public code v1

plugins/afryca.consensusmodel.herreraviedma2002/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

plugins/afryca.consensusmodel.herreraviedma2002/.gitignore

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+/bin

plugins/afryca.consensusmodel.herreraviedma2002/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>afryca.consensusmodel.herreraviedma2002</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.ManifestBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.SchemaBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+		<nature>org.eclipse.pde.PluginNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

plugins/afryca.consensusmodel.herreraviedma2002/.settings/org.eclipse.core.resources.prefs

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+eclipse.preferences.version=1
+encoding/<project>=UTF-8

plugins/afryca.consensusmodel.herreraviedma2002/.settings/org.eclipse.core.runtime.prefs

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+eclipse.preferences.version=1
+line.separator=\n

plugins/afryca.consensusmodel.herreraviedma2002/.settings/org.eclipse.jdt.core.prefs

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+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.8

plugins/afryca.consensusmodel.herreraviedma2002/.settings/org.eclipse.m2e.core.prefs

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+activeProfiles=
+eclipse.preferences.version=1
+resolveWorkspaceProjects=true
+version=1

plugins/afryca.consensusmodel.herreraviedma2002/META-INF/MANIFEST.MF

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+Manifest-Version: 1.0
+Bundle-ManifestVersion: 2
+Bundle-Name: %Bundle-Name
+Bundle-SymbolicName: afryca.consensusmodel.herreraviedma2002;singleton:=true
+Bundle-Version: 1.0.0.qualifier
+Bundle-Vendor: %Bundle-Vendor
+Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Require-Bundle: afryca.consensusmodel
+Automatic-Module-Name: afryca.consensusmodel.herreraviedma2002

plugins/afryca.consensusmodel.herreraviedma2002/OSGI-INF/l10n/bundle.properties

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+#Properties file for afryca.consensusmodel.herreraviedma2002
+Bundle-Vendor = Sinbad\u00B2
+Bundle-Name = HerreraViedma2002
+afryca.consensusmodel.herreraviedma2002.information = Paper: E. Herrera-Viedma, F. Herrera, F. Chiclana, A consensus model for group decision making with different preference structures. IEEE Transactions on Systems, Man and Cybernetics - Part A: Systems and Humans, vol. 32, issue 3, pp. 394-402, 2002.\\n\\nThis model operates with fuzzy preference relations, although in the related paper it is proposed the use of different preference structures by experts. Each expert chooses his/her most suitable preference structure, and they are internally conducted into fuzzy preference relations. Preference orderings and a collective ordering are then computed to measure consensus. Furthermore, the feedback mechanism is based on proximity measures and direction rules.
+afryca.consensusmodel.herreraviedma2002.mainfeature = Fuzzy preference relations\\nDistances based on pref. orderings\\nLinguistic quantifiers\\nDirection rules
+afryca.consensusmodel.herreraviedma2002.name = E. Herrera-Viedma et al. (2002)
+afryca.consensusmodel.herreraviedma2002.observations = This version of the consensus model deals with fuzzy preference relations only, therefore the initial transformation phase is not applied to experts\u2019 preferences.
+afryca.consensusmodel.herreraviedma2002.variable.explotation_quantifiers.description = Parameters of the linguistic quantifier used to compute dominance and non-dominance degrees and conduct preferences of experts into preference orderings
+afryca.consensusmodel.herreraviedma2002.variable.maxcycle.description = Maximum number of consensus rounds allowed
+afryca.consensusmodel.herreraviedma2002.variable.aggregation_quantifiers.description = Parameters of the linguistic quantifier used to compute the collective preference by means of the OWA operator
+afryca.consensusmodel.herreraviedma2002.variable.b.description = Rigorousness of the consensus process: the larger its value, the less discussion shall be required. Recommended values: 0.5, 0.7, 0.9, 1
+afryca.consensusmodel.herreraviedma2002.variable.beta.description = Parameter to control the OR-LIKE of the aggregation operator that computes the global consensus degree
+afryca.consensusmodel.herreraviedma2002.variable.cl.description = Consensus threshold

plugins/afryca.consensusmodel.herreraviedma2002/OSGI-INF/l10n/bundle_es.properties

