Python – tensorflow.math.is_nan()
TensorFlow是谷歌设计的开源Python库,用于开发机器学习模型和深度学习神经网络。
is_nan()如果元素是NaN则返回true,否则返回false。
语法: tensorflow.math.is_NaN( x, name)
参数:
- x:它是一个张量。允许的d类型是bfloat16, half, float32, float64。
- name(可选):它定义了该操作的名称
返回:它返回一个dtype bool的张量。
示例 1:
# importing the library
import tensorflow as tf
import numpy as np
# Initializing the input tensor
a = tf.constant([7, 8, 13, 11, np.inf], dtype = tf.float64)
# Printing the input tensor
print('a: ', a)
# Calculating the result
res = tf.math.is_nan(a)
# Printing the result
print('Result: ', res)
输出:
a: tf.Tensor([ 7. 8. 13. 11. inf], shape=(5, ), dtype=float64)
Result: tf.Tensor([False False False False False], shape=(5, ), dtype=bool)
实例2:本实例使用numpy nan。
# Importing the libraray
import tensorflow as tf
import numpy as np
# Initializing the input tensor
a = tf.constant([7, 8, 13, 11, np.nan], dtype = tf.float64)
# Printing the input tensor
print('a: ', a)
# Calculating the result
res = tf.math.is_nan(a)
# Printing the result
print('Result: ', res)
输出:
a: tf.Tensor([ 7. 8. 13. 11. nan], shape=(5, ), dtype=float64)
Result: tf.Tensor([False False False False True], shape=(5, ), dtype=bool)