Post #1428110

@dougmerritt Kohonen invented the SOM precisely for that purpose: unsupervised learning of a relations-preserving nonlinear mapping from a high-dimensional input vector space down to a 2D tonotopic map. He was inspired by how the primate auditory and visual systems perform such mappings, effortlessly. The SOM is one of those Nature-inspired, simple, elegant, efficient, practical solutions—the engineering Holy Grail. You can see why I have been fascinated with this old school AI, for more than four decades.