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27 lines
554 B
C++
27 lines
554 B
C++
#include "linear_model.h"
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#include <math.h>
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#include <assert.h>
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namespace Regression {
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double LinearModel::evaluate(double * modelCoefficients, double x) const {
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double a = modelCoefficients[0];
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double b = modelCoefficients[1];
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return a*x+b;
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}
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double LinearModel::partialDerivate(double * modelCoefficients, int derivateCoefficientIndex, double x) const {
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if (derivateCoefficientIndex == 0) {
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// Derivate: x
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return x;
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}
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if (derivateCoefficientIndex == 1) {
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// Derivate: 1;
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return 1;
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}
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assert(false);
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return 0.0;
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}
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}
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