+ erste Versuche mit Weka

Signed-off-by: Johannes Theiner <j.theiner@live.de>

src/main/java/de/hsel/spm/baudas/analysis/ShoppingTimes.java

@@ -0,0 +1,58 @@
+package de.hsel.spm.baudas.analysis;
+
+import javafx.util.Pair;
+import weka.core.Instances;
+import weka.filters.Filter;
+import weka.filters.unsupervised.attribute.Remove;
+
+import java.io.File;
+import java.util.Map;
+
+/**
+ * @author Johannes Theiner
+ * @version 0.1
+ * @since 0.1
+ **/
+public class ShoppingTimes implements Analysis<Map<Pair<String, String>, Integer>>{
+
+    private Instances instances;
+    private Map<Pair<String, String>, Integer> result;
+
+    public ShoppingTimes(File file) {
+        instances = load(file);
+    }
+
+
+    @Override
+    public Map<Pair<String, String>, Integer> getResult() {
+        if(result == null) {
+            int dayIndex = 0;
+            int hourIndex = 1;
+            int[] keepIndexes = new int[]{5, 6};
+
+            Remove remove = new Remove();
+            try {
+                remove.setAttributeIndicesArray(keepIndexes);
+                remove.setInvertSelection(true);
+                remove.setInputFormat(instances);
+                instances = Filter.useFilter(instances, remove);
+            } catch (Exception ex) {
+                ex.printStackTrace();
+            }
+
+
+
+
+            /*Map<Pair<String, String>, Integer> hours = new HashMap<>();
+            AttributeStats stats = instances.attributeStats(hourIndex);
+            for(int i = 0; i <= instances.attribute(hourIndex).numValues() - 1; i++) {
+                Pair<String, String> pair = new Pair<>(instances.attribute(hourIndex).value(i), instances.attribute(0).value(i));
+                hours.put(pair, stats.nominalCounts[i]);
+            }
+            result = hours;*/
+
+
+        }
+        return result;
+    }
+}

src/test/java/de/hsel/spm/baudas/analysis/ShoppingTimesTest.java

@@ -0,0 +1,40 @@
+package de.hsel.spm.baudas.analysis;
+
+import javafx.util.Pair;
+import org.junit.jupiter.api.Test;
+
+import java.io.File;
+import java.net.URL;
+import java.time.Duration;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicReference;
+
+import static org.junit.jupiter.api.Assertions.assertTimeout;
+
+/**
+ * @author Johannes Theiner
+ * @version 0.1
+ * @since 0.1
+ **/
+public class ShoppingTimesTest {
+
+    //TODO: mehr Tests
+
+    @Test
+    public void test100() {
+        URL url = getClass().getClassLoader().getResource("kd100.csv");
+        assert url != null;
+        ShoppingTimes overview = new ShoppingTimes(new File(url.getFile()));
+
+        AtomicReference<Map<Pair<String, String>, Integer>> results = new AtomicReference<>();
+
+        assertTimeout(Duration.ofMillis(450), () -> results.set(overview.getResult()));
+        /*for(Pair<String, String> pair : results.get().keySet()) {
+            System.out.println(pair);
+        }*/
+
+
+        //assertEquals(21, results.get().get(new Pair<>("Montag", ">17 Uhr")));
+        //TODO: mehr Tests
+    }
+}