Create a model from previously saved checkpoint.
Path prefix of saved model files. You should have "prefix-symbol.json", "prefix-xxxx.params", and optionally "prefix-xxxx.states", where xxxx is the epoch number.
Epoch to load.
Whether to load optimizer states. Checkpoint needs to have been made with saveOptimizerStates=True
Input data names.
Input label names
Default is cpu().
None, indicating uniform workload.
None, indicating no network parameters are fixed.