NN Descent Code typo error

[Heisenberg-Yin]

Dear authors

I have a question regarding the ComponentRefineNNDescent::update() function in the component_refine.cpp file. In this function, there's a conditional statement nn.distance > nhood_o.pool.back().distance. I'm wondering if there's a possibility that this condition should instead be nn.distance < nhood_o.pool.back().distance. Could you please review and explain whether this change is appropriate or necessary?

Best Regards,
Ziqi