Question

这就是我遇到的问题，但是我在任何地方都不会将其当作笨蛋。或至少不在我能找到的地方。我已经读过类似的问题，所以已经解决了这些问题，因为实际上有一个实例将其视为布尔。但是，我并没有使用它。

功能：

def compile_cnn(model, loss = None, optimizer = None):

    # Compile the CNN using the specified loss function
    model.compile(loss=loss, optimizer=optimizer)

    # return the compiled model
    return model

自定义Keras损失函数：

def contrastive_loss(label, embedding, margin = 0.4):

    # Assign the label
    y = label

    # Assign the embeddings
    p1 = embedding[0]
    p2 = embedding[1]

    # Get the euclean distance    
    d = tf.norm(p1 - p2, axis=-1)

    if y == 0:
        return (1/2) * math.sqrt(d)
    else:
        return (1/2) * math.sqrt(max(0, (margin-d)))

呼叫代码：

# We use Adam as optimizer
optimizer = keras.optimizers.Adam() 

# Compile the model with the contrastive loss function
cont_loss_model = compile_cnn(model, contrastive_loss, optimizer)

这是请求的完整错误消息。

 C:\Users\User\anaconda3\lib\site-packages\tensorflow\python\keras\engine\training.py:806 train_function  *
        return step_function(self, iterator)
    C:\Users\User\Documents\Uni\2020\IFN680\Assignment 2\SiameseNetwork.py:88 contrastive_loss  *
        return (1/2) * tf.math.sqrt(max(0, (margin-d)))
    C:\Users\User\anaconda3\lib\site-packages\tensorflow\python\framework\ops.py:877 __bool__  **
        self._disallow_bool_casting()
    C:\Users\User\anaconda3\lib\site-packages\tensorflow\python\framework\ops.py:486 _disallow_bool_casting
        self._disallow_when_autograph_enabled(
    C:\Users\User\anaconda3\lib\site-packages\tensorflow\python\framework\ops.py:472 _disallow_when_autograph_enabled
        raise errors.OperatorNotAllowedInGraphError(

    OperatorNotAllowedInGraphError: using a `tf.Tensor` as a Python `bool` is not allowed: AutoGraph did convert this function. This might indicate you are trying to use an unsupported feature.

enter code here

在此处输入代码

在图形执行中不允许将tf.Tensor作为Python bool使用-当我不将其用作布尔值时

0 个答案: