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f6c15198bc
This matches other apps results and we directly compute the values from the data instead of doing a gradient descent.
27 lines
938 B
C++
27 lines
938 B
C++
#ifndef REGRESSION_POWER_MODEL_H
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#define REGRESSION_POWER_MODEL_H
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#include "model.h"
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namespace Regression {
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class PowerModel : public Model {
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public:
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using Model::Model;
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Poincare::Layout layout() override;
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I18n::Message formulaMessage() const override { return I18n::Message::PowerRegressionFormula; }
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double evaluate(double * modelCoefficients, double x) const override;
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double levelSet(double * modelCoefficients, double xMin, double step, double xMax, double y, Poincare::Context * context) override;
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double partialDerivate(double * modelCoefficients, int derivateCoefficientIndex, double x) const override;
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void fit(Store * store, int series, double * modelCoefficients, Poincare::Context * context) override;
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int numberOfCoefficients() const override { return 2; }
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int bannerLinesCount() const override { return 2; }
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protected:
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bool dataSuitableForFit(Store * store, int series) const override;
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};
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}
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#endif
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