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+#Archivo de propiedades para afryca.consensusmodel.herreraviedma2002
+Bundle-Vendor = Sinbad\u00B2
+Bundle-Name = HerreraViedma2002
+afryca.consensusmodel.herreraviedma2002.information = Paper: E. Herrera-Viedma, F. Herrera, F. Chiclana, A consensus model for group decision making with different preference structures. IEEE Transactions on Systems, Man and Cybernetics - Part A: Systems and Humans, vol. 32, issue 3, pp. 394-402, 2002.\\n\\nEste modelo opera con relaciones de preferencia difusa, aunque en el artículo es propuesto el uso de diferentes estructuras de preferencias. Cada experto selecciona su estructura de preferencias más adecuada e, internamente, son transformadas a relacioens de preferencia difusas. Tras esta transformación, son calculados ordenes de preferencia y un orden colectivo para medir el consenso. Además, el mecanismo de feedback está basado en las medidas de proximidad y en reglas de dirección.
+afryca.consensusmodel.herreraviedma2002.mainfeature = Relaciones de preferencia difusas\\nDistancias basadas en ordenes de preferencia\\nCuantificadores lingüísticos\\nReglas de dirección
+afryca.consensusmodel.herreraviedma2002.name = E. Herrera-Viedma et al. (2002)
+afryca.consensusmodel.herreraviedma2002.observations = Esta versión del modelo de consenso trabaja únicamente con relaciones de preferencia difusas, por tanto, la fase incial de transformación no es aplicada a las preferencias de los expertos.
+afryca.consensusmodel.herreraviedma2002.variable.explotation_quantifiers.description = Parámetros del cuantificador lingüístico usado para calcular los grados de dominancia y no dominancia y transformar las preferencias de los expertos en ordenes de preferencia
+afryca.consensusmodel.herreraviedma2002.variable.maxcycle.description = Máximo número de rondas de consenso permitidas
+afryca.consensusmodel.herreraviedma2002.variable.aggregation_quantifiers.description = Parámetros del cuantificador lingüístico usado para calcular la preferencia colectiva por medio del operador OWA
+afryca.consensusmodel.herreraviedma2002.variable.b.description = Rigorusidad del proceso de consenso: cuanto mayor es el valor, mayor es el grado de discusión requerida. Se recomiendan valores: 0.5, 0.7, 0.9, 1
+afryca.consensusmodel.herreraviedma2002.variable.beta.description = Parámetro para contgrolar el OR-LIKE del operador de agregación que calcula el grado de consenso global
+afryca.consensusmodel.herreraviedma2002.variable.cl.description = Umbral de consenso

plugins/afryca.consensusmodel.herreraviedma2002/build.properties

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+source.. = src/
+output.. = bin/
+bin.includes = META-INF/,\
+               .,\
+               plugin.xml,\
+               OSGI-INF/

