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/lib/mlbackend/php/phpml/src/Phpml/Math/Statistic/ -> ANOVA.php (source)

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Differences Between: [Versions 310 and 400] [Versions 311 and 400] [Versions 39 and 400]

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File Size: 141 lines (4 kb)
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Includes or requires: 0 files

Defines 1 class

ANOVA:: (7 methods):
  oneWayF()
  sumOfSquaresPerFeature()
  sumOfFeaturesPerClass()
  sumOfSquares()
  squaresSum()
  calculateSsbn()
  calculateSswn()


Class: ANOVA  - X-Ref

Analysis of variance
https://en.wikipedia.org/wiki/Analysis_of_variance

oneWayF(array $samples)   X-Ref
The one-way ANOVA tests the null hypothesis that 2 or more groups have
the same population mean. The test is applied to samples from two or
more groups, possibly with differing sizes.

return: float[]
param: array[] $samples - each row is class samples

sumOfSquaresPerFeature(array $samples)   X-Ref
No description

sumOfFeaturesPerClass(array $samples)   X-Ref
No description

sumOfSquares(array $sums)   X-Ref
No description

squaresSum(array $sums)   X-Ref
No description

calculateSsbn(array $samples, array $sumSamplesSquare, array $samplesPerClass, array $squareSumSamples, int $allSamples)   X-Ref
No description

calculateSswn(array $ssbn, array $ssAllSamples, array $squareSumSamples, int $allSamples)   X-Ref
No description