SPEA2Replacement.java

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

import java.util.Comparator;
import java.util.Optional;
import java.util.function.BiFunction;

import org.immutables.value.Value;

import net.bmahe.genetics4j.core.Genotype;
import net.bmahe.genetics4j.core.spec.replacement.ReplacementStrategy;
import net.bmahe.genetics4j.moo.FitnessVector;

@Value.Immutable
public abstract class SPEA2Replacement<T extends Comparable<T>> implements ReplacementStrategy {

	/**
	 * Defines the Pareto dominance relation
	 * 
	 * @return
	 */
	@Value.Default
	public Comparator<T> dominance() {
		return (a, b) -> a.compareTo(b);
	}

	/**
	 * Comparator used for deduplication of solution prior to processing
	 * <p>
	 * If not specified, it defaults to not do any deduplication
	 * 
	 * @return
	 */
	@Value.Default
	public Optional<Comparator<Genotype>> deduplicate() {
		return Optional.empty();
	}

	/**
	 * Determine the k-nearest distance to compute.
	 * <p>
	 * It will default to sqrt(|archive| + |population|)
	 * 
	 * @return
	 */
	@Value.Default
	public Optional<Integer> k() {
		return Optional.empty();
	}

	/**
	 * Define how to compute distances in objective space between two solutions
	 * 
	 * @return Distance
	 */
	@Value.Parameter
	public abstract BiFunction<T, T, Double> distance();

	public static class Builder<T extends Comparable<T>> extends ImmutableSPEA2Replacement.Builder<T> {
	}

	public static <U extends Comparable<U>> Builder<U> builder() {
		return new Builder<U>();
	}

	/**
	 * Factory method to instantiate a SPEA2Selection when fitness is defined as a
	 * FitnessVector of a Number
	 * 
	 * @param <U>         Type of the fitness measurement
	 * @param deduplicate Deduplicator comparator. Null value with disable
	 *                    deduplication
	 * @return A new instance of SPEA2Replacement
	 */
	public static <U extends Number & Comparable<U>> SPEA2Replacement<FitnessVector<U>>
			ofFitnessVector(final Comparator<Genotype> deduplicate) {

		final var builder = new Builder<FitnessVector<U>>();
		builder.deduplicate(Optional.ofNullable(deduplicate));

		builder.distance((fv1, fv2) -> {

			final int dimensions = fv1.dimensions();

			double sum = 0.0;
			for (int i = 0; i < dimensions; i++) {
				final double v1 = fv1.get(i).doubleValue();
				final double v2 = fv2.get(i).doubleValue();

				sum += (v2 - v1) * (v2 - v1);
			}

			return Math.sqrt(sum);
		});

		return builder.build();
	}

	/**
	 * Factory method to instantiate a SPEA2Selection when fitness is defined as a
	 * FitnessVector of a Number
	 * 
	 * @param <U> Type of the fitness measurement
	 * @return A new instance of SPEA2Replacement
	 */
	public static <U extends Number & Comparable<U>> SPEA2Replacement<FitnessVector<U>> ofFitnessVector() {

