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/lib/mlbackend/php/phpml/src/Phpml/DimensionReduction/ -> EigenTransformerBase.php (source)

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Defines 1 class

EigenTransformerBase:: (2 methods):
  eigenDecomposition()
  reduce()


Class: EigenTransformerBase  - X-Ref

Class to compute eigen pairs (values & vectors) of a given matrix
with the consideration of numFeatures or totalVariance to be preserved

eigenDecomposition(array $matrix)   X-Ref
Calculates eigenValues and eigenVectors of the given matrix. Returns
top eigenVectors along with the largest eigenValues. The total explained variance
of these eigenVectors will be no less than desired $totalVariance value


reduce(array $data)   X-Ref
Returns the reduced data