARATIVE EVALUATION OF THE EFFECTIVENESS OF PERSONALIZED RECOMMENDER SYSTEM ALGORITHMS KW recommender systems KW evaluation metrics KW cross-validation KW cold start KW comparative analysis JO MODERN APPROACHES TO MODELING INFORMATION SYSTEMS – 2026 AU Zlobin, E.A. AU Kravchenko, A.S. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov