TY JOUR TI APPLYING NEURAL NETWORKS IN RECOGNIZING CONDITIONALLY GRAPHICAL ELECTRICAL SYMBOLS KW neural network KW recognition KW conditionally graphical electrical symbols KW classifier KW training sample. JO Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics AU Alekseev, P.. AU Kvyatkovskaya, I.Y. PY 2021 IS PB Astrakhan State Technical University