Which version of spectral clustering is implemented in sklearn library? Is it Shi, Malik or Ng, Jordan, Weiss from this tutorial? In sklearn user guide, both versions are mentioned in reference. From the source code, it is not trivial to understand what is implemented as the authors used some tricks for code optimization.
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According to this page (https://scikit-learn.org/stable/modules/manifold.html#spectral-embedding), it uses the Laplacian Eigenmaps algorithm; does this help? – Itamar Mushkin Jul 05 '20 at 07:31