Beispiel #1
0
  /** Test of learn method, of class ARM. */
  @Test
  public void testLearn() {
    System.out.println("learn");
    ARM instance = new ARM(itemsets, 3);
    instance.learn(0.5, System.out);
    List<AssociationRule> rules = instance.learn(0.5);
    assertEquals(9, rules.size());

    assertEquals(0.6, rules.get(0).support, 1E-2);
    assertEquals(0.75, rules.get(0).confidence, 1E-2);
    assertEquals(1, rules.get(0).antecedent.length);
    assertEquals(3, rules.get(0).antecedent[0]);
    assertEquals(1, rules.get(0).consequent.length);
    assertEquals(2, rules.get(0).consequent[0]);

    assertEquals(0.3, rules.get(4).support, 1E-2);
    assertEquals(0.6, rules.get(4).confidence, 1E-2);
    assertEquals(1, rules.get(4).antecedent.length);
    assertEquals(1, rules.get(4).antecedent[0]);
    assertEquals(1, rules.get(4).consequent.length);
    assertEquals(2, rules.get(4).consequent[0]);

    assertEquals(0.3, rules.get(8).support, 1E-2);
    assertEquals(0.6, rules.get(8).confidence, 1E-2);
    assertEquals(1, rules.get(8).antecedent.length);
    assertEquals(1, rules.get(8).antecedent[0]);
    assertEquals(2, rules.get(8).consequent.length);
    assertEquals(3, rules.get(8).consequent[0]);
    assertEquals(2, rules.get(8).consequent[1]);
  }
Beispiel #2
0
  /** Test of learn method, of class ARM. */
  @Test
  public void testLearnKosarak() {
    System.out.println("kosarak");

    List<int[]> dataList = new ArrayList<int[]>(1000);

    try {
      InputStream stream = getClass().getResourceAsStream("/smile/data/transaction/kosarak.dat");
      BufferedReader input = new BufferedReader(new InputStreamReader(stream));

      String line;
      for (int nrow = 0; (line = input.readLine()) != null; nrow++) {
        if (line.trim().isEmpty()) {
          continue;
        }

        String[] s = line.split(" ");

        Set<Integer> items = new HashSet<Integer>();
        for (int i = 0; i < s.length; i++) {
          items.add(Integer.parseInt(s[i]));
        }

        int j = 0;
        int[] point = new int[items.size()];
        for (int i : items) {
          point[j++] = i;
        }

        dataList.add(point);
      }
    } catch (IOException ex) {
      System.err.println(ex);
    }

    int[][] data = dataList.toArray(new int[dataList.size()][]);

    int n = Math.max(data);
    System.out.format("%d transactions, %d items\n", data.length, n);

    ARM instance = new ARM(data, 0.003);
    long numRules = instance.learn(0.5, System.out);
    System.out.format("%d association rules discovered\n", numRules);
    assertEquals(17932, numRules);
  }
Beispiel #3
0
  /** Test of learn method, of class ARM. */
  @Test
  public void testLearnPima() {
    System.out.println("pima");

    List<int[]> dataList = new ArrayList<int[]>(1000);

    try {
      InputStream stream =
          getClass().getResourceAsStream("/smile/data/transaction/pima.D38.N768.C2");
      BufferedReader input = new BufferedReader(new InputStreamReader(stream));

      String line;
      for (int nrow = 0; (line = input.readLine()) != null; nrow++) {
        if (line.trim().isEmpty()) {
          continue;
        }

        String[] s = line.split(" ");

        int[] point = new int[s.length];
        for (int i = 0; i < s.length; i++) {
          point[i] = Integer.parseInt(s[i]);
        }

        dataList.add(point);
      }
    } catch (IOException ex) {
      System.err.println(ex);
    }

    int[][] data = dataList.toArray(new int[dataList.size()][]);

    int n = Math.max(data);
    System.out.format("%d transactions, %d items\n", data.length, n);

    ARM instance = new ARM(data, 20);
    long numRules = instance.learn(0.9, System.out);
    System.out.format("%d association rules discovered\n", numRules);
    assertEquals(6803, numRules);
    assertEquals(6803, instance.learn(0.9).size());
  }