1. Python
  2. Python | Tensorflow exp () method

Python | Tensorflow exp () method



The tensorflow.math module provides support for many basic mathematical operations. The tf.exp () [alias tf.math.exp ] function provides support for the exponential function in Tensorflow. Expected to be input as complex numbers in the form or floating point. Input type — tensor, and if the input contains more than one element, an element-wise exponential value is calculated, ,

Syntax : tf.exp (x, name = None) or tf.math.exp (x, name = None)

Parameters :
x : A Tensor of type bfloat16, half, float32, float64, complex64 or complex128.
name (optional): The name for the operation.

Return type : A Tensor with the same size and type as that of x.

Code # 1:

# Import Tensorflow library

import tensorflow as tf

  
# Constant vector of size 5

a = tf.constant ([ - 0.5 , - 0.1 , 0 , 0.1 , 0.5 ], dtype = tf.float32)

 
# Applying the exp function and
# saving the result to & # 39; b & # 39;

b = tf.exp (a, name = `exp` )

  
# Initiate a session Tensorflow
with tf.Session () as sess:

print ( `Input type:` , a)

print ( `Input:` , sess.run (a))

print ( `Return type:` , b)

print ( `Output:` , sess.run (b))

Exit:

 Input type: Tensor ("Const: 0", shape = (5,), dtype = float32) Input: [-0.5 -0.1 0. 0.1 0.5] Return type: Tensor ("exp: 0", shape = (5,), dtype = float32) Output: [0.60653067 0.9048374 1.1.105171 1.6487212]

Code # 2: Rendering

# Import Tensorflow library

import tensorflow as tf

 
# Import NumPy library

import numpy as np

  
# Import the matplotlib.pylot function

import matplotlib.pyplot as plt

 
# Vector size 21 with values ​​from -10 to 10

a = < / code> np.linspace ( - 10 , 10 , 21 )

 
# Applying an exponential function and
# save the result to & # 39; b & # 39;

b = tf.exp (a, name = ` exp` )

 
# Initiating a Tensorflow session
with tf.Session () as sess:

print ( ` Input: ` , a)

print ( `Output:` , sess.run (b))

plt.plot (a, sess.run (b), color = `red` , marker = " o " ) 

plt.title ( "tensorflow.abs" ) 

plt.xlabel ( "X" ) 

plt.ylabel ( "Y" ) 

  

  plt.show ()

Output :

 Input: [-10. -nine. -eight. -7. -6. -five. -four. -3. -2. -one. 0. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.] Output: [4.53999298e-05 1.23409804e-04 3.35462628e-04 9.11881966e-04 2.47875218e-03 6.73794700e-03 1.83156389e-02 4.97870684e-02 1.35335283e-01 3.67879441e-01 1.00000000e + 00 2.71828183e + 00 7.38905610e + 00 2.00855369e + 01 5.45981500e + 01 1.48413159e + 02 4.03428793e + 02 1.0966933167 +03 8.10308393e + 03 2.20264658e + 04]