TY CONF TI PROCESSING OF LARGE-DIMENSIONAL STATISTICAL DATA ARRAYS WITH JUSTIFICATION OF THE CLUSTERING RULE KW data clustering KW statistical arrays KW least squares method KW spatial regression JO OPERATOR EQUATIONS AND SOME RELATED ISSUES IN APPLIED MATHEMATICS AU Kalach, A.V. AU Kovalchuk, A.A. AU Ryazhskikh, V.I. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov