categorical_crossentropy VS sparse_categorical_crossentropy

• If the targets are one-hot encoded, use categorical_crossentropy
  • Examoles of one-hot encodings:
    • [1, 0, 0]
    • [0, 1, 0]
    • [0, 0, 1]
• If the targets are integers, use sparse_categorical_crossentropy
  • Examples of integer encodings
    • 1
    • 2
    • 3