TY CONF TI APPLYING GRAPH THEORY TO SOCIAL CONNECTION ANALYSIS: HOW MATHEMATICS HELPS US UNDERSTAND COMMUNITIES KW Graph KW graph model KW metrics KW algorithm JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES – 2026 AU Pokachalov, N.I. AU Avilova, O.A. AU Buchnev, S.O. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov