Deep Learning, Machine Learning, Python, TensorFlow, Artificial Intelligence.
hard examples. TF Categorical Focal Cross Entropy tf.keras.losses.CategoricalFocalCrossentropy is the loss function that is used for multi-class unbalanced classification tasks. tf.keras.losses.CategoricalFocalCrossentropy( alpha=0.25, gamma=2.0, from_logits=False, label_smoothing=0.0, axis=-1,