Return the current validation error/loss (SeanNaren#57)

Previously, the model.py script would return the minimum error/loss
that occurred during training. This isn't particularly informative
as it's possible that the minimum validation error/loss does not
correspond with the loss of the persisted model. This update prints
the loss/error for the saved model.

model.py

@@ -194,16 +194,17 @@ def get_audio_conf(model):
  print(" Window Size: ", model._audio_conf.get("window_size", "n/a"))
  print(" Window Stride: ", model._audio_conf.get("window_stride", "n/a"))
 
- if package.get('meta', None) is not None:
- print("")
- print("Additional Metadata")
- for k, v in model._meta:
- print(" ", k, ": ", v)
  if package.get('loss_results', None) is not None:
  print("")
  print("Training Information")
  epochs = package['epoch']
  print(" Epochs: ", epochs)
- print(" Min Loss: {0:.3f}".format(package['loss_results'][0:epochs-1].min()))
- print(" Min CER: {0:.3f}".format(package['cer_results'][0:epochs-1].min()))
- print(" Min WER: {0:.3f}".format(package['wer_results'][0:epochs-1].min()))
+ print(" Current Loss: {0:.3f}".format(package['loss_results'][epochs-1]))
+ print(" Current CER: {0:.3f}".format(package['cer_results'][epochs-1]))
+ print(" Current WER: {0:.3f}".format(package['wer_results'][epochs-1]))
+
+ if package.get('meta', None) is not None:
+ print("")
+ print("Additional Metadata")
+ for k, v in model._meta:
+ print(" ", k, ": ", v)