WeekOverview analysis working
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*.iml
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.idea
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.project
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.project
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target
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package de.hsel.spm.baudas;
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/* Beispielprogramm, um WeKa in eclipse zu verwenden.
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Die Rohdaten liegen im CSV-Format vor.
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Die Rohdaten enthalten die folgenden 26 Attribute,
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0..9 Kundendaten und Einkaufsverhalten
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10 Einkaufssumme
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11..25 gekaufte Waren
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Hier sind nur ein paar Beispiele zu sehen, wie man die Analysen verwenden kann.
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Weitere Einstellungen (falls n<EFBFBD>tig) selbst recherchieren!
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*/
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import java.io.*;
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import weka.associations.Apriori;
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import weka.clusterers.SimpleKMeans;
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import weka.core.Instances;
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import weka.core.converters.CSVLoader;
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import weka.filters.Filter;
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import weka.filters.unsupervised.attribute.NumericCleaner;
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import weka.filters.unsupervised.attribute.NumericToNominal;
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public class WekaBeispiel {
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void findCluster(Instances daten, int anz) throws Exception {
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SimpleKMeans model = new SimpleKMeans();
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model.setNumClusters(anz);
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model.buildClusterer(daten);
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System.out.println(model);
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}
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void makeApriori(Instances daten) throws Exception {
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// umwandeln in gekauft / nicht gekauft (0/1)
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NumericCleaner nc = new NumericCleaner();
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nc.setMaxThreshold(1.0); // Schwellwert auf 1 setzen
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nc.setMaxDefault(1.0); // alles ueber Schwellwert durch 1 ersetzen
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nc.setInputFormat(daten);
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daten = Filter.useFilter(daten, nc); // Filter anwenden.
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// Die Daten als nominale und nicht als numerische Daten setzen
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NumericToNominal num2nom = new NumericToNominal();
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num2nom.setAttributeIndices("first-last");
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num2nom.setInputFormat(daten);
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daten = Filter.useFilter(daten, num2nom);
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Apriori model = new Apriori();
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model.buildAssociations(daten);
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System.out.println(model);
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}
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public static void main(String[] args) throws Exception {
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// Eigenen Dateipfad eintragen, nicht meinen nehmen ;-)
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String path = "/home/julian/IntellijProjects/Softwareprojektmanagement/src/test/resources/";
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String roh = path + "kd100.csv";
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Instances alleDaten, nurWaren, nurKunden;
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WekaBeispiel dt = new WekaBeispiel();
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// CSV-Datei laden
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CSVLoader loader = new CSVLoader();
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loader.setSource(new File(roh));
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alleDaten = loader.getDataSet();
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// 0 durch ? ersetzen, um f<EFBFBD>r die Auswertung nur die Waren zu
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// ber<EFBFBD>cksichtigen, die gekauft wurden
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NumericCleaner nc = new NumericCleaner();
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nc.setMinThreshold(1.0); // Schwellwert auf 1 setzen
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nc.setMinDefault(Double.NaN); // alles unter Schwellwert durch ? ersetzen
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nc.setInputFormat(alleDaten);
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alleDaten = Filter.useFilter(alleDaten, nc); // Filter anwenden. Wichtig: alleDaten =
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// Clusteranalyse mit 5 Clustern <EFBFBD>ber alle Daten
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dt.findCluster(alleDaten, 5);
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// Assoziationsanalyse <EFBFBD>ber alle Daten - Sinn zweifelhaft ;)
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dt.makeApriori(alleDaten);
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// Kundendaten rausnehmen, nur Warenk<EFBFBD>rbe stehen lassen
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nurWaren = new Instances(alleDaten);
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for (int i = 0; i < 11; i++) {
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nurWaren.deleteAttributeAt(0); // ein einzelnes Attribut rausnehmen
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}
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// Assoziationsanalyse der gekauften Waren
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dt.makeApriori(nurWaren);
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// Waren rausnehmen, nur Kundendaten stehen lassen
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nurKunden = new Instances(alleDaten);
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for (int i = 0; i < 16; i++) {
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nurKunden.deleteAttributeAt(10); // ein einzelnes Attribut rausnehmen
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}
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// Clusteranalyse mit 3 Clustern <EFBFBD>ber die Kundendaten
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dt.findCluster(nurKunden, 3);
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}
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}
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@ -8,7 +8,7 @@ import java.io.File;
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import java.io.IOException;
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/**
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* base interface for analysis
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* base interface for analysis.
