What is "epoch" in keras.models.Model.fit? Is it one gradient update? If it is more than one gradient update, then what is defining an epoch?
Suppose I am feeding my own batches to fit. I would regard "epoch" as finishing to process entire training set (is this correct)? Then how to control keras for this way? Can I set batch_size equal to x and y size and epochs to 1?
Here is how Keras documentation defines an epoch:
Epoch: an arbitrary cutoff, generally defined as "one pass over the entire dataset", used to separate training into distinct phases, which is useful for logging and periodic evaluation.
So, in other words, a number of epochs means how many times you go through your training set.
The model is updated each time a batch is processed, which means that it can be updated multiple times during one epoch. If batch_size is set equal to the length of x, then the model will be updated once per epoch.
