TY JOUR TI Eliminating the uncertainty of the Hurst indicator in relation to the regression sign of economic or biometric data in small samples KW small samples KW empirical Hurst index KW regression sign KW neural network KW neuron KW statistical criterion JO Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics AU Tarasov, D.. AU Ivanov, A.. AU Ermakova, A.. PY 2025 IS 2025 PB Astrakhan State Technical University