SPEA2Utils.java

package net.bmahe.genetics4j.moo.spea2.replacement;

import java.util.Comparator;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

import org.apache.commons.lang3.Validate;
import org.apache.commons.lang3.tuple.ImmutablePair;
import org.apache.commons.lang3.tuple.Pair;

import net.bmahe.genetics4j.core.Population;

public class SPEA2Utils {

	private SPEA2Utils() {
	}

	public static <T extends Comparable<T>> int strength(final Comparator<T> dominance, final int index,
			final T fitness, final Population<T> population) {
		Validate.isTrue(index >= 0);
		Validate.isTrue(index < population.size());

		Validate.notNull(fitness);
		Validate.notNull(population);
		Validate.isTrue(population.size() > 0);

		int dominatedCount = 0;

		for (int j = 0; j < population.size(); j++) {
			final T fitnessJ = population.getFitness(j);

			if (dominance.compare(fitness, fitnessJ) > 0) {
				dominatedCount++;
			}
		}

		return dominatedCount;
	}

	public static <T extends Comparable<T>> int rawFitness(final Comparator<T> dominance, final double[] strengths,
			final int index, final T fitness, final Population<T> population) {
		Validate.isTrue(index >= 0);
		Validate.isTrue(index < population.size());

		Validate.notNull(strengths);
		Validate.notNull(fitness);
		Validate.notNull(population);
		Validate.isTrue(population.size() > 0);
		Validate.isTrue(population.size() == strengths.length);

		int rawFitness = 0;

		for (int j = 0; j < population.size(); j++) {
			final T fitnessJ = population.getFitness(j);

			if (index != j) {
				if (dominance.compare(fitness, fitnessJ) < 0) {
					rawFitness += strengths[j];
				}
			}
		}

		return rawFitness;
	}

	public static <T extends Comparable<T>> List<Pair<Integer, Double>> kthDistances(
			final double[][] distanceObjectives, final int index, final T fitness,
			final Population<T> combinedPopulation) {
		Validate.notNull(distanceObjectives);
		Validate.isTrue(index >= 0);
		Validate.isTrue(index < combinedPopulation.size());

		Validate.notNull(fitness);
		Validate.notNull(combinedPopulation);
		Validate.isTrue(combinedPopulation.size() > 0);

		return IntStream.range(0, combinedPopulation.size())
				.boxed()
				.sorted((a, b) -> Double.compare(distanceObjectives[index][a], distanceObjectives[index][b]))
				.map(i -> ImmutablePair.of(i, distanceObjectives[index][i]))
				.collect(Collectors.toList());

	}

}




















Active mutators

CONDITIONALS_BOUNDARY
CONSTRUCTOR_CALLS
EMPTY_RETURNS
EXPERIMENTAL_ARGUMENT_PROPAGATION
EXPERIMENTAL_BIG_DECIMAL
EXPERIMENTAL_BIG_INTEGER
EXPERIMENTAL_MEMBER_VARIABLE
EXPERIMENTAL_NAKED_RECEIVER
EXPERIMENTAL_REMOVE_SWITCH_MUTATOR_[0-99]
EXPERIMENTAL_SWITCH
FALSE_RETURNS
INCREMENTS
INLINE_CONSTS
INVERT_NEGS
MATH
NEGATE_CONDITIONALS
NON_VOID_METHOD_CALLS
NULL_RETURNS
PRIMITIVE_RETURNS
REMOVE_CONDITIONALS_EQUAL_ELSE
REMOVE_CONDITIONALS_EQUAL_IF
REMOVE_CONDITIONALS_ORDER_ELSE
REMOVE_CONDITIONALS_ORDER_IF
REMOVE_INCREMENTS
TRUE_RETURNS
VOID_METHOD_CALLS

