sgpp::solver::RidgeFunction Class Reference

The RidgeFunction class. More...

#include <RidgeFunction.hpp>

Inheritance diagram for sgpp::solver::RidgeFunction:

Public Member Functions
double	eval (sgpp::base::DataVector weights) override
	eval evaluates the regularization function for weights. More...
base::DataVector	prox (const sgpp::base::DataVector &weights, double stepsize) override
	prox evaluates the proximal operator for the function for weights. More...
	RidgeFunction (double lambda)
	RidgeFunction. More...

Detailed Description

The RidgeFunction class.

Corresponds to the regularization function \( \Vert \boldsymbol{\alpha} \Vert_2^2\).

Constructor & Destructor Documentation

RidgeFunction()

sgpp::solver::RidgeFunction::RidgeFunction ( double  lambda )

inlineexplicit

RidgeFunction.

Parameters

lambda

controls the regularization strength.

Member Function Documentation

eval()

double sgpp::solver::RidgeFunction::eval ( sgpp::base::DataVector  weights )

inlineoverridevirtual

eval evaluates the regularization function for weights.

Parameters

weights

Implements sgpp::solver::RegularizationFunction.

References sgpp::base::DataVector::dotProduct().

prox()

base::DataVector sgpp::solver::RidgeFunction::prox ( const sgpp::base::DataVector &  weights, double  stepsize  )

inlineoverridevirtual

prox evaluates the proximal operator for the function for weights.

Parameters

weights
stepsize	is the stepsize used for the proximal step

Implements sgpp::solver::RegularizationFunction.

References sgpp::base::DataVector::getSize(), and python.statsfileInfo::i.

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The documentation for this class was generated from the following file:

• solver/src/sgpp/solver/sle/fista/RidgeFunction.hpp