TY JOUR TI BASIC CLASSIFIERS OF FORMAL CLASSIFICATION THEORY OF TECHNICAL SYSTEMS: HIERARCHIES, VECTORS AND MATRICES, BANDS KW technical systems KW classification KW formal theory KW energy objects KW classification attribute KW interpretation area KW range of values JO Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics AU Fedorova, N.V. PY 2021 IS PB Astrakhan State Technical University