TY JOUR TI On the generation of 12-channel electrocardiograms based on a hybrid of diffusion and graph neural network models KW generative models KW diffusion models KW electrocardiography KW graph neural networks KW transformers JO Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics AU Schetinin, E.Y. AU Pestryakova, A.. AU Shatalova, J.. AU Shevchuk, A.. PY 2026 IS 2026 PB Astrakhan State Technical University