Fascinating, a 30% to 50% improvement on existing nearest-neighbor search / Locally Semantic Hashing via bio-mimicry of the fly olfactory system. The pre-release paper[1] is very readable as the author is seeking to map neuroscience observations directly to computing algorithms and uses clear language.
[1] https://www.biorxiv.org/content/early/2017/08/25/180471