Tests examined

Report generated by PIT 1.19.6

1		package net.bmahe.genetics4j.moo.spea2.replacement;
2
3		import java.util.Comparator;
4		import java.util.List;
5		import java.util.stream.Collectors;
6		import java.util.stream.IntStream;
7
8		import org.apache.commons.lang3.Validate;
9		import org.apache.commons.lang3.tuple.ImmutablePair;
10		import org.apache.commons.lang3.tuple.Pair;
11
12		import net.bmahe.genetics4j.core.Population;
13
14		public class SPEA2Utils {
15
16		private SPEA2Utils() {
17		}
18
19		public static <T extends Comparable<T>> int strength(final Comparator<T> dominance, final int index,
20		final T fitness, final Population<T> population) {
21		Validate.isTrue(index >= 0);
22		Validate.isTrue(index < population.size());
23
24		Validate.notNull(fitness);
25		Validate.notNull(population);
26		Validate.isTrue(population.size() > 0);
27
28	1 1. strength : Substituted 0 with 1 → NO_COVERAGE	int dominatedCount = 0;
29
30	6 1. strength : removed conditional - replaced comparison check with true → NO_COVERAGE 2. strength : removed call to net/bmahe/genetics4j/core/Population::size → NO_COVERAGE 3. strength : Substituted 0 with 1 → NO_COVERAGE 4. strength : removed conditional - replaced comparison check with false → NO_COVERAGE 5. strength : negated conditional → NO_COVERAGE 6. strength : changed conditional boundary → NO_COVERAGE	for (int j = 0; j < population.size(); j++) {
31	1 1. strength : removed call to net/bmahe/genetics4j/core/Population::getFitness → NO_COVERAGE	final T fitnessJ = population.getFitness(j);
32
33	5 1. strength : removed conditional - replaced comparison check with true → NO_COVERAGE 2. strength : removed call to java/util/Comparator::compare → NO_COVERAGE 3. strength : negated conditional → NO_COVERAGE 4. strength : changed conditional boundary → NO_COVERAGE 5. strength : removed conditional - replaced comparison check with false → NO_COVERAGE	if (dominance.compare(fitness, fitnessJ) > 0) {
34	2 1. strength : Removed increment 1 → NO_COVERAGE 2. strength : Changed increment from 1 to -1 → NO_COVERAGE	dominatedCount++;
35		}
36		}
37
38	1 1. strength : replaced int return with 0 for net/bmahe/genetics4j/moo/spea2/replacement/SPEA2Utils::strength → NO_COVERAGE	return dominatedCount;
39		}
40
41		public static <T extends Comparable<T>> int rawFitness(final Comparator<T> dominance, final double[] strengths,
42		final int index, final T fitness, final Population<T> population) {
43		Validate.isTrue(index >= 0);
44		Validate.isTrue(index < population.size());
45
46		Validate.notNull(strengths);
47		Validate.notNull(fitness);
48		Validate.notNull(population);
49		Validate.isTrue(population.size() > 0);
50		Validate.isTrue(population.size() == strengths.length);
51
52	1 1. rawFitness : Substituted 0 with 1 → NO_COVERAGE	int rawFitness = 0;
53
54	6 1. rawFitness : removed conditional - replaced comparison check with false → NO_COVERAGE 2. rawFitness : removed call to net/bmahe/genetics4j/core/Population::size → NO_COVERAGE 3. rawFitness : changed conditional boundary → NO_COVERAGE 4. rawFitness : removed conditional - replaced comparison check with true → NO_COVERAGE 5. rawFitness : negated conditional → NO_COVERAGE 6. rawFitness : Substituted 0 with 1 → NO_COVERAGE	for (int j = 0; j < population.size(); j++) {
55	1 1. rawFitness : removed call to net/bmahe/genetics4j/core/Population::getFitness → NO_COVERAGE	final T fitnessJ = population.getFitness(j);
56
57	3 1. rawFitness : negated conditional → NO_COVERAGE 2. rawFitness : removed conditional - replaced equality check with true → NO_COVERAGE 3. rawFitness : removed conditional - replaced equality check with false → NO_COVERAGE	if (index != j) {
58	5 1. rawFitness : changed conditional boundary → NO_COVERAGE 2. rawFitness : removed call to java/util/Comparator::compare → NO_COVERAGE 3. rawFitness : removed conditional - replaced comparison check with true → NO_COVERAGE 4. rawFitness : negated conditional → NO_COVERAGE 5. rawFitness : removed conditional - replaced comparison check with false → NO_COVERAGE	if (dominance.compare(fitness, fitnessJ) < 0) {
59	1 1. rawFitness : Replaced double addition with subtraction → NO_COVERAGE	rawFitness += strengths[j];
60		}
61		}
62		}
63
