Examples with DoubleObjectPair org.eclipse.collections.api.tuple.primitive.DoubleObjectPair used on opensource projects

Example 1 with DoubleObjectPair

use of org.eclipse.collections.api.tuple.primitive.DoubleObjectPair in project narchy by automenta.

the class Optimize method run.

public Result<X> run(int maxIterations, int repeats, FloatFunction<Supplier<X>> eval) {
    assert (repeats >= 1);
    final int dim = tweaks.size();
    double[] mid = new double[dim];
    // double[] sigma = new double[n];
    double[] min = new double[dim];
    double[] max = new double[dim];
    double[] inc = new double[dim];
    // double[] range = new double[dim];
    X example = subject.get();
    int i = 0;
    for (Tweak w : tweaks) {
        TweakFloat s = (TweakFloat) w;
        // initial guess: get from sample, otherwise midpoint of min/max range
        Object guess = s.get(example);
        mid[i] = guess != null ? ((float) guess) : ((s.getMax() + s.getMin()) / 2f);
        min[i] = (s.getMin());
        max[i] = (s.getMax());
        inc[i] = s.getInc();
        // range[i] = max[i] - min[i];
        // sigma[i] = Math.abs(max[i] - min[i]) * 0.75f; //(s.getInc());
        i++;
    }
    FasterList<DoubleObjectPair<double[]>> experiments = new FasterList<>(maxIterations);
    final double[] maxScore = { Double.NEGATIVE_INFINITY };
    ObjectiveFunction func = new ObjectiveFunction(point -> {
        double score;
        try {
            double sum = 0;
            for (int r = 0; r < repeats; r++) {
                Supplier<X> x = () -> subject(point);
                sum += eval.floatValueOf(x);
            }
            score = sum / repeats;
        } catch (Exception e) {
            logger.error("{} {} {}", this, point, e);
            score = Float.NEGATIVE_INFINITY;
        }
        if (trace)
            csv.out(ArrayUtils.add(point, (int) 0, score));
        maxScore[0] = Math.max(maxScore[0], score);
        // System.out.println(
        // n4(score) + " / " + n4(maxScore[0]) + "\t" + n4(point)
        // );
        experiments.add(pair(score, point));
        experimentIteration(point, score);
        return score;
    });
    if (trace)
        csv = new CSVOutput(System.out, Stream.concat(Stream.of("score"), tweaks.stream().map(t -> t.id)).toArray(String[]::new));
    experimentStart();
    try {
        solve(dim, func, mid, min, max, inc, maxIterations);
    } catch (Throwable t) {
        logger.info("solve {} {}", func, t);
    }
    return new Result<>(experiments, tweaks);
}