Being able to run the pre-trained model of surface-lr on a given input file

[danyaljj]

@microth Would be great if we can change the script a little bit such that it is more compatible with the setting we have in the CodaLab.

I think we need the following settings:

• training script: take the local train file and train on it.
• evaluation script: given the pre-trained model, load it and evaluate on a given input file. The following format would be ideal:

> script_name  <input-data-json-file> <output-prediction-json-path>

[microth]

@danyaljj This should be solved now. Just to be on the safe side, can you give both scripts a try?