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Commit 355b5d74 authored by Gianluca's avatar Gianluca
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Algoritmi_2/Laboratorio/Lab8/Clustering/.gitignore 0 → 100644
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### IntelliJ IDEA ###
out/
!**/src/main/**/out/
!**/src/test/**/out/
### Eclipse ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
bin/
!**/src/main/**/bin/
!**/src/test/**/bin/
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
### VS Code ###
.vscode/
### Mac OS ###
.DS_Store
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Algoritmi_2/Laboratorio/Lab8/Clustering/.idea/.gitignore 0 → 100644
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# Default ignored files
/shelf/
/workspace.xml
Algoritmi_2/Laboratorio/Lab8/Clustering/.idea/misc.xml 0 → 100644
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="openjdk-21" project-jdk-type="JavaSDK">
<output url="file://$PROJECT_DIR$/out" />
</component>
</project>
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Algoritmi_2/Laboratorio/Lab8/Clustering/.idea/modules.xml 0 → 100644
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectModuleManager">
<modules>
<module fileurl="file://$PROJECT_DIR$/Clustering.iml" filepath="$PROJECT_DIR$/Clustering.iml" />
</modules>
</component>
</project>
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Algoritmi_2/Laboratorio/Lab8/Clustering/.idea/vcs.xml 0 → 100644
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings">
<mapping directory="$PROJECT_DIR$/../../../.." vcs="Git" />
</component>
</project>
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Algoritmi_2/Laboratorio/Lab8/Clustering/Clustering.iml 0 → 100644
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<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$/Test" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
<orderEntry type="module-library">
<library>
<CLASSES>
<root url="jar://$MODULE_DIR$/../../graphLib.jar!/" />
</CLASSES>
<JAVADOC>
<root url="jar://$MODULE_DIR$/../../graphLib.jar!/doc" />
</JAVADOC>
<SOURCES />
</library>
</orderEntry>
<orderEntry type="module-library" scope="TEST">
<library name="JUnit5.8.1">
<CLASSES>
<root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter/5.8.1/junit-jupiter-5.8.1.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-api/5.8.1/junit-jupiter-api-5.8.1.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-commons/1.8.1/junit-platform-commons-1.8.1.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/apiguardian/apiguardian-api/1.1.2/apiguardian-api-1.1.2.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-params/5.8.1/junit-jupiter-params-5.8.1.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-engine/5.8.1/junit-jupiter-engine-5.8.1.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-engine/1.8.1/junit-platform-engine-1.8.1.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
</library>
</orderEntry>
<orderEntry type="module-library" scope="TEST">
<library name="JUnit5.8.1">
<CLASSES>
<root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter/5.8.1/junit-jupiter-5.8.1.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-api/5.8.1/junit-jupiter-api-5.8.1.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-commons/1.8.1/junit-platform-commons-1.8.1.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/apiguardian/apiguardian-api/1.1.2/apiguardian-api-1.1.2.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-params/5.8.1/junit-jupiter-params-5.8.1.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-engine/5.8.1/junit-jupiter-engine-5.8.1.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-engine/1.8.1/junit-platform-engine-1.8.1.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
</library>
</orderEntry>
</component>
</module>
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Algoritmi_2/Laboratorio/Lab8/Clustering/Test/ClusteringTest.java 0 → 100644
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import it.uniupo.graphLib.UndirectedGraph;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
public class ClusteringTest {
@Test
void dada() {
UndirectedGraph g = new UndirectedGraph("8; 0 1 11; 0 7 9; 1 4 1; 1 7 1; 1 2 2; 2 3 3; 3 4 1; 4 5 2; 5 7 8");
Clustering clu = new Clustering(g, 5);
