Are “Sparse expansive representations” the same as SDRs? It is interesting that the authors of this paper found a common solution, but from a different domain (fruit fly olfactory circuits).
Bio-Inspired Hashing for Unsupervised Similarity Search
BioHash is based on another paper (with Hopfield and Krotov) that introduced “FlyHash”. BioHash uses a biologically-plausible learning rule, while FlyHash does not do any learning on the dataset.
Personally, I am curious if Olfactory circuits benefitted from having a NeoCortex before Auditory or Visual sensors ever did… and if the mysterious algorithm for Visual scene understanding has a simpler implementation in the Olfactory system.