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Everything about Nonlinear dimensionality reduction

Projection of data onto lower-dimensional manifolds

Nonlinear dimensionality reduction (NLDR), also known as manifold learning, is any of various related techniques that aim to project high-dimensional data, potentially existing across non-linear manifolds which cannot be adequately captured by linear decomposition methods, onto lower-dimensional latent manifolds, with the goal of either visualizing the data in the low-dimensional space, or learning the mapping itself. The techniques described below can be understood as generalizations of linear decomposition methods used for dimensionality reduction, such as singular value decomposition and principal component analysis. Wikipedia โ†’

๐Ÿงญ Start here: a 6-step reading path

  1. Read the overview: Nonlinear dimensionality reductionA 5-minute orientation
  2. Skim a recent paper: Comparing different nonlinear dimensionality reduction techniques for data-driven unsteady fluid flow modelingInfluential work since 2022
  3. Pick up a classic book: Advances in Computational IntelligenceThe most-reprinted book on the subject
  4. Read the landmark paper: Nonlinear Dimensionality Reduction by Locally Linear EmbeddingCited 11,883 times
  5. Go sideways: IsomapA closely related topic
  6. Go sideways: Dimensionality reductionA closely related topic

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๐Ÿ† Landmark papers (most cited)

๐Ÿ†• Influential since 2022

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