is input this is output and this is the hidden layer right you'll have a weight matrix here and you'll probably have some sort of nonlinear function and then you have another weight matrix here and they call them W and B another way to draw this is I have weight matrix going up then I have a nonlinear function going transforming this into this signal and then I have the be going back right so I'm drawing I'm drawing it in two different ways up here or over here and with the second way you can see that it is kind of a forward backward algorithm