64	1 1. rawFitness : replaced int return with 0 for net/bmahe/genetics4j/moo/spea2/replacement/SPEA2Utils::rawFitness → NO_COVERAGE	return rawFitness;
65		}
66
67		public static <T extends Comparable<T>> List<Pair<Integer, Double>> kthDistances(
68		final double[][] distanceObjectives, final int index, final T fitness,
69		final Population<T> combinedPopulation) {
70		Validate.notNull(distanceObjectives);
71		Validate.isTrue(index >= 0);
72		Validate.isTrue(index < combinedPopulation.size());
73
74		Validate.notNull(fitness);
75		Validate.notNull(combinedPopulation);
76		Validate.isTrue(combinedPopulation.size() > 0);
77
78	4 1. kthDistances : replaced return value with Collections.emptyList for net/bmahe/genetics4j/moo/spea2/replacement/SPEA2Utils::kthDistances → NO_COVERAGE 2. kthDistances : removed call to java/util/stream/IntStream::range → NO_COVERAGE 3. kthDistances : Substituted 0 with 1 → NO_COVERAGE 4. kthDistances : removed call to net/bmahe/genetics4j/core/Population::size → NO_COVERAGE	return IntStream.range(0, combinedPopulation.size())
79	1 1. kthDistances : removed call to java/util/stream/IntStream::boxed → NO_COVERAGE	.boxed()
80	6 1. lambda$kthDistances$0 : removed call to java/lang/Double::compare → NO_COVERAGE 2. lambda$kthDistances$0 : removed call to java/lang/Integer::intValue → NO_COVERAGE 3. kthDistances : removed call to java/util/stream/Stream::sorted → NO_COVERAGE 4. lambda$kthDistances$0 : removed call to java/lang/Integer::intValue → NO_COVERAGE 5. kthDistances : replaced call to java/util/stream/Stream::sorted with receiver → NO_COVERAGE 6. lambda$kthDistances$0 : replaced int return with 0 for net/bmahe/genetics4j/moo/spea2/replacement/SPEA2Utils::lambda$kthDistances$0 → NO_COVERAGE	.sorted((a, b) -> Double.compare(distanceObjectives[index][a], distanceObjectives[index][b]))
81	6 1. kthDistances : replaced call to java/util/stream/Stream::map with receiver → NO_COVERAGE 2. lambda$kthDistances$1 : removed call to java/lang/Integer::intValue → NO_COVERAGE 3. lambda$kthDistances$1 : removed call to org/apache/commons/lang3/tuple/ImmutablePair::of → NO_COVERAGE 4. lambda$kthDistances$1 : replaced return value with null for net/bmahe/genetics4j/moo/spea2/replacement/SPEA2Utils::lambda$kthDistances$1 → NO_COVERAGE 5. kthDistances : removed call to java/util/stream/Stream::map → NO_COVERAGE 6. lambda$kthDistances$1 : removed call to java/lang/Double::valueOf → NO_COVERAGE	.map(i -> ImmutablePair.of(i, distanceObjectives[index][i]))
82	2 1. kthDistances : removed call to java/util/stream/Collectors::toList → NO_COVERAGE 2. kthDistances : removed call to java/util/stream/Stream::collect → NO_COVERAGE	.collect(Collectors.toList());
83
84		}
85
86		}
		Mutations
28		1.1 Location : strength Killed by : none Substituted 0 with 1 → NO_COVERAGE
30		1.1 Location : strength Killed by : none removed conditional - replaced comparison check with true → NO_COVERAGE 2.2 Location : strength Killed by : none removed call to net/bmahe/genetics4j/core/Population::size → NO_COVERAGE 3.3 Location : strength Killed by : none Substituted 0 with 1 → NO_COVERAGE 4.4 Location : strength Killed by : none removed conditional - replaced comparison check with false → NO_COVERAGE 5.5 Location : strength Killed by : none negated conditional → NO_COVERAGE 6.6 Location : strength Killed by : none changed conditional boundary → NO_COVERAGE
31		1.1 Location : strength Killed by : none removed call to net/bmahe/genetics4j/core/Population::getFitness → NO_COVERAGE
33		1.1 Location : strength Killed by : none removed conditional - replaced comparison check with true → NO_COVERAGE 2.2 Location : strength Killed by : none removed call to java/util/Comparator::compare → NO_COVERAGE 3.3 Location : strength Killed by : none negated conditional → NO_COVERAGE 4.4 Location : strength Killed by : none changed conditional boundary → NO_COVERAGE 5.5 Location : strength Killed by : none removed conditional - replaced comparison check with false → NO_COVERAGE
34		1.1 Location : strength Killed by : none Removed increment 1 → NO_COVERAGE 2.2 Location : strength Killed by : none Changed increment from 1 to -1 → NO_COVERAGE
38		1.1 Location : strength Killed by : none replaced int return with 0 for net/bmahe/genetics4j/moo/spea2/replacement/SPEA2Utils::strength → NO_COVERAGE
