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[Repost Q] Are there commonly used shapes for testing 4D+ classifiers? (such as half moons for 2D) (www.researchgate.net)

submitted 2 years ago* (last edited 2 years ago) by ShadowAether to c/learnmachinelearning

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This question is being reposted to preserve technical content removed from elsewhere. Feel free to add your own answers/discussion.

Original question: Using interleaving half circles or circle inside another circle seem common for 2D, are there similar shapes people use for higher dimensions? Maybe a hypersphere inside a hypersphere? I was thinking of trying to do something more complicated than a bunch of blobs.

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[–] ShadowAether 3 points 2 years ago* (last edited 2 years ago)

A hypersphere within a second hypersphere or a swiss roll: swiss roll image

Can both easily be reproduced in more than 2 dimensions.