		return ofFitnessVector(null);
	}
}


















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.spec.replacement;
2
3		import java.util.Comparator;
4		import java.util.Optional;
5		import java.util.function.BiFunction;
6
7		import org.immutables.value.Value;
8
9		import net.bmahe.genetics4j.core.Genotype;
10		import net.bmahe.genetics4j.core.spec.replacement.ReplacementStrategy;
11		import net.bmahe.genetics4j.moo.FitnessVector;
12
13		@Value.Immutable
14		public abstract class SPEA2Replacement<T extends Comparable<T>> implements ReplacementStrategy {
15
16		/**
17		* Defines the Pareto dominance relation
18		*
19		* @return
20		*/
21		@Value.Default
22		public Comparator<T> dominance() {
23	3 1. dominance : replaced return value with null for net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::dominance → NO_COVERAGE 2. lambda$dominance$0 : removed call to java/lang/Comparable::compareTo → NO_COVERAGE 3. lambda$dominance$0 : replaced int return with 0 for net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::lambda$dominance$0 → NO_COVERAGE	return (a, b) -> a.compareTo(b);
24		}
25
26		/**
27		* Comparator used for deduplication of solution prior to processing
28		* <p>
29		* If not specified, it defaults to not do any deduplication
30		*
31		* @return
32		*/
33		@Value.Default
34		public Optional<Comparator<Genotype>> deduplicate() {
35	1 1. deduplicate : removed call to java/util/Optional::empty → NO_COVERAGE	return Optional.empty();
36		}
37
38		/**
39		* Determine the k-nearest distance to compute.
40		* <p>
41		* It will default to sqrt(\|archive\| + \|population\|)
42		*
43		* @return
44		*/
45		@Value.Default
46		public Optional<Integer> k() {
47	1 1. k : removed call to java/util/Optional::empty → NO_COVERAGE	return Optional.empty();
48		}
49
50		/**
51		* Define how to compute distances in objective space between two solutions
52		*
53		* @return Distance
54		*/
55		@Value.Parameter
56		public abstract BiFunction<T, T, Double> distance();
57
58		public static class Builder<T extends Comparable<T>> extends ImmutableSPEA2Replacement.Builder<T> {
59		}
60
61		public static <U extends Comparable<U>> Builder<U> builder() {
62	2 1. builder : replaced return value with null for net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::builder → NO_COVERAGE 2. builder : removed call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::<init> → NO_COVERAGE	return new Builder<U>();
63		}
64
65		/**
66		* Factory method to instantiate a SPEA2Selection when fitness is defined as a
67		* FitnessVector of a Number
68		*
69		* @param <U> Type of the fitness measurement
70		* @param deduplicate Deduplicator comparator. Null value with disable
71		* deduplication
72		* @return A new instance of SPEA2Replacement
73		*/
74		public static <U extends Number & Comparable<U>> SPEA2Replacement<FitnessVector<U>>
75		ofFitnessVector(final Comparator<Genotype> deduplicate) {
76
77	1 1. ofFitnessVector : removed call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::<init> → NO_COVERAGE	final var builder = new Builder<FitnessVector<U>>();
78	3 1. ofFitnessVector : removed call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::deduplicate → NO_COVERAGE 2. ofFitnessVector : removed call to java/util/Optional::ofNullable → NO_COVERAGE 3. ofFitnessVector : replaced call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::deduplicate with receiver → NO_COVERAGE	builder.deduplicate(Optional.ofNullable(deduplicate));
79
80	2 1. ofFitnessVector : removed call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::distance → NO_COVERAGE 2. ofFitnessVector : replaced call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::distance with receiver → NO_COVERAGE	builder.distance((fv1, fv2) -> {
81
82	1 1. lambda$ofFitnessVector$1 : removed call to net/bmahe/genetics4j/moo/FitnessVector::dimensions → NO_COVERAGE	final int dimensions = fv1.dimensions();
83
84	1 1. lambda$ofFitnessVector$1 : Substituted 0.0 with 1.0 → NO_COVERAGE	double sum = 0.0;
85	5 1. lambda$ofFitnessVector$1 : Substituted 0 with 1 → NO_COVERAGE 2. lambda$ofFitnessVector$1 : removed conditional - replaced comparison check with false → NO_COVERAGE 3. lambda$ofFitnessVector$1 : negated conditional → NO_COVERAGE 4. lambda$ofFitnessVector$1 : changed conditional boundary → NO_COVERAGE 5. lambda$ofFitnessVector$1 : removed conditional - replaced comparison check with true → NO_COVERAGE	for (int i = 0; i < dimensions; i++) {
86	2 1. lambda$ofFitnessVector$1 : removed call to net/bmahe/genetics4j/moo/FitnessVector::get → NO_COVERAGE 2. lambda$ofFitnessVector$1 : removed call to java/lang/Number::doubleValue → NO_COVERAGE	final double v1 = fv1.get(i).doubleValue();
87	2 1. lambda$ofFitnessVector$1 : removed call to net/bmahe/genetics4j/moo/FitnessVector::get → NO_COVERAGE 2. lambda$ofFitnessVector$1 : removed call to java/lang/Number::doubleValue → NO_COVERAGE	final double v2 = fv2.get(i).doubleValue();
88
89	4 1. lambda$ofFitnessVector$1 : Replaced double subtraction with addition → NO_COVERAGE 2. lambda$ofFitnessVector$1 : Replaced double addition with subtraction → NO_COVERAGE 3. lambda$ofFitnessVector$1 : Replaced double multiplication with division → NO_COVERAGE 4. lambda$ofFitnessVector$1 : Replaced double subtraction with addition → NO_COVERAGE	sum += (v2 - v1) * (v2 - v1);
90		}
91
92	4 1. lambda$ofFitnessVector$1 : replaced Double return value with 0 for net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::lambda$ofFitnessVector$1 → NO_COVERAGE 2. lambda$ofFitnessVector$1 : removed call to java/lang/Double::valueOf → NO_COVERAGE 3. lambda$ofFitnessVector$1 : removed call to java/lang/Math::sqrt → NO_COVERAGE 4. lambda$ofFitnessVector$1 : replaced call to java/lang/Math::sqrt with argument → NO_COVERAGE	return Math.sqrt(sum);
