我想比较一个无符号int的TensorFlow张量,例如tf.uint32
到python整数1
。我怎么做?以下所有失败
ones = tf.ones((2, 3), dtype=tf.uint32)
ones == 1
ones == [[1, 1, 1], [1, 1, 1]]
ones == tf.constant(1, dtype=tf.uint32)
ones == tf.ones((2, 3), dtype=tf.uint32) # ?!!! I'm surprised this doesn't work
ones == tf.constant([[1, 1, 1], [1, 1, 1]], dtype=tf.uint32)
含神秘性
tensorflow.python.framework.errors_impl.NotFoundError: Could not find valid device for node.
Node:{{node Equal}}
All kernels registered for op Equal :
device='XLA_GPU'; T in [DT_FLOAT, DT_DOUBLE, DT_INT32, DT_UINT8, DT_INT16, ..., DT_QUINT8, DT_QINT32, DT_BFLOAT16, DT_COMPLEX128, DT_HALF]
device='XLA_CPU_JIT'; T in [DT_FLOAT, DT_DOUBLE, DT_INT32, DT_UINT8, DT_INT16, ..., DT_QUINT8, DT_QINT32, DT_BFLOAT16, DT_COMPLEX128, DT_HALF]
device='XLA_GPU_JIT'; T in [DT_FLOAT, DT_DOUBLE, DT_INT32, DT_UINT8, DT_INT16, ..., DT_QUINT8, DT_QINT32, DT_BFLOAT16, DT_COMPLEX128, DT_HALF]
device='GPU'; T in [DT_BOOL]
device='GPU'; T in [DT_COMPLEX128]
device='GPU'; T in [DT_COMPLEX64]
device='GPU'; T in [DT_INT64]
device='GPU'; T in [DT_INT16]
device='GPU'; T in [DT_INT8]
device='GPU'; T in [DT_INT32]
device='GPU'; T in [DT_UINT8]
device='GPU'; T in [DT_DOUBLE]
device='GPU'; T in [DT_HALF]
device='GPU'; T in [DT_FLOAT]
device='CPU'; T in [DT_BOOL]
device='CPU'; T in [DT_STRING]
device='CPU'; T in [DT_COMPLEX128]
device='CPU'; T in [DT_COMPLEX64]
device='CPU'; T in [DT_INT64]
device='CPU'; T in [DT_INT32]
device='CPU'; T in [DT_BFLOAT16]
device='CPU'; T in [DT_INT16]
device='CPU'; T in [DT_INT8]
device='CPU'; T in [DT_UINT8]
device='CPU'; T in [DT_DOUBLE]
device='CPU'; T in [DT_HALF]
device='CPU'; T in [DT_FLOAT]
device='XLA_CPU'; T in [DT_FLOAT, DT_DOUBLE, DT_INT32, DT_UINT8, DT_INT16, ..., DT_QUINT8, DT_QINT32, DT_BFLOAT16, DT_COMPLEX128, DT_HALF]
[Op:Equal]
在使用tf.int32
时效果很好
>>> tf.ones((2, 3), dtype=tf.int32) == 1
<tf.Tensor: shape=(2, 3), dtype=bool, numpy=
array([[ True, True, True],
[ True, True, True]])>
您可以与uint8
比较。例如,以下代码片段给出正确的输出:
ones = tf.ones((2, 3), dtype=tf.uint8)
ones == 1
<tf.Tensor: shape=(2, 3), dtype=bool, numpy=
array([[ True, True, True],
[ True, True, True]])>
您还可以强制转换任何不受支持的dtypes。
ones = tf.ones((2, 3), dtype = tf.uint32)
ones_c = tf.cast(ones, dtype = tf.int32)
ones_c == 1
<tf.Tensor: shape=(2, 3), dtype=bool, numpy=
array([[ True, True, True],
[ True, True, True]])>
似乎是个错误,这是关于行为的GitHub问题(要跟踪):
https://github.com/tensorflow/tensorflow/issues/39457
更新:现在,您可以使用tf-nightly
比较uint16
和uint32
。