Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/tensorflow_addons/activations/tanhshrink.py: 67%
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« prev ^ index » next coverage.py v7.4.0, created at 2024-01-03 07:57 +0000
1# Copyright 2019 The TensorFlow Authors. All Rights Reserved.
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7# http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14# ==============================================================================
16import tensorflow as tf
18from tensorflow_addons.utils.types import TensorLike
21@tf.keras.utils.register_keras_serializable(package="Addons")
22def tanhshrink(x: TensorLike) -> tf.Tensor:
23 r"""Tanh shrink function.
25 Applies the element-wise function:
27 $$
28 \mathrm{tanhshrink}(x) = x - \tanh(x).
29 $$
31 Usage:
33 >>> x = tf.constant([-1.0, 0.0, 1.0])
34 >>> tfa.activations.tanhshrink(x)
35 <tf.Tensor: shape=(3,), dtype=float32, numpy=array([-0.23840582, 0. , 0.23840582], dtype=float32)>
37 Args:
38 x: A `Tensor`. Must be one of the following types:
39 `bfloat16`, `float16`, `float32`, `float64`.
40 Returns:
41 A `Tensor`. Has the same type as `x`.
42 """
43 x = tf.convert_to_tensor(x)
44 return x - tf.math.tanh(x)