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Problem :

Getting softmax error as follows
only call `softmax_cross_entropy_with_logits` with named arguments (labels=..., logits=..., ...)
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2 Answers

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Solution :

I have faced the same issue in the past. After doing a lot of research i found the solution as given below

You need to change the below line


to below given correct line.

tf.nn.softmax_cross_entropy_with_logits(logits=prediction, labels=y)
If you follow above procedure your issue will be resolved.
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Generally about what the cross entropy function measures. At its core, it takes two probability distributions and estimates the "distance" between them, allowing you to get them closer to one another. For this case, one distribution is the softmax vector (logits), and the second is the one-hot label. I'm not sure if y-conv or y_ is the softmax or one-hot label, so I took a random assumption in the code. 

A very useful method of use case is to have logits and labels of shape [batch_size, num_classes], but higher dimensions are supported, with the axis argument specifying the class dimension.

Backpropagation will only occur into both logits and labels. For disallowing back propagation into labels, pass label tensors through tf.stop_gradient before feeding it to this function.

You have to computes softmax cross entropy between logits and labels.

    labels, logits, axis=-1, name=None

We face this error after changing to what you said ValueError: No gradients provided for any variable, check your graph for ops that do not support gradients, between variables ["<tf.Variable 'Variable:0' shape=(32,) dtype=float32_ref .

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