Comments (1)
Hello, thanks for checking this out.
First, regarding earlystop
, I defined it as a function so if you want to include earlystop in callbacks, you need to specify the 'mode' e.g earlystop('acc')
. Below I shared a working version of the notebook that I just tried but I would still like to highlight some points regarding training.
- If we are using only the clean dataset, the sample size is too low for a reasonably deep network to capture features. That's why augmentation is so necessary for this project.
- You can reduce the number of layers (check the shared notebook) and increase the validation size a bit more so that the network can understand what to penalize. This is because without augmentation the sample size is....
- Not only mean squared error but you can also try MSE + Log MSE.
def custom_loss(y_true, y_pred):
msleObject = tf.keras.losses.MeanSquaredLogarithmicError()
y_true = tf.cast(y_true, tf.float64)
y_true = tf.add(y_true, 1e-9)
y_pred = tf.add(y_pred, 1e-9)
msleTensor = msleObject(y_true, y_pred)
mseObject = tf.keras.losses.MeanSquaredError()
mseTensor = mseObject(y_true, y_pred)
mseTensor_m = tf.math.scalar_mul(5, mseTensor, name=None) #alpha is hyperparameter
tot_loss = tf.add(msleTensor, mseTensor_m)
return tot_loss
model.compile(..., loss=custom_loss)
Here, I just went through the VGG16 part to check how bad it gets over epochs.
happy learning and best!
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