tf.keras.activations.hard_sigmoid
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Hard sigmoid activation function.
View aliases
Compat aliases for migration
See
Migration guide for
more details.
`tf.compat.v1.keras.activations.hard_sigmoid`
tf.keras.activations.hard_sigmoid(
x
)
A faster approximation of the sigmoid activation.
Piecewise linear approximation of the sigmoid function.
Ref: 'https://en.wikipedia.org/wiki/Hard_sigmoid'
Example:
a = tf.constant([-3.0, -1.0, 0.0, 1.0, 3.0], dtype = tf.float32)
b = tf.keras.activations.hard_sigmoid(a)
b.numpy()
array([0. , 0.3, 0.5, 0.7, 1. ], dtype=float32)
Returns |
|---|
The hard sigmoid activation, defined as:
if x < -2.5: return 0if x > 2.5: return 1if -2.5 <= x <= 2.5: return 0.2 * x + 0.5
|
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Last updated 2023-10-06 UTC.
[null,null,["Last updated 2023-10-06 UTC."],[],[],null,["# tf.keras.activations.hard_sigmoid\n\n\u003cbr /\u003e\n\n|----------------------------------------------------------------------------------------------------------|\n| [View source on GitHub](https://github.com/keras-team/keras/tree/v2.13.1/keras/activations.py#L442-L468) |\n\nHard sigmoid activation function.\n\n#### View aliases\n\n\n**Compat aliases for migration**\n\nSee\n[Migration guide](https://www.tensorflow.org/guide/migrate) for\nmore details.\n\n\\`tf.compat.v1.keras.activations.hard_sigmoid\\`\n\n\u003cbr /\u003e\n\n tf.keras.activations.hard_sigmoid(\n x\n )\n\nA faster approximation of the sigmoid activation.\nPiecewise linear approximation of the sigmoid function.\nRef: 'https://en.wikipedia.org/wiki/Hard_sigmoid'\n\n#### Example:\n\n a = tf.constant([-3.0, -1.0, 0.0, 1.0, 3.0], dtype = tf.float32)\n b = tf.keras.activations.hard_sigmoid(a)\n b.numpy()\n array([0. , 0.3, 0.5, 0.7, 1. ], dtype=float32)\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Args ---- ||\n|-----|---------------|\n| `x` | Input tensor. |\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Returns ------- ||\n|---|---|\n| The hard sigmoid activation, defined as: \u003cbr /\u003e - `if x \u003c -2.5: return 0` - `if x \u003e 2.5: return 1` - `if -2.5 \u003c= x \u003c= 2.5: return 0.2 * x + 0.5` ||\n\n\u003cbr /\u003e"]]
View source on GitHub