plugins/afryca.consensusmodel.herreraviedma2002/plugin.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<?eclipse version="3.4"?>
+<plugin>
+   <extension
+         point="afryca.consensusmodel">
+      <ConsensusModel
+            ConsensusModel="afryca.consensusmodel.HerreraViedma2002"
+            Information="%afryca.consensusmodel.herreraviedma2002.information"
+            MainFeatures="%afryca.consensusmodel.herreraviedma2002.mainfeature"
+            Multicriteria="false"
+            Name="%afryca.consensusmodel.herreraviedma2002.name"
+            Observations="%afryca.consensusmodel.herreraviedma2002.observations"
+            Structure="afryca.fpr"
+            WithFeedback="true"
+            id="Herrera-Viedma2002">
+         <Variable
+               default_value="0.2;0.6"
+               description="%afryca.consensusmodel.herreraviedma2002.variable.explotation_quantifiers.description"
+               id="explotation_quantifiers"
+               is_array="true"
+               is_internal="false"
+               type="Float">
+            <Array_restriction
+                  type="element_lower_limit"
+                  value="0">
+            </Array_restriction>
+            <Array_restriction
+                  type="element_upper_limit"
+                  value="1">
+            </Array_restriction>
+            <Array_restriction
+                  type="number_of_elements"
+                  value="2">
+            </Array_restriction>
+         </Variable>
+         <Variable
+               default_value="15"
+               description="%afryca.consensusmodel.herreraviedma2002.variable.maxcycle.description"
+               id="maxcycle"
+               is_array="false"
+               is_internal="false"
+               type="Integer">
+            <Restriction
+                  type="lower_limit"
+                  value="1">
+            </Restriction>
+         </Variable>
+         <Variable
+               default_value="0.4;0.8"
+               description="%afryca.consensusmodel.herreraviedma2002.variable.aggregation_quantifiers.description"
+               id="aggregation_quantifiers"
+               is_array="true"
+               is_internal="false"
+               type="Float">
+            <Array_restriction
+                  type="element_lower_limit"
+                  value="0">
+            </Array_restriction>
+            <Array_restriction
+                  type="element_upper_limit"
+                  value="1">
+            </Array_restriction>
+            <Array_restriction
+                  type="number_of_elements"
+                  value="2">
+            </Array_restriction>
+         </Variable>
+         <Variable
+               default_value="0.7"
+               description="%afryca.consensusmodel.herreraviedma2002.variable.b.description"
+               id="b"
+               is_array="false"
+               is_internal="false"
+               type="Float">
+            <Restriction
+                  type="lower_limit"
+                  value="0">
+            </Restriction>
+            <Restriction
+                  type="upper_limit"
+                  value="1">
+            </Restriction>
+         </Variable>
+         <Variable
+               default_value="0.8"
+               description="%afryca.consensusmodel.herreraviedma2002.variable.beta.description"
+               id="beta"
+               is_array="false"
+               is_internal="false"
+               type="Float">
+            <Restriction
+                  type="lower_limit"
+                  value="0">
+            </Restriction>
+            <Restriction
+                  type="upper_limit"
+                  value="1">
+            </Restriction>
+         </Variable>
+         <Variable
+               default_value="0.85"
+               description="%afryca.consensusmodel.herreraviedma2002.variable.cl.description"
+               id="cl"
+               is_array="false"
+               is_internal="false"
+               type="Float">
+            <Restriction
+                  type="lower_limit"
+                  value="0">
+            </Restriction>
+            <Restriction
+                  type="upper_limit"
+                  value="1">
+            </Restriction>
+         </Variable>
+      </ConsensusModel>
+   </extension>
+
+</plugin>

plugins/afryca.consensusmodel.herreraviedma2002/src/afryca/consensusmodel/HerreraViedma2002.java