93		});
94
95	2 1. ofFitnessVector : replaced return value with null for net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::ofFitnessVector → NO_COVERAGE 2. ofFitnessVector : removed call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::build → NO_COVERAGE	return builder.build();
96		}
97
98		/**
99		* Factory method to instantiate a SPEA2Selection when fitness is defined as a
100		* FitnessVector of a Number
101		*
102		* @param <U> Type of the fitness measurement
103		* @return A new instance of SPEA2Replacement
104		*/
105		public static <U extends Number & Comparable<U>> SPEA2Replacement<FitnessVector<U>> ofFitnessVector() {
106
107	2 1. ofFitnessVector : removed call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::ofFitnessVector → NO_COVERAGE 2. ofFitnessVector : replaced return value with null for net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::ofFitnessVector → NO_COVERAGE	return ofFitnessVector(null);
108		}
109		}
		Mutations
23		1.1 Location : dominance Killed by : none replaced return value with null for net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::dominance → NO_COVERAGE 2.2 Location : lambda$dominance$0 Killed by : none removed call to java/lang/Comparable::compareTo → NO_COVERAGE 3.3 Location : lambda$dominance$0 Killed by : none replaced int return with 0 for net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::lambda$dominance$0 → NO_COVERAGE
35		1.1 Location : deduplicate Killed by : none removed call to java/util/Optional::empty → NO_COVERAGE
47		1.1 Location : k Killed by : none removed call to java/util/Optional::empty → NO_COVERAGE
62		1.1 Location : builder Killed by : none replaced return value with null for net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::builder → NO_COVERAGE 2.2 Location : builder Killed by : none removed call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::<init> → NO_COVERAGE
77		1.1 Location : ofFitnessVector Killed by : none removed call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::<init> → NO_COVERAGE
78		1.1 Location : ofFitnessVector Killed by : none removed call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::deduplicate → NO_COVERAGE 2.2 Location : ofFitnessVector Killed by : none removed call to java/util/Optional::ofNullable → NO_COVERAGE 3.3 Location : ofFitnessVector Killed by : none replaced call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::deduplicate with receiver → NO_COVERAGE
80		1.1 Location : ofFitnessVector Killed by : none removed call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::distance → NO_COVERAGE 2.2 Location : ofFitnessVector Killed by : none replaced call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::distance with receiver → NO_COVERAGE
82		1.1 Location : lambda$ofFitnessVector$1 Killed by : none removed call to net/bmahe/genetics4j/moo/FitnessVector::dimensions → NO_COVERAGE
84		1.1 Location : lambda$ofFitnessVector$1 Killed by : none Substituted 0.0 with 1.0 → NO_COVERAGE
85		1.1 Location : lambda$ofFitnessVector$1 Killed by : none Substituted 0 with 1 → NO_COVERAGE 2.2 Location : lambda$ofFitnessVector$1 Killed by : none removed conditional - replaced comparison check with false → NO_COVERAGE 3.3 Location : lambda$ofFitnessVector$1 Killed by : none negated conditional → NO_COVERAGE 4.4 Location : lambda$ofFitnessVector$1 Killed by : none changed conditional boundary → NO_COVERAGE 5.5 Location : lambda$ofFitnessVector$1 Killed by : none removed conditional - replaced comparison check with true → NO_COVERAGE
86		1.1 Location : lambda$ofFitnessVector$1 Killed by : none removed call to net/bmahe/genetics4j/moo/FitnessVector::get → NO_COVERAGE 2.2 Location : lambda$ofFitnessVector$1 Killed by : none removed call to java/lang/Number::doubleValue → NO_COVERAGE
87		1.1 Location : lambda$ofFitnessVector$1 Killed by : none removed call to net/bmahe/genetics4j/moo/FitnessVector::get → NO_COVERAGE 2.2 Location : lambda$ofFitnessVector$1 Killed by : none removed call to java/lang/Number::doubleValue → NO_COVERAGE
89		1.1 Location : lambda$ofFitnessVector$1 Killed by : none Replaced double subtraction with addition → NO_COVERAGE 2.2 Location : lambda$ofFitnessVector$1 Killed by : none Replaced double addition with subtraction → NO_COVERAGE 3.3 Location : lambda$ofFitnessVector$1 Killed by : none Replaced double multiplication with division → NO_COVERAGE 4.4 Location : lambda$ofFitnessVector$1 Killed by : none Replaced double subtraction with addition → NO_COVERAGE
92		1.1 Location : lambda$ofFitnessVector$1 Killed by : none replaced Double return value with 0 for net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::lambda$ofFitnessVector$1 → NO_COVERAGE 2.2 Location : lambda$ofFitnessVector$1 Killed by : none removed call to java/lang/Double::valueOf → NO_COVERAGE 3.3 Location : lambda$ofFitnessVector$1 Killed by : none removed call to java/lang/Math::sqrt → NO_COVERAGE 4.4 Location : lambda$ofFitnessVector$1 Killed by : none replaced call to java/lang/Math::sqrt with argument → NO_COVERAGE
95		1.1 Location : ofFitnessVector Killed by : none replaced return value with null for net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::ofFitnessVector → NO_COVERAGE 2.2 Location : ofFitnessVector Killed by : none removed call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement$Builder::build → NO_COVERAGE
107		1.1 Location : ofFitnessVector Killed by : none removed call to net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::ofFitnessVector → NO_COVERAGE 2.2 Location : ofFitnessVector Killed by : none replaced return value with null for net/bmahe/genetics4j/moo/spea2/spec/replacement/SPEA2Replacement::ofFitnessVector → NO_COVERAGE

SPEA2Replacement.java

Mutations

Active mutators

Tests examined