TY JOUR TI IDENTIFICATION OF PARAMETERS OF THE CLUSTER PIECEWISE LINEAR REGRESSION FUNCTION OF LEONTIEV BY THE METHOD OF LEAST MODULES KW LEONTIEF CLUSTER PIECEWISE LINEAR REGRESSION MODEL KW LEAST ABSOLUTE VALUES METHOD KW LINEAR BOOLEAN PROGRAMMING PROBLEM KW APPROXIMATION QUALITY KW AVERAGE PERCENTAGE ERROR KW CEMENT PRODUCTION JO Herald of Technological University AU Noskov, S.I. AU Belyaev, S.V. PY 2025 IS 28 PB Kazan National Research Technological University