Recombinations.java 文件源码

@VisibleForTesting
UniformCrossover(final RandomGenerator rng, final double p) {
    this(new Function<Integer, Iterable<Integer>>() {
        @Override
        public Iterable<Integer> apply(final Integer bitStringLength) {
            if (bitStringLength * p < 0.01) {
                return Samplings.random(rng).withoutReplacement().sample(
                        ContiguousSet.create(Range.closedOpen(0, bitStringLength), DiscreteDomain.integers()),
                        new BinomialDistribution(rng, bitStringLength, p).sample()
                );
            } else {
                return Iterables.filter(
                        ContiguousSet.create(Range.closedOpen(0, bitStringLength), DiscreteDomain.integers()),
                        new Predicate<Integer>() {
                            @Override
                            public boolean apply(@Nullable final Integer input) {
                                return p > rng.nextFloat();
                            }
                        });
            }
        }
    });
}