[WIP] PCA n_components='mle' instability. Issue 4441#4827

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lbillingham wants to merge 9 commits intoscikit-learn:masterfrom

lbillingham:issue_4441

Commits on Jun 4, 2015

Partially fixes #4441. Protection from log(0) and spectrum with a tail -> 0.0 when using `pca(n_components='mle')`

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Partially fixes #4441. Protection from log(0) and spectrum with a tail -> 0.0 when using

lbillingham
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Interpolation In-Field Referencing
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Commits on Jun 5, 2015

Partially fixes #4441. Protection from log(0), tiny eigenvalues and spectrum with a tail -> 0.0 when using in PCA('mle')

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hopefully fixing line endings

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Commits on Jun 8, 2015

Commits on Jun 9, 2015