Visualizing Data Using t-SNE
Why Hacker News recommends it
HN people point to it as the canonical explanation from the method's author whenever t-SNE comes up.
What it is
A Google Tech Talk by Laurens van der Maaten, co-creator of t-SNE, on visualizing high-dimensional data by mapping it to two dimensions. It explains how the technique works and how it compares with other visualization approaches.
Recommended by 1 HN commenters across 1 different months, 2013 to 2019.
What Hacker News said
Recommends a1k0n · 2013-11 · on “Show HN: 3d Word Vectors with Neural Networks, T-SNE, and WebGL”
Barnes-Hut uses a quadtree, doesn't it? I don't know whether the code was adapted to use an octree in 3D instead; maybe it was? FWIW there's a really interesting Google techtalk on how it works: [this video]
Cites zoren · 2016-11 · on “A.I. Experiments”
Thanks for the offer. I've seen this [this video] and I think I understand how it works but still think the results are amazing.
Cites vankessel · 2019-08 · on “The Human Brain Can Create Structures in Up to 11 Dimensions”
Use non spatial dimensions as well, like color, size, and shape. You can also use clever projections like t-sne to reduce the number of dimensions while retaining some of the structure of the data ( [this video] )