tf.contrib.losses.sparse_softmax_cross_entropy

Cross-entropy loss using tf.nn.sparse_softmax_cross_entropy_with_logits. (deprecated)

tf.contrib.losses.sparse_softmax_cross_entropy(
    logits, labels, weights=1.0, scope=None
)

weights acts as a coefficient for the loss. If a scalar is provided, then the loss is simply scaled by the given value. If weights is a tensor of size [batch_size], then the loss weights apply to each corresponding sample.

Args
logits	[batch_size, num_classes] logits outputs of the network .
labels	[batch_size, 1] or [batch_size] labels of dtype int32 or int64 in the range [0, num_classes).
weights	Coefficients for the loss. The tensor must be a scalar or a tensor of shape [batch_size] or [batch_size, 1].
scope	the scope for the operations performed in computing the loss.

Returns
A scalar Tensor representing the mean loss value.

Raises
ValueError	If the shapes of logits, labels, and weights are incompatible, or if weights is None.