# Metadata Source URL:: https://en.wikipedia.org/wiki/Backpropagation_through_time --- # Backpropagation through time - Wikipedia ## Highlights > [!quote]+ Updated on 290423_092344 > > Backpropagation through time (BPTT) is a gradient-based technique for training certain types of recurrent neural networks. It can be used to train Elman networks. The algorithm was independently derived by numerous researchers