Example usage for org.apache.commons.math.optimization.direct DirectSearchOptimizer setStartConfiguration

Introduction

In this page you can find the example usage for org.apache.commons.math.optimization.direct DirectSearchOptimizer setStartConfiguration.

Prototype

public void setStartConfiguration(final double[][] referenceSimplex) throws IllegalArgumentException 

Source Link

Document

Set start configuration for simplex.

Usage

From source file:elkfed.main.AutoTune.java

public static void main(String[] args) {
    try {/*ww w. j  a va2s.c om*/
        CorefExperimentDocument doc;
        doc = CorefExperimentDocument.Factory.parse(new FileInputStream(args[0]));
        Evaluator eval = new Evaluator(doc);
        double[][] samples = new double[eval.getNumParameters() + 1][];
        for (int i = 0; i < eval.getNumParameters() + 1; i++) {
            samples[i] = eval.sample();
        }
        DirectSearchOptimizer optimizer = new NelderMead();
        try {
            optimizer.setStartConfiguration(samples);
            optimizer.setConvergenceChecker(new StupidConvergenceChecker());
            optimizer.optimize(eval, GoalType.MINIMIZE, samples[0]);
        } catch (ConvergenceException ex) {
            ex.printStackTrace();
        }
        System.out.println("*** Best values:");
        eval.saveBest(System.out);
    } catch (Exception ex) {
        ex.printStackTrace();
        System.exit(1);
    }
}

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