Investigating reweighting of samples, see if it is possible to work in SORT without introducing too much bias

[JiayinCao]

Basically, read this paper and decide if it is needed in SORT.
https://jo.dreggn.org/home/2018_fireflies.pdf

Firefly problem is pretty annoying sometimes because there is no way to converge in a reasonable amount of time. If what the paper says works, it may worth a try.