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+package afryca.consensusmodel;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import afryca.consensusmodel.definition.EResultElements;
+import afryca.fpr.FPR;
+import afryca.structure.Structure;
+
+/**
+ * HerreraViedma2002 consensus model
+ * 
+ * @author Sinbad²
+ * @version 3.0
+ */
+public class HerreraViedma2002 extends ConsensusModel {
+
+	private static final String CONSENSUS_MODEL_NAME = "E. Herrera-Viedma et al. (2002)"; //$NON-NLS-1$
+
+	private static final String AGGREGATION_QUANTIFIERS = "aggregation_quantifiers"; //$NON-NLS-1$
+	private static final String EXPLOTATION_QUANTIFIERS = "explotation_quantifiers"; //$NON-NLS-1$
+	private static final String B = "b"; //$NON-NLS-1$
+	private static final String BETA = "beta"; //$NON-NLS-1$
+	private static final String MAXCYCLE = "maxcycle"; //$NON-NLS-1$
+	private static final String CL = "cl"; //$NON-NLS-1$
+
+	private Float[] aggregation_quantifiers;
+	private Float[] explotation_quantifiers;
+	private Float b;
+	private Float beta;
+	private Integer maxcycle;
+	private Float cl;
+	private Integer[][] alternativesRankings;
+	private int h;
+	private Float cm;
+	private int[] advises;
+	private Float[] aggregation_weights;
+	private Float[] explotation_weights;
+	
+
+	@Override
+	protected void setModelConfiguration() {
+		
+	}
+
+	@Override
+	protected void obtainConfigurationValues() {
+		aggregation_quantifiers = (Float[]) configuration.getValue(AGGREGATION_QUANTIFIERS);
+		explotation_quantifiers = (Float[]) configuration.getValue(EXPLOTATION_QUANTIFIERS);
+		b = (Float) configuration.getValue(B);
+		beta = (Float) configuration.getValue(BETA);
+		maxcycle = (Integer) configuration.getValue(MAXCYCLE);
+		cl = (Float) configuration.getValue(CL);
+		alternativesRankings = new Integer[numberOfExperts + 1][];
+		h = 0;
+		cm = 0f;
+		advises = null;
+		
+		aggregation_weights = ConsensusEngine.computeOWAWeights(numberOfExperts, aggregation_quantifiers[0], aggregation_quantifiers[1]);
+		explotation_weights = ConsensusEngine.computeOWAWeights(numberOfAlternatives, explotation_quantifiers[0], explotation_quantifiers[1]);
+	}
+	
+	@Override
+	protected Float[][][] obtainVisualizeValues() {
+		Structure[] auxPreferences = (Structure[]) clonePreferencesUnion(preferences, ConsensusEngine.groupPreferencesOWA(numberOfExperts, numberOfAlternatives, preferences, aggregation_weights));
+
+		Float[][][] preferencesGroupVisualization = new Float[numberOfExperts + 1][numberOfAlternatives][numberOfAlternatives];
+		for (int k = 0; k < numberOfExperts+1; k++) {
+			preferencesGroupVisualization[k] =  auxPreferences[k].obtainVisualizeValues();
+		}
+		
+		return preferencesGroupVisualization;
+	}
+
+	@Override
+	protected void preFirstSaveRoundResults() {
+		Structure[] auxPreferences = clonePreferencesUnion(preferences, ConsensusEngine.groupPreferencesOWA(numberOfExperts, numberOfAlternatives, preferences, aggregation_weights));
+		
+		Float[] QGDD;
+		for (int i = 0; i <= numberOfExperts; i++) {
+			QGDD = ConsensusEngine.QGDD(numberOfAlternatives, auxPreferences[i], explotation_weights);
+			alternativesRankings[i] = ConsensusEngine.alternativesRanking(QGDD);
+		}
+
+		Set<Integer> Xsol = ConsensusEngine.solutionSet(alternativesRankings[numberOfExperts]);
+		Integer[][] differencesBetweenRankings = differencesBetweenRankings(alternativesRankings);
+		Float[][] consensusDegreesOnAlternativesByExperts = consensusDegreesOnAlternativesByExperts(differencesBetweenRankings, b);
+		Float[] consensusDegreesOnAlternatives = consensusDegreesOnAlternatives(consensusDegreesOnAlternativesByExperts);
+		Float consensusDegreeAchieved = consensusMeasure(consensusDegreesOnAlternatives, beta, Xsol);
+		preSaveRoundResult(1, auxPreferences, obtainVisualizeValues(), consensusDegreeAchieved);
+
+		result.put(EResultElements.initial_consensus_degree, consensusDegreeAchieved);
+		result.put(EResultElements.maxround, maxcycle);
+		result.put(EResultElements.consensus_threshold, cl);
+		result.put(EResultElements.consensus_model, CONSENSUS_MODEL_NAME);
+	}
+
+	@Override
+	protected void preSaveRoundResults() {
+		preSaveRoundResult(h + 1, preferences, obtainVisualizeValues(), cm);
+	}
+
+	@Override
+	protected void consensusRound() {
+		computeCollective();
+		Float[] QGDD;
+		for (int i = 0; i <= numberOfExperts; i++) {
+			QGDD = ConsensusEngine.QGDD(numberOfAlternatives, preferences[i], explotation_weights);
+			alternativesRankings[i] = ConsensusEngine.alternativesRanking(QGDD);
