Dear All. It is my pleasure to announce that a fraudulent and blatantly plagiarized publication from July 2023, (allegedly) about the training of layered neural networks in time-dependent envrionments, has been retracted by the Editorial Office of *MDPI Applied Sciences*, at last. The retraction process took very long and communication was quite unpleasant. *Please see * *https://www.mdpi.com/2076-3417/14/2/476* <https://www.mdpi.com/2076-3417/14/2/476> *for details and links to the plagiarized original pieces of work. * Note that the term "overlap" in the retraction notice is way too polite in view of the brazen "cut-and-paste" approach of the "authors". They literally copy/pasted essentially all figures and equations from other sources. The text consists of non-sensical gibberish and contains no original results whatsoever. Four referees apparently failed to note the gobbledygook and recognize the plagiarism. Best wishes, Michael Biehl -- --------------------------------------------------- Prof. Dr. Michael Biehl Bernoulli Institute for Mathematics, Computer Science & Artificial Intelligence P.O. Box 407, 9700 AK Groningen, NL https://www.cs.rug.nl/~biehl m.biehl@rug.nl