TY CONF TI A MODEL FOR ASSESSING USER ENGAGEMENT IN AN INFORMATION SYSTEM BASED ON THE ANALYSIS OF BEHAVIORAL METRICS AND GAMIFICATION ALGORITHMS KW user engagement KW gamification KW behavioral metrics KW mathematical model KW simulation KW optimization KW information system JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES – 2026 AU Kondusova, V.V. AU Tyunina, A.M. AU Kukueva, D.S. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov