TY JOUR TI CLUSTER-BASED ASSORTMENT OPTIMIZATION STRATEGIES IN FMCG: AN EMPIRICAL ASSESSMENT OF IMPACT ON PROFITABILITY (EBITDA) AND LOSSES IN RUSSIAN RETAIL CHAINS VITALIY BORISOVICH KOLOMIETS KW FMCG retail KW cluster analysis KW dynamic clustering KW assortment optimization KW losses management KW fresh produce (FRESH) KW operational efficiency KW EBITDA KW refrigerated display cases KW A/B testing KW empirical research KW Russian retail chains JO JOURNAL OF MONETARY ECONOMICS AND MANAGEMENT AU Kolomiets, V.B. PY 2025 IS 0 PB ITBO University