Python – tensorflow.math.softplus()

TensorFlow 是由 Google 设计的开源Python库，用于开发机器学习模型和深度学习神经网络。

softplus()用于计算元素级 log(exp(features) + 1)。

Syntax: tensorflow.math.softplus(features, name)

Parameters:

• features: It’s a tensor. Allowed dtypes are  half, bfloat16, float32, float64.
• name(optional): It defines the name for the operation.

Returns: It returns a tensor.

示例 1：

Python3

# importing the library
import tensorflow as tf
  
# Initializing the input tensor
a = tf.constant([ 5, 7, 9, 15], dtype = tf.float64)
  
# Printing the input tensor
print('a: ', a)
  
# Calculating result
res = tf.math.softplus(a)
  
# Printing the result
print('Result: ', res)

输出：

a:  tf.Tensor([ 5.  7.  9. 15.], shape=(4, ), dtype=float64)
Result:  tf.Tensor([ 5.00671535  7.00091147  9.0001234  15.00000031], shape=(4, ), dtype=float64)

示例 2：可视化

Python3

# Importing the library
import tensorflow as tf
import matplotlib.pyplot as plt
  
# Initializing the input tensor
a = tf.constant([ 5, 7, 9, 15], dtype = tf.float64)
  
# Calculating tangent
res = tf.math.softplus(a)
  
# Plotting the graph
plt.plot(a, res, color ='green')
plt.title('tensorflow.math.softplus')
plt.xlabel('Input')
plt.ylabel('Result')
plt.show()

输出：