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      1 # LLE (Locally Linear Embedding)
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      3 ML D5
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      5 **Definition:** LLE is a dimensionality reduction technique that uses manifold learning instead of projection.
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      7 LLE works by finding the distance between an instance and its nearest neighbors and then lookking for a low-dimensional representation of the training set where these relationships are best preserved. 
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      9 This approach is good at unrolling twisted manifolds when there is not too much noise.