+		}
+
+		Set<Integer> Xsol = ConsensusEngine.solutionSet(alternativesRankings[numberOfExperts]);
+		Integer[][] differencesBetweenRankings = differencesBetweenRankings(alternativesRankings);
+		Float[][] consensusDegreesOnAlternativesByExperts = consensusDegreesOnAlternativesByExperts(differencesBetweenRankings, b);
+		Float[] consensusDegreesOnAlternatives = consensusDegreesOnAlternatives(consensusDegreesOnAlternativesByExperts);
+
+		computeConsensusDegree(consensusDegreesOnAlternatives, Xsol);
+
+		advises = null;
+		if (cm < cl) {
+			Float[] proximityMeasures = proximityMeasures(consensusDegreesOnAlternativesByExperts, beta, Xsol);
+			Set<Integer> farthestExperts = selectFarthestExperts(proximityMeasures);
+			Map<Integer, EChangeType[]> changesByExperts = changesByExperts(farthestExperts, differencesBetweenRankings);
+			makeChanges(changesByExperts, preferences);
+			advises = new int[numberOfExperts];
+			for (int expert = 0; expert < numberOfExperts; expert++) {
+				advises[expert] = 0;
+				if (changesByExperts.get(expert) != null) {
+					for (EChangeType change : changesByExperts.get(expert)) {
+						if (change != EChangeType.NotChange) {
+							advises[expert] = advises[expert] + 1;
+						}
+					}
+				}
+			}
+
+			h++;
+		}
+	}
+
+	private void computeCollective() {
+		preferences[numberOfExperts] = ConsensusEngine.groupPreferencesOWA(numberOfExperts, numberOfAlternatives, preferences, aggregation_weights);
+	}
+
+	private void computeConsensusDegree(Float[] consensusDegreesOnAlternatives, Set<Integer> Xsol) {
+		cm = consensusMeasure(consensusDegreesOnAlternatives, beta, Xsol);
+	}
+
+	@Override
+	protected void posSaveRoundResults() {
+		computeCollective();
+
+		Float[] QGDD;
+		for (int i = 0; i <= numberOfExperts; i++) {
+			QGDD = ConsensusEngine.QGDD(numberOfAlternatives, preferences[i], explotation_weights);
+			alternativesRankings[i] = ConsensusEngine.alternativesRanking(QGDD);
+		}
+
+		Set<Integer> Xsol = ConsensusEngine.solutionSet(alternativesRankings[numberOfExperts]);
+		Integer[][] differencesBetweenRankings = differencesBetweenRankings(alternativesRankings);
+		Float[][] consensusDegreesOnAlternativesByExperts = consensusDegreesOnAlternativesByExperts(differencesBetweenRankings, b);
+		Float[] consensusDegreesOnAlternatives = consensusDegreesOnAlternatives(consensusDegreesOnAlternativesByExperts);
+
+		computeConsensusDegree(consensusDegreesOnAlternatives, Xsol);
+
+		posSaveRoundResult(preferences, obtainVisualizeValues(), cm, advises, preferences[numberOfExperts]);
+	}
+
+	@Override
+	protected boolean mustBeCarriedOutAnotherRound() {
+		return (h < maxcycle) && (cm < cl);
+	}
+
+	@Override
+	protected void saveExecutionResults() {
+		this.configuration.setValue(PREFERENCES, preferences);
+		result.put(EResultElements.number_of_rounds_required, h);
+		result.put(EResultElements.consensus_degree_achieved, cm);
+	}
+
+	private static Integer[][] differencesBetweenRankings(Integer[][] alternativesRankings) {
+
+		Integer[][] result = new Integer[alternativesRankings.length - 1][alternativesRankings[0].length];
+
+		Integer[] groupRanking = alternativesRankings[alternativesRankings.length - 1];
+		Integer[] expertRanking;
+		for (int i = 0; i < result.length; i++) {
+			expertRanking = alternativesRankings[i];
+			result[i] = differencesBetweenRankings(expertRanking, groupRanking);
+		}
+
+		return result;
+
+	}
+
+	private static Integer[] differencesBetweenRankings(Integer[] eR, Integer[] gR) {
+
+		Integer[] result = new Integer[eR.length];
+
+		for (int i = 0; i < eR.length; i++) {
+			result[i] = gR[i] - eR[i];
+		}
+		return result;
+	}
+
+	private static Float[][] consensusDegreesOnAlternativesByExperts(Integer[][] differencesBetweenRankings, float b) {
+
+		int experts = differencesBetweenRankings.length;
+		int alternatives = differencesBetweenRankings[0].length;
+
+		Float[][] result = new Float[experts][alternatives];
+
+		for (int e = 0; e < experts; e++) {
+			for (int a = 0; a < alternatives; a++) {
+				result[e][a] = (float) Math.pow((((float) Math.abs(differencesBetweenRankings[e][a])) / ((float) (alternatives - 1))), b);
+				result[e][a] = Math.round(result[e][a] * 100f) / 100f;
+			}
+		}
+		return result;
+	}
+
+	private static Float[] consensusDegreesOnAlternatives(Float[][] consensusDegreesOnAlternativesByExperts) {
+
+		int experts = consensusDegreesOnAlternativesByExperts.length;
+		int alternatives = consensusDegreesOnAlternativesByExperts[0].length;
+