}
@Test
public void test4Clusters() {
UndirectedGraph g = new UndirectedGraph("4; 0 1 2; 1 3 7; 3 2 4; 2 0 1");
Clustering clustering = new Clustering(g, 4);
Assertions.assertFalse(clustering.sameCluster(0, 1));
Assertions.assertFalse(clustering.sameCluster(0, 2));
Assertions.assertFalse(clustering.sameCluster(0, 3));
Assertions.assertFalse(clustering.sameCluster(1, 2));
Assertions.assertFalse(clustering.sameCluster(1, 3));
Assertions.assertFalse(clustering.sameCluster(2, 3));
Assertions.assertEquals(1, clustering.spaziamento());
}
@Test
public void test3Clusters() {
UndirectedGraph g = new UndirectedGraph("4; 0 1 2; 1 3 7; 3 2 4; 2 0 1");
Clustering clustering = new Clustering(g, 3);
Assertions.assertTrue(clustering.sameCluster(0, 2));
Assertions.assertTrue(clustering.sameCluster(2, 0)); //Solo per vedere se la sameCluster è implementata bene
Assertions.assertFalse(clustering.sameCluster(0, 1));
Assertions.assertFalse(clustering.sameCluster(0, 3));
Assertions.assertFalse(clustering.sameCluster(1, 2));
Assertions.assertFalse(clustering.sameCluster(1, 3));
Assertions.assertFalse(clustering.sameCluster(2, 3));
Assertions.assertEquals(2, clustering.spaziamento());
}
@Test
public void test2Clusters() {
UndirectedGraph g = new UndirectedGraph("4; 0 1 2; 1 3 7; 3 2 4; 2 0 1");
Clustering clustering = new Clustering(g, 2);
Assertions.assertTrue(clustering.sameCluster(0, 2) && clustering.sameCluster(0, 1) && clustering.sameCluster(1, 2));
for (int i = 0; i < 3; ++i) {
Assertions.assertFalse(clustering.sameCluster(i, 3));
}
Assertions.assertEquals(4, clustering.spaziamento());
}
@Test
public void test1Clusters() {
UndirectedGraph g = new UndirectedGraph("4; 0 1 2; 1 3 7; 3 2 4; 2 0 1");
Clustering clustering = new Clustering(g, 1);
System.out.println(clustering.getClusters());
System.out.println(clustering.spaziamento());
for (int i = 0; i <= 3; ++i) {
for (int j = 0; j <= 3; ++j) {
if (i != j) {
Assertions.assertTrue(clustering.sameCluster(i, j));
}
}
}
Assertions.assertEquals(-99, clustering.spaziamento()); //Di fatto non esiste spaziamento
}
}
Algoritmi_2/Laboratorio/Lab8/Clustering/src/Clustering.java 0 → 100644
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import it.uniupo.algoTools.MinHeap;
import it.uniupo.algoTools.UnionByRank;
import it.uniupo.algoTools.UnionFind;
import it.uniupo.graphLib.Edge;
import it.uniupo.graphLib.UndirectedGraph;
public class Clustering {
private final UndirectedGraph myGraph;
private final int clusterCnt;
public Clustering(UndirectedGraph g, int numCluster) {
myGraph = g;
clusterCnt = numCluster;
}
private int kruskalClustering(UnionFind unionFind) {
MinHeap<Edge, Integer> minHeap = new MinHeap<>();
for (int u = 0; u < myGraph.getOrder(); ++u) {
for (Edge uv : myGraph.getOutEdges(u)) {
minHeap.add(uv, uv.getWeight());
}
}
while (!minHeap.isEmpty() && unionFind.getNumberOfSets() > clusterCnt) {
Edge e = minHeap.extractMin();
int tail = e.getTail();
int head = e.getHead();
int tailLeader = unionFind.find(tail);
int headLeader = unionFind.find(head);
unionFind.union(tailLeader, headLeader);
}
if (minHeap.isEmpty()) return -99; //Se non ci sono più archi
boolean isAValidEdge = false;
int spaziamento = -99; //Se non ci sono più archi validi
while (!minHeap.isEmpty() && !isAValidEdge) {
Edge e = minHeap.extractMin();
int tail = e.getTail();
int head = e.getHead();
int tailLeader = unionFind.find(tail);
int headLeader = unionFind.find(head);
if (tailLeader != headLeader) {
isAValidEdge = true;
spaziamento = e.getWeight();
}
}
return spaziamento;
}
public UnionFind getClusters() {
UnionFind unionFind = new UnionByRank(myGraph.getOrder());
kruskalClustering(unionFind);
return unionFind;
}
public int spaziamento() {
UnionFind unionFind = new UnionByRank(myGraph.getOrder());
return kruskalClustering(unionFind);
}
public boolean sameCluster(int a, int b) {
UnionFind unionFind = new UnionByRank(myGraph.getOrder());
kruskalClustering(unionFind);
return unionFind.find(a) == unionFind.find(b);
}
}
Algoritmi_2/Laboratorio/Lab8/Clustering/src/Main.java 0 → 100644
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public class Main {
public static void main(String[] args) {
System.out.println("Hello world!");
}
}
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