Exemple #1
0
  public static void makeCondFP(trie tr, String down, String[] data, int size, int minsup) {
    trie cond = new trie();
    int count = 0;
    for (int i = 1; i <= size; i++) {
      if (checkContain(down, data[i]) == true) {
        count++;
      }
    }
    if (count >= minsup) {
      for (int i = 1; i <= size; i++) {

        if (checkContain(down, data[i]) == true) {
          cond.insert(data[i]);
        }
      }
    }
    System.out.println("CondFPTree of  " + down);
    cond.show(minsup);
  }
Exemple #2
0
  public static void main(String[] args) {

    //// I shall master R programming
    Scanner s = new Scanner(System.in);
    System.out.println("Enter no of transactions");
    int p = s.nextInt();

    String[] data = new String[p + 1];

    int arr[] = new int[10];

    for (int i = 0; i <= 9; i++) {
      arr[i] = 0;
    }
    // s.delimiter();
    for (int i = 1; i <= p; i++) {
      String gh;
      gh = s.nextLine();
      data[i] = gh;
      char[] buff = new char[10];
      buff = gh.toCharArray();

      for (int j = 0; j < buff.length; j++) {
        int fg = (int) buff[j] - 48;
        arr[fg]++;
      }
    }
    System.out.println("Enter Min_support");
    int minsup = s.nextInt();
    for (int j = 1; j <= 9; j++) {
      if (arr[j] < minsup) {
        arr[j] = -1;
      }
    }

    for (int j = 1; j <= p; j++) {
      char[] buff = new char[10];
      buff = data[j].toCharArray();
      String fin = "";
      for (int h = 0; h < buff.length; h++) {
        int fg = ((int) buff[h]) - 48;
        if (arr[fg] != -1) {
          fin += buff[h];
        }
      }
      data[j] = fin;
      data[j] = sort(data[j], arr);
    }

    /////////// BAsic Stuff done////////////////////////////////////

    ///// FP TREE CONSTRUCTION
    trie tr = new trie();

    for (int j = 1; j <= p; j++) {
      tr.insert(data[j]);
    }
    tr.show(minsup);

    //// FP TREE Construction Done\\\\\\

    //// Now FP TREE Itemset Generation\\\\

    // trie x=new trie();

    int max = 5;
    int[] mark = new int[max + 1];
    int[] yoyo = new int[max + 1];
    for (int i = 0; i <= max; i++) {
      yoyo[i] = i + 1;
      mark[i] = 0;
    }

    int end = (int) Math.pow(2, max);
    for (int i = 1; i < end; i++) {
      mark = bringme(i, max);

      String up = "", down = "";

      for (int j = 0; j < max; j++) {

        if (mark[j] == 1) down += yoyo[j];
      }

      makeCondFP(tr, down, data, p, minsup);
    }
  }