+		Float[] result = new Float[alternatives];
+
+		for (int a = 0; a < alternatives; a++) {
+			result[a] = 0f;
+			for (int e = 0; e < experts; e++) {
+				result[a] += (consensusDegreesOnAlternativesByExperts[e][a] / experts);
+			}
+			result[a] = 1f - result[a];
+		}
+
+		return result;
+	}
+
+	private static Float consensusMeasure(Float[] consensusMeasures, float beta, Set<Integer> Xsol) {
+		return s_owa__or_like(consensusMeasures, beta, Xsol);
+	}
+
+	private static Float[] proximityMeasures(Float[][] proximityMeasuresByExperts, float beta, Set<Integer> Xsol) {
+
+		int experts = proximityMeasuresByExperts.length;
+
+		Float[] result = new Float[experts];
+
+		for (int i = 0; i < experts; i++) {
+			result[i] = proximityMeasure(proximityMeasuresByExperts[i], beta, Xsol);
+		}
+
+		return result;
+	}
+
+	private static Float proximityMeasure(Float[] proximityMeasuresByExpert, float beta, Set<Integer> Xsol) {
+
+		Float[] aux = new Float[proximityMeasuresByExpert.length];
+		for (int i = 0; i < proximityMeasuresByExpert.length; i++) {
+			aux[i] = 1f - proximityMeasuresByExpert[i];
+		}
+		return s_owa__or_like(aux, beta, Xsol);
+	}
+
+	private static Float s_owa__or_like(Float[] values, float beta, Set<Integer> Xsol) {
+
+		Float result = 0f;
+
+		float value_1 = 0f;
+		float value_2 = 0f;
+		int size_1 = Xsol.size();
+		int size_2 = values.length - size_1;
+		for (int i = 0; i < values.length; i++) {
+			if (Xsol.contains(i)) {
+				value_1 += values[i] / (size_1);
+			} else {
+				value_2 += values[i] / (size_2);
+			}
+		}
+
+		result = ((1f - beta) * value_1) + (beta * value_2);
+		result = Math.round(result * 100f) / 100f;
+
+		return result;
+
+	}
+
+	private static Set<Integer> selectFarthestExperts(Float[] proximityMeasures) {
+
+		Set<Integer> result = new HashSet<>();
+
+		List<Float> orderedValues = new ArrayList<>();
+		for (Float value : proximityMeasures) {
+			orderedValues.add(Float.valueOf(value));
+		}
+
+		Collections.sort(orderedValues);
+		float threashold = orderedValues.get(orderedValues.size() / 2);
+		for (int i = 0; i < proximityMeasures.length; i++) {
+			if (proximityMeasures[i].floatValue() <= threashold) {
+				result.add(Integer.valueOf(i));
+			}
+		}
+
+		return result;
+	}
+
+	private static Map<Integer, EChangeType[]> changesByExperts(Set<Integer> farthestExperts, Integer[][] differencesBetweenRankings) {
+
+		Map<Integer, EChangeType[]> result = new HashMap<>();
+
+		EChangeType[] changes;
+		int alternatives = differencesBetweenRankings[0].length;
+		for (int expert : farthestExperts) {
+			changes = new EChangeType[alternatives];
+			for (int alternative = 0; alternative < alternatives; alternative++) {
+				if (differencesBetweenRankings[expert][alternative] < 0) {
+					changes[alternative] = EChangeType.Increase;
+				} else if (differencesBetweenRankings[expert][alternative].intValue() == 0) {
+					changes[alternative] = EChangeType.NotChange;
+				} else {
+					changes[alternative] = EChangeType.Decrease;
+				}
+			}
+			result.put(Integer.valueOf(expert), changes);
+		}
+		return result;
+
+	}
+
+	private void makeChanges(Map<Integer, EChangeType[]> changes, Structure[] preferences) {
+
+		int alternatives = ((FPR) preferences[0]).getPreferences().length;
+
+		int numberOfChanges = 0;
+
+		// Count changes
+		for (EChangeType[] changesArray : changes.values()) {
+			for (EChangeType change : changesArray) {
+				if (EChangeType.NotChange != change) {
+					numberOfChanges++;
+				}
+			}
+		}
+
+		// Get behaviour for changes
+		double[] changesToMake = getNChanges(numberOfChanges);
+
+		// Make changes
+		EChangeType[] changesArray;
+		EChangeType change;
+		numberOfChanges = 0;
+		float value;
+		float newValue;
+		for (Integer expertIndex : changes.keySet()) {
+			changesArray = changes.get(expertIndex);
+			for (int i = 0; i < changesArray.length; i++) {
+				change = changesArray[i];
+				if (EChangeType.NotChange != change) {
+					value = (float) changesToMake[numberOfChanges++];
+					if (value != 0f) {
+						if (EChangeType.Decrease == change) {
+							value *= -1f;
+						}
+						for (int j = 0; j < alternatives; j++) {
+							if (i != j) {
+								newValue = (Float) preferences[expertIndex].getValue(i, j);
+								newValue += value;
+								if (newValue > 1f) {
+									newValue = 1f;
+								} else if (newValue < 0f) {
+									newValue = 0f;
+								}
+								((FPR) preferences[expertIndex]).setValueSymmetrically(i, j, newValue);
+							}
+						}
+					}
+				}
+			}
+		}
+	}
+
+}