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*
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* @author Johannes Theiner
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* @version 0.1
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@ -19,7 +19,7 @@ public interface Analysis<T> {
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/**
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* loads data from csv file
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* loads data from csv file.
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*
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* @param file File to analyze
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* @return loaded data in weka format
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@ -37,7 +37,7 @@ public interface Analysis<T> {
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}
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/**
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* result of the analysis
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* result of the analysis.
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*
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* @return result as T
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*/
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@ -1,73 +1,63 @@
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package de.hsel.spm.baudas.analysis;
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import org.jetbrains.annotations.Nullable;
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import weka.core.Instance;
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import weka.core.Instances;
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import weka.filters.Filter;
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import weka.filters.unsupervised.attribute.Remove;
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import java.io.File;
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import java.util.AbstractMap;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* Week Overview Analysis
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* Week Overview Analysis.
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*
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* @author Julian Hinxlage
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* @version 0.1
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* @since 0.1
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**/
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public class WeekOverview implements Analysis<Map<String, Integer>> {
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public class WeekOverview implements Analysis<Map<String, Map.Entry<Double, Integer>>> {
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private Instances instances;
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private Map<String, Integer> result;
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private Map<String, Map.Entry<Double, Integer>> result;
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public WeekOverview(File file) {
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result = new HashMap<String, Integer>();
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result = new HashMap<>();
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instances = load(file);
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}
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@Override
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public Map<String, Integer> getResult() {
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public Map<String, Map.Entry<Double, Integer>> getResult() {
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int[] keepIndexes = new int[]{5, 10};
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int dayIndex = 0;
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int amountIndex = 1;
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int dayIndex = 5;
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int amountIndex = 10;
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int startArticles = 11;
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int endArticles = 25;
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try {
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//Remove all other attributes
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Remove remove = new Remove();
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remove.setAttributeIndicesArray(keepIndexes);
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remove.setInvertSelection(true);
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remove.setInputFormat(instances);
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instances = Filter.useFilter(instances, remove);
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} catch (Exception ex) {
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ex.printStackTrace();
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}
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for (int i = 0; i < instances.numInstances(); i++) {
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Instance instance = instances.get(i);
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double amount = instance.value(amountIndex);
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String day = instance.stringValue(dayIndex);
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for (int i = 0; i < instances.attribute(dayIndex).numValues(); i++) {
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String day = instances.attribute(dayIndex).value(i);
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System.out.println(day);
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for (int j = 0; j < instances.attribute(amountIndex).numValues(); j++) {
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String amount = instances.attribute(amountIndex).value(j);
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System.out.println(amount);
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int x = Integer.parseInt(amount);
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if(!result.containsKey(day)){
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result.put(day,0);
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}
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result.put(day,result.get(day) + x);
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int count = 0;
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for (int j = startArticles; j < endArticles; j++) {
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count += (int) instance.value(j);
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}
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if (!result.containsKey(day)) {
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result.put(day, new AbstractMap.SimpleEntry<>(0.0, 0));
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}
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result.put(day,
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new AbstractMap.SimpleEntry<>(
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result.get(day).getKey() + amount,
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result.get(day).getValue() + count
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)
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);
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}
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return result;
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}
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}
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@ -1,4 +1,4 @@
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package de.hsel.spm.baudas;
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package de.hsel.spm.baudas.Analysis;
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import de.hsel.spm.baudas.analysis.WeekOverview;
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import org.junit.jupiter.api.Test;
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public class WeekOverviewTest {
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@Test
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public void test(){
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public void test() {
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WeekOverview overview = new WeekOverview(new File(getClass().getClassLoader().getResource("kd100.csv").getFile()));
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Map<String, Integer> result = overview.getResult();
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Map<String, Map.Entry<Double, Integer>> result = overview.getResult();
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for(Map.Entry<String, Integer> i : result.entrySet()){
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System.out.println(i.getKey() + " = " + i.getValue());
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for (Map.Entry<String, Map.Entry<Double, Integer>> i : result.entrySet()) {
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System.out.println(i.getKey() + " = " + i.getValue().getKey() + "€ " + i.getValue().getValue());
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}
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}
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