tf.reduce_logsumexp(input_tensor, reduction_indices=None, keep_dims=False, name=None)
Computes log(sum(exp(elements across dimensions of a tensor))).
Reduces input_tensor along the dimensions given in reduction_indices. Unless keep_dims is true, the rank of the tensor is reduced by 1 for each entry in reduction_indices. If keep_dims is true, the reduced dimensions are retained with length 1.
If reduction_indices has no entries, all dimensions are reduced, and a tensor with a single element is