Some basic hyper parameter ques

What is the difference between epoch and iterations?
In this 3D multi-class segmentation paper in section 3 Experiments & Results the authors mention “…Training of 20,000 iterations.”
Does it mean they ran 20,000 subvolume patches?

An epoch usually refers to using the entire dataset once, while an iteration usually refers to a training step using a batch.
In case you know the batch size and number of sample in the Dataset, you could transform “Training of 20,000 iterations” into epochs.

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