Python – tensorflow.math.lgamma()

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。

lgamma()用于计算 Gamma(x) 绝对值的元素对数。

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

Parameters:

• x: It is a tensor. Allowed dtypes are bfloat16, half, float32, float64.

  <

• name(optional): It defines the name of the operation

Returns: It returns a tensor of dtype as x.

示例 1：

Python3

# importing the library
import tensorflow as tf
  
# Initializing the input tensor
a = tf.constant([7, 8, 13, 11], dtype = tf.float64)
  
# Printing the input tensor
print('a: ', a)
  
# Calculating the result
res = tf.math.lgamma(a)
  
# Printing the result
print('Result: ', res)

输出：

a:  tf.Tensor([ 7.  8. 13. 11.], shape=(4, ), dtype=float64)
Result:  tf.Tensor([ 6.57925121  8.52516136 19.9872145  15.10441257], shape=(4, ), dtype=float64)

示例 2：

Python3

# Importing the libraray
import tensorflow as tf
  
# Initializing the input tensor
a = tf.constant([2, 8, 14, 5], dtype = tf.float32)
  
# Printing the input tensor
print('a: ', a)
  
# Calculating the result
res = tf.math.lgamma(a)
  
# Printing the result
print('Result: ', res)

输出：

a:  tf.Tensor([ 2.  8. 14.  5.], shape=(4, ), dtype=float32)
Result:  tf.Tensor([ 0.         8.525162  22.552166   3.1780539], shape=(4, ), dtype=float32)