softmax¶

dragon.vm.tensorflow.nn.softmax(
  logits,
  axis=- 1,
  name=None,
  **kwargs
)[source]¶

Apply the softmax function.

The Softmax function is defined as:

\[\text{Softmax}(x_{i}) = \frac{\exp(x_{i})}{\sum_{j} \exp(x_{j})} \]

The argument axis could be negative:

x = tf.ones((1, 4), dtype='float32')
print(tf.nn.softmax(x, 1))   # [[0.25 0.25 0.25 0.25]]
print(tf.nn.softmax(x, -1))  # Equivalent

Parameters:

• logits (dragon.Tensor) – The input tensor.
• axis (int, optional, default=-1) – The axis to reduce.
• name (str, optional) – The operation name.

Returns:

dragon.Tensor – The output tensor.