KMeansModel.java
/*
* Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except
* in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.wso2.extension.siddhi.execution.streamingml.clustering.kmeans.util;
import org.apache.log4j.Logger;
import java.io.Serializable;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
/**
* stores info about the kmeans model
*/
public class KMeansModel implements Serializable {
private static final long serialVersionUID = 7997333339345312740L;
private List<Cluster> clusterList;
private boolean trained;
private static final Logger logger = Logger.getLogger(KMeansModel.class.getName());
public KMeansModel() {
clusterList = new LinkedList<>();
}
public boolean isTrained() {
return trained;
}
void setTrained() {
this.trained = true;
}
synchronized List<Cluster> getClusterList() {
return clusterList;
}
synchronized void setClusterList(List<Cluster> clusterList) {
this.clusterList = clusterList;
}
public synchronized void clear() {
clusterList.clear();
}
synchronized void clearClusterMembers() {
for (Cluster c: clusterList) {
if (c != null) {
c.clearDataPointsInCluster();
}
}
}
synchronized boolean contains(DataPoint x) {
for (Cluster c: clusterList) {
if (c.getCentroid().equals(x)) {
return true;
}
}
return false;
}
synchronized void add(DataPoint x) {
if (logger.isDebugEnabled()) {
logger.debug("adding a new cluster with centroid " + Arrays.toString(x.getCoordinates()));
}
Cluster c = new Cluster(x);
clusterList.add(c);
}
synchronized int size() {
return clusterList.size();
}
synchronized double[] getCoordinatesOfCentroidOfCluster(int index) {
return clusterList.get(index).getCentroid().getCoordinates();
}
synchronized String getModelInfo() {
StringBuilder s = new StringBuilder();
for (Cluster c: clusterList) {
s.append(Arrays.toString(c.getCentroid().getCoordinates())).append(" with members : ")
.append(c.getMemberInfo()).append("\n");
}
return s.toString();
}
}