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  • Bug fixes for general core bugs in 3.10.x will end 8 November 2021 (12 months).
  • Bug fixes for security issues in 3.10.x will end 9 May 2022 (18 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
/lib/mlbackend/php/phpml/src/Phpml/Helper/Optimizer/ -> GD.php (source)

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Differences Between: [Versions 310 and 400] [Versions 310 and 401] [Versions 310 and 402] [Versions 310 and 403]

(no description)

File Size: 111 lines (3 kb)
Included or required:0 times
Referenced: 0 times
Includes or requires: 0 files

Defines 1 class

GD:: (4 methods):
  runOptimization()
  gradient()
  updateWeightsWithUpdates()
  clear()


Class: GD  - X-Ref

Batch version of Gradient Descent to optimize the weights
of a classifier given samples, targets and the objective function to minimize

runOptimization(array $samples, array $targets, Closure $gradientCb)   X-Ref
Number of samples given


gradient(array $theta)   X-Ref
Calculates gradient, cost function and penalty term for each sample
then returns them as an array of values


updateWeightsWithUpdates(array $updates, float $penalty)   X-Ref
No description

clear()   X-Ref
Clears the optimizer internal vars after the optimization process.