Python| TensorFlow logical_not() 方法

Tensorflow 是谷歌开发的开源机器学习库。它的应用之一是开发深度神经网络。

模块tensorflow.math为许多基本的逻辑运算提供了支持。函数tf.logical_not() [别名tf.math.logical_not或tf.Tensor.__invert__ ] 为 Tensorflow 中的逻辑 NOT函数提供支持。它需要 bool 类型的输入。输入类型是张量，如果输入包含多个元素，则计算元素逻辑非， $$ NOT x $$ .

Syntax: tf.logical_not(x, name=None) or tf.math.logical_not(x, name=None) or tf.Tensor.__invert__(x, name=None)

Parameters:
x: A Tensor of type bool.
name (optional): The name for the operation.

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

代码：

# Importing the Tensorflow library
import tensorflow as tf
  
# A constant vector of size 4
a = tf.constant([True, False, False, True], dtype = tf.bool)
  
# Applying the NOT function and
# storing the result in 'b'
b = tf.logical_not(a, name ='logical_not')
  
# Initiating a Tensorflow session
with tf.Session() as sess:
    print('Input type:', a)
    print('Input a:', sess.run(a))
    print('Return type:', b)
    print('Output:', sess.run(b))

输出：

Input type: Tensor("Const:0", shape=(4, ), dtype=bool)
Input: [ True False False True]
Return type: Tensor("logical_and:0", shape=(4, ), dtype=bool)
Output: [ False True True False]