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Home arrow Manifold Learning
Manifold Learning

manifold learningSwiss roll from Weinberger & Saul.  The problem of manifold learning, illustrated for N=800 data points sampled from a "Swiss roll" labelled 1. 

A discretized manifold is revealed by connecting each data point and its k=6 nearest neighbors 2.  An unsupervised learning algorithm unfolds the Swiss roll while preserving the local geometry of nearby data points 3.  Finally, the data points are projected onto the two dimensional subspace that maximizes their variance, yielding a faithful embedding of the original manifold 4.

                     nearest neighbors

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