This video describes the PaCMAP technique for dimension reduction, which is an alternative to t-SNE and UMAP. It was derived based on an understanding of what makes dimension algorithms work.
Paper:
Understanding How Dimension Reduction Tools Work: An Empirical Approach to Deciphering t-SNE, UMAP, TriMAP, and PaCMAP for Data Visualization
https://arxiv.org/abs/2012.04456
Code:
https://github.com/YingfanWang/PaCMAP
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