ModelCheckpoint callback not working

[Mathews-Tom]

Hi

For the notebook, 07_Food_Vision_Milestone_Project_1.ipynb, when I try to run the following command cloned_model.load_weights(checkpoint_path), I get the following error.

NotFoundError: Unsuccessful TensorSliceReader constructor: Failed to find any matching files for model_checkpoints/cp.ckpt

This is my ModelCheckpoint callback definition

from keras.callbacks import ModelCheckpoint

# Create ModelCheckpoint callback to save model's progress
checkpoint_path = "model_checkpoints/cp.ckpt" 
model_checkpoint = ModelCheckpoint(checkpoint_path,
                                   monitor="val_acc", 
                                   save_best_only=True, 
                                   save_weights_only=True), 
                                   #verbose=0) 

The model is only for 2 epochs. It seems the model checkpoint is not saving the model and hence the error, "Failed to find any matching files for model_checkpoints/cp.ckpt"

I have tried it multiple times on Colab as well as on local.

[Mathews-Tom]

Figured the issue. Apparently I had been monitoring val_acc and I was creating the metric val_accuracy during the model fit, that's why the model checkpoint wasn't being saved.

[mrdbourke]

Ahh... I've been caught on that pesky one as well.

There's a few tough ones like that across TensorFlow + some even in Scikit-Learn.