Python – tensorflow.math.sigmoid()

• Last Updated : 05 Nov, 2021

TensorFlow is open-source Python library designed by Google to develop Machine Learning models and deep learning  neural networks.

sigmoid() is used to find element wise sigmoid of x.

Syntax: tensorflow.math.sigmoid(x, name)

Parameters:

• x: It’s a tensor. Allowed dtypes are float16, float32, float64, complex64, or complex128.
• name(optional): It defines the name for the operation.

Return: It return a tensor of same dtype as x.

Example 1:

Python3

 # importing the library import tensorflow as tf   # Initializing the input tensor a = tf.constant([.2, .5, .7, 1, 2, 5, 10], dtype = tf.float64)   # Printing the input tensor print('a: ', a)   # Calculating result res = tf.math.sigmoid(x = a)   # Printing the result print('Result: ', res)

Output:

a:  tf.Tensor([ 0.2  0.5  0.7  1.   2.   5.  10. ], shape=(7, ), dtype=float64)
Result:  tf.Tensor(
[0.549834   0.62245933 0.66818777 0.73105858 0.88079708 0.99330715
0.9999546 ], shape=(7, ), dtype=float64)

Example 2: Visualization

Python3

 # importing the library import tensorflow as tf import matplotlib.pyplot as plt   # Initializing the input tensor a = tf.constant([.2, .5, .7, 1, 2, 5, 10], dtype = tf.float64)   # Calculating result res = tf.math.sigmoid(x = a)   # Plotting the graph plt.plot(a, res, color = 'green') plt.title('tensorflow.math.sigmiod') plt.xlabel('Input') plt.ylabel('Result') plt.show()

Output:

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