Package org.apache.commons.math3.analysis

Examples of org.apache.commons.math3.analysis.MultivariateVectorFunction

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        /**
         * @return the model function values.
         */
        public ModelFunction getModelFunction() {
            return new ModelFunction(new MultivariateVectorFunction() {
                    /** {@inheritDoc} */
                    public double[] value(double[] point) {
                        // compute the residuals
                        final double[] values = new double[observations.size()];
                        int i = 0;
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        /**
         * @return the model function values.
         */
        public MultivariateVectorFunction getModelFunction() {
            return new MultivariateVectorFunction() {
                /** {@inheritDoc} */
                public double[] value(double[] p) {
                    final int len = points.length;
                    final double[] values = new double[len];
                    for (int i = 0; i < len; i++) {
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    public void testGetIterations() {
        AbstractLeastSquaresOptimizer optim = createOptimizer();
        optim.optimize(new MaxEval(100), new Target(new double[] { 1 }),
                       new Weight(new double[] { 1 }),
                       new InitialGuess(new double[] { 3 }),
                       new ModelFunction(new MultivariateVectorFunction() {
                               public double[] value(double[] point) {
                                   return new double[] {
                                       FastMath.pow(point[0], 4)
                                   };
                               }
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        public double[] getTarget() {
            return target;
        }

        public MultivariateVectorFunction getModelFunction() {
            return new MultivariateVectorFunction() {
                public double[] value(double[] params) {
                    return factors.operate(params);
                }
            };
        }
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        return w;
    }

    public MultivariateVectorFunction getModelFunction() {
        return new MultivariateVectorFunction() {
            public double[] value(double[] params) {
                final Model line = new Model(params[0], params[1]);

                final double[] model = new double[points.size()];
                for (int i = 0; i < points.size(); i++) {
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        this.problem = new LeastSquaresProblem();
    }

    class LeastSquaresProblem {
        public MultivariateVectorFunction getModelFunction() {
            return new MultivariateVectorFunction() {
                public double[] value(final double[] a) {
                    final int n = getNumObservations();
                    final double[] yhat = new double[n];
                    for (int i = 0; i < n; i++) {
                        yhat[i] = getModelValue(getX(i), a);
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            this.x.add(x);
            this.y.add(y);
        }

        public MultivariateVectorFunction getModelFunction() {
            return new MultivariateVectorFunction() {
                public double[] value(double[] variables) {
                    double[] values = new double[x.size()];
                    for (int i = 0; i < values.length; ++i) {
                        values[i] = (variables[0] * x.get(i) + variables[1]) * x.get(i) + variables[2];
                    }
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            time.add(t);
            count.add(c);
        }

        public MultivariateVectorFunction getModelFunction() {
            return new MultivariateVectorFunction() {
                public double[] value(double[] params) {
                    double[] values = new double[time.size()];
                    for (int i = 0; i < values.length; ++i) {
                        final double t = time.get(i);
                        values[i] = params[0] +
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        public Target getTarget() {
            return new Target(target);
        }

        public ModelFunction getModelFunction() {
            return new ModelFunction(new MultivariateVectorFunction() {
                    public double[] value(double[] variables) {
                        return factors.operate(variables);
                    }
                });
        }
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                    }
                });
        }

        public ObjectiveFunctionGradient getObjectiveFunctionGradient() {
            return new ObjectiveFunctionGradient(new MultivariateVectorFunction() {
                    public double[] value(double[] point) {
                        double[] r = factors.operate(point);
                        for (int i = 0; i < r.length; ++i) {
                            r[i] -= target[i];
                        }
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Related Classes of org.apache.commons.math3.analysis.MultivariateVectorFunction

  • org.apache.commons.math3.analysis.differentiation.DerivativeStructure
  • org.apache.commons.math3.analysis.differentiation.MultivariateDifferentiableVectorFunction
  • org.apache.commons.math3.analysis.function.HarmonicOscillator
  • org.apache.commons.math3.analysis.function.Sin
  • org.apache.commons.math3.analysis.function.Sinc
  • org.apache.commons.math3.analysis.MultivariateFunction
  • org.apache.commons.math3.analysis.QuinticFunction
  • org.apache.commons.math3.analysis.solvers.BrentSolver
  • org.apache.commons.math3.analysis.UnivariateFunction
  • org.apache.commons.math3.complex.Complex
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