all
paddle. all ( x, axis=None, keepdim=False, name=None ) [源代码]
该OP是对指定维度上的Tensor元素进行逻辑与运算,并输出相应的计算结果。
参数
x (Tensor)- 输入变量为多维Tensor,数据类型为bool。
axis (int | list | tuple ,可选)- 计算逻辑与运算的维度。如果为None,则计算所有元素的逻辑与并返回包含单个元素的Tensor变量,否则必须在
范围内。如果
,则维度将变为 rank+axis[i]rank+axis[i] ,默认值为None。
keepdim (bool)- 是否在输出Tensor中保留减小的维度。如 keepdim 为true,否则结果张量的维度将比输入张量小,默认值为False。
name (str , 可选)- 具体用法请参见 Name ,一般无需设置,默认值为None。
返回
Tensor,在指定维度上进行逻辑与运算的Tensor,数据类型和输入数据类型一致。
代码示例
import paddle
import numpy as np
# x is a bool Tensor variable with following elements:
# [[True, False]
# [True, True]]
x = paddle.assign(np.array([[1, 0], [1, 1]], dtype='int32'))
print(x)
x = paddle.cast(x, 'bool')
# out1 should be [False]
out1 = paddle.all(x) # [False]
print(out1)
# out2 should be [True, False]
out2 = paddle.all(x, axis=0) # [True, False]
print(out2)
# keepdim=False, out3 should be [False, True], out.shape should be (2,)
out3 = paddle.all(x, axis=-1) # [False, True]
print(out3)
# keepdim=True, out4 should be [[False], [True]], out.shape should be (2,1)
out4 = paddle.all(x, axis=1, keepdim=True)
out4 = paddle.cast(out4, 'int32') # [[False], [True]]
print(out4)