Expression of Concern: Towards Autonomous Optical Fiber Networks: High-Precision EDFA Gain and Spectral Response Prediction via Hybrid CNN-LSTM Deep Learning. Mesopotamian Journal of Big Data, [S. l.], v. 2026, p. 11–11, 2026. DOI: 10.58496/MJBD/2026/011. Disponível em: https://journals.mesopotamian.press/index.php/bigdata/article/view/1058. Acesso em: 5 mar. 2026.