EpochOutputStore can optionally store the data to the state #1939
Description
🚀 Feature
The idea is to give an option to have the following:
eos = EpochOutputStore()
evaluator = create_supervised_evaluator(model, metrics)
eos.attach(evaluator, name="eval_data")
# Adding the name is equivalent to
# name = "eval_data"
# @evaluator.on(Events.EPOCH_COMPLETED, name)
# def store_data(engine, name):
# setattr(engine.state, name, eos.data)
state = evaluator.run(data)
print(len(state.eval_data))In addition, it would make sense to move it from contrib to core as well, keeping BC.