52		1.1 Location : rawFitness Killed by : none Substituted 0 with 1 → NO_COVERAGE
54		1.1 Location : rawFitness Killed by : none removed conditional - replaced comparison check with false → NO_COVERAGE 2.2 Location : rawFitness Killed by : none removed call to net/bmahe/genetics4j/core/Population::size → NO_COVERAGE 3.3 Location : rawFitness Killed by : none changed conditional boundary → NO_COVERAGE 4.4 Location : rawFitness Killed by : none removed conditional - replaced comparison check with true → NO_COVERAGE 5.5 Location : rawFitness Killed by : none negated conditional → NO_COVERAGE 6.6 Location : rawFitness Killed by : none Substituted 0 with 1 → NO_COVERAGE
55		1.1 Location : rawFitness Killed by : none removed call to net/bmahe/genetics4j/core/Population::getFitness → NO_COVERAGE
57		1.1 Location : rawFitness Killed by : none negated conditional → NO_COVERAGE 2.2 Location : rawFitness Killed by : none removed conditional - replaced equality check with true → NO_COVERAGE 3.3 Location : rawFitness Killed by : none removed conditional - replaced equality check with false → NO_COVERAGE
58		1.1 Location : rawFitness Killed by : none changed conditional boundary → NO_COVERAGE 2.2 Location : rawFitness Killed by : none removed call to java/util/Comparator::compare → NO_COVERAGE 3.3 Location : rawFitness Killed by : none removed conditional - replaced comparison check with true → NO_COVERAGE 4.4 Location : rawFitness Killed by : none negated conditional → NO_COVERAGE 5.5 Location : rawFitness Killed by : none removed conditional - replaced comparison check with false → NO_COVERAGE
59		1.1 Location : rawFitness Killed by : none Replaced double addition with subtraction → NO_COVERAGE
64		1.1 Location : rawFitness Killed by : none replaced int return with 0 for net/bmahe/genetics4j/moo/spea2/replacement/SPEA2Utils::rawFitness → NO_COVERAGE
78		1.1 Location : kthDistances Killed by : none replaced return value with Collections.emptyList for net/bmahe/genetics4j/moo/spea2/replacement/SPEA2Utils::kthDistances → NO_COVERAGE 2.2 Location : kthDistances Killed by : none removed call to java/util/stream/IntStream::range → NO_COVERAGE 3.3 Location : kthDistances Killed by : none Substituted 0 with 1 → NO_COVERAGE 4.4 Location : kthDistances Killed by : none removed call to net/bmahe/genetics4j/core/Population::size → NO_COVERAGE
79		1.1 Location : kthDistances Killed by : none removed call to java/util/stream/IntStream::boxed → NO_COVERAGE
80		1.1 Location : lambda$kthDistances$0 Killed by : none removed call to java/lang/Double::compare → NO_COVERAGE 2.2 Location : lambda$kthDistances$0 Killed by : none removed call to java/lang/Integer::intValue → NO_COVERAGE 3.3 Location : kthDistances Killed by : none removed call to java/util/stream/Stream::sorted → NO_COVERAGE 4.4 Location : lambda$kthDistances$0 Killed by : none removed call to java/lang/Integer::intValue → NO_COVERAGE 5.5 Location : kthDistances Killed by : none replaced call to java/util/stream/Stream::sorted with receiver → NO_COVERAGE 6.6 Location : lambda$kthDistances$0 Killed by : none replaced int return with 0 for net/bmahe/genetics4j/moo/spea2/replacement/SPEA2Utils::lambda$kthDistances$0 → NO_COVERAGE
81		1.1 Location : kthDistances Killed by : none replaced call to java/util/stream/Stream::map with receiver → NO_COVERAGE 2.2 Location : lambda$kthDistances$1 Killed by : none removed call to java/lang/Integer::intValue → NO_COVERAGE 3.3 Location : lambda$kthDistances$1 Killed by : none removed call to org/apache/commons/lang3/tuple/ImmutablePair::of → NO_COVERAGE 4.4 Location : lambda$kthDistances$1 Killed by : none replaced return value with null for net/bmahe/genetics4j/moo/spea2/replacement/SPEA2Utils::lambda$kthDistances$1 → NO_COVERAGE 5.5 Location : kthDistances Killed by : none removed call to java/util/stream/Stream::map → NO_COVERAGE 6.6 Location : lambda$kthDistances$1 Killed by : none removed call to java/lang/Double::valueOf → NO_COVERAGE
82		1.1 Location : kthDistances Killed by : none removed call to java/util/stream/Collectors::toList → NO_COVERAGE 2.2 Location : kthDistances Killed by : none removed call to java/util/stream/Stream::collect → NO_COVERAGE

SPEA2Utils.java

Mutations

Active mutators

Tests examined