tf.keras.losses.sparse_categorical_crossentropy
Computes the sparse categorical crossentropy loss.
tf.keras.losses.sparse_categorical_crossentropy(
y_true, y_pred, from_logits=False, axis=-1
)
Standalone usage:
y_true = [1, 2]
y_pred = [[0.05, 0.95, 0], [0.1, 0.8, 0.1]]
loss = tf.keras.losses.sparse_categorical_crossentropy(y_true, y_pred)
assert loss.shape == (2,)
loss.numpy()
array([0.0513, 2.303], dtype=float32)
| Args | |
|---|---|
y_true |
Ground truth values. |
y_pred |
The predicted values. |
from_logits |
Whether y_pred is expected to be a logits tensor. By default, we assume that y_pred encodes a probability distribution. |
axis |
(Optional) Defaults to -1. The dimension along which the entropy is computed. |
| Returns | |
|---|---|
| Sparse categorical crossentropy loss value. |
© 2020 The TensorFlow Authors. All rights reserved.
Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r2.4/api_docs/python/tf/keras/losses/sparse_categorical_crossentropy