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Update rank_cross_entropy_loss to avoid NANs #779

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Aug 7, 2019
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Update rank_cross_entropy_loss to avoid NANs #779

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2 changes: 1 addition & 1 deletion matchzoo/losses/rank_cross_entropy_loss.py
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Original file line number Diff line number Diff line change
Expand Up @@ -48,7 +48,7 @@ def __call__(self, y_true: np.array, y_pred: np.array) -> np.array:
labels.append(neg_labels)
logits = K.concatenate(logits, axis=-1)
labels = K.concatenate(labels, axis=-1)
return -K.mean(K.sum(labels * K.log(K.softmax(logits)), axis=-1))
return -K.mean(K.sum(labels * K.log(K.softmax(logits) + np.finfo(float).eps), axis=-1))

@property
def num_neg(self):
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