plugins/afryca.consensusmodel.herreraviedma2002/target/MANIFEST.MF

@@ -0,0 +1,11 @@
+Manifest-Version: 1.0
+Bundle-ManifestVersion: 2
+Bundle-Name: %Bundle-Name
+Bundle-SymbolicName: afryca.consensusmodel.herreraviedma2002;singleton:=
+ true
+Bundle-Version: 1.0.0.202101221157
+Bundle-Vendor: %Bundle-Vendor
+Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Require-Bundle: afryca.consensusmodel
+Automatic-Module-Name: afryca.consensusmodel.herreraviedma2002
+

plugins/afryca.consensusmodel.herreraviedma2002/target/local-artifacts.properties

@@ -0,0 +1,4 @@
+#Fri Jan 22 13:00:53 CET 2021
+artifact.main=C\:\\Users\\\u00C1lvaro\\Workspaces\\afryca_2020\\afryca\\plugins\\afryca.consensusmodel.herreraviedma2002\\target\\afryca.consensusmodel.herreraviedma2002-1.0.0-SNAPSHOT.jar
+artifact.attached.p2artifacts=C\:\\Users\\\u00C1lvaro\\Workspaces\\afryca_2020\\afryca\\plugins\\afryca.consensusmodel.herreraviedma2002\\target\\p2artifacts.xml
+artifact.attached.p2metadata=C\:\\Users\\\u00C1lvaro\\Workspaces\\afryca_2020\\afryca\\plugins\\afryca.consensusmodel.herreraviedma2002\\target\\p2content.xml

plugins/afryca.consensusmodel.herreraviedma2002/target/maven-archiver/pom.properties

