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Adds a Sum-of-Squares loss to the training procedure. (deprecated)

weights acts as a coefficient for the loss. If a scalar is provided, then the loss is simply scaled by the given value. If weights is a tensor of size [batch_size], then the total loss for each sample of the batch is rescaled by the corresponding element in the weights vector. If the shape of weights matches the shape of predictions, then the loss of each measurable element of predictions is scaled by the corresponding value of weights.

predictions The predicted outputs.
labels The ground truth output tensor, same dimensions as 'predictions'.
weights Coefficients for the loss a scalar, a tensor of shape [batch_size] or a tensor whose shape matches predictions.
scope The scope for the operations performed in computing the loss.

A scalar Tensor representing the loss value.

ValueError If the shape of predictions doesn't match that of labels or if the shape of weights is invalid.