@@ -0,0 +1,3 @@
+artifactId=afryca.consensusmodel.herreraviedma2002
+groupId=afryca.group
+version=1.0.0-SNAPSHOT

plugins/afryca.consensusmodel.herreraviedma2002/target/p2artifacts.xml

@@ -0,0 +1,13 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<?artifactRepository version='1.1.0'?>
+<artifacts size='1'>
+  <artifact classifier='osgi.bundle' id='afryca.consensusmodel.herreraviedma2002' version='1.0.0.202101221157'>
+    <properties size='5'>
+      <property name='artifact.size' value='11215'/>
+      <property name='download.size' value='11215'/>
+      <property name='maven-groupId' value='afryca.group'/>
+      <property name='maven-artifactId' value='afryca.consensusmodel.herreraviedma2002'/>
+      <property name='maven-version' value='1.0.0-SNAPSHOT'/>
+    </properties>
+  </artifact>
+</artifacts>

plugins/afryca.consensusmodel.herreraviedma2002/target/p2content.xml

@@ -0,0 +1,48 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<units size='1'>
+  <unit id='afryca.consensusmodel.herreraviedma2002' version='1.0.0.202101221157' generation='2'>
+    <update id='afryca.consensusmodel.herreraviedma2002' range='[0.0.0,1.0.0.202101221157)' severity='0'/>
+    <properties size='9'>
+      <property name='es.Bundle-Name' value='HerreraViedma2002'/>
+      <property name='es.Bundle-Vendor' value='Sinbad²'/>
+      <property name='df_LT.Bundle-Name' value='HerreraViedma2002'/>
+      <property name='df_LT.Bundle-Vendor' value='Sinbad²'/>
+      <property name='org.eclipse.equinox.p2.name' value='%Bundle-Name'/>
+      <property name='org.eclipse.equinox.p2.provider' value='%Bundle-Vendor'/>
+      <property name='maven-groupId' value='afryca.group'/>
+      <property name='maven-artifactId' value='afryca.consensusmodel.herreraviedma2002'/>
+      <property name='maven-version' value='1.0.0-SNAPSHOT'/>
+    </properties>
+    <provides size='6'>
+      <provided namespace='org.eclipse.equinox.p2.iu' name='afryca.consensusmodel.herreraviedma2002' version='1.0.0.202101221157'/>
+      <provided namespace='osgi.bundle' name='afryca.consensusmodel.herreraviedma2002' version='1.0.0.202101221157'/>
+      <provided namespace='osgi.identity' name='afryca.consensusmodel.herreraviedma2002' version='1.0.0.202101221157'>
+        <properties size='1'>
+          <property name='type' value='osgi.bundle'/>
+        </properties>
+      </provided>
+      <provided namespace='org.eclipse.equinox.p2.eclipse.type' name='bundle' version='1.0.0'/>
+      <provided namespace='org.eclipse.equinox.p2.localization' name='es' version='1.0.0'/>
+      <provided namespace='org.eclipse.equinox.p2.localization' name='df_LT' version='1.0.0'/>
+    </provides>
+    <requires size='2'>
+      <required namespace='osgi.bundle' name='afryca.consensusmodel' range='0.0.0'/>
+      <requiredProperties namespace='osgi.ee' match='(&amp;(osgi.ee=JavaSE)(version=1.8))'>
+        <description>
+          afryca.consensusmodel.herreraviedma2002
+        </description>
+      </requiredProperties>
+    </requires>
+    <artifacts size='1'>
+      <artifact classifier='osgi.bundle' id='afryca.consensusmodel.herreraviedma2002' version='1.0.0.202101221157'/>
+    </artifacts>
+    <touchpoint id='org.eclipse.equinox.p2.osgi' version='1.0.0'/>
+    <touchpointData size='1'>
+      <instructions size='1'>
+        <instruction key='manifest'>
+          Bundle-SymbolicName: afryca.consensusmodel.herreraviedma2002;singleton:=true&#xA;Bundle-Version: 1.0.0.202101221157&#xA;
+        </instruction>
+      </instructions>
+    </touchpointData>
+  </unit>
+</units>