コード例 #1
0
 /**
  * Get the list of ids of sequences in this sequence database
  *
  * @return the list of sequence ids.
  */
 public Set<Integer> getSequenceIDs() {
   Set<Integer> set = new HashSet<Integer>();
   for (Sequence sequence : getSequences()) {
     set.add(sequence.getId());
   }
   return set;
 }
コード例 #2
0
 /**
  * Get a string representation of this sequence database
  *
  * @return the string representation
  */
 @Override
 public String toString() {
   StringBuilder r = new StringBuilder();
   for (Sequence sequence : sequences) {
     r.append(sequence.getId());
     r.append(":  ");
     r.append(sequence.toString());
     r.append('\n');
   }
   return r.toString();
 }
コード例 #3
0
  /**
   * It adds a sequence from an array of string that we have to interpret
   *
   * @param integers
   * @param sequenceID
   */
  public void addSequence(String[] integers, int sequenceID) {
    long timestamp = -1;
    Sequence sequence = new Sequence(sequences.size());
    sequence.setID(sequenceID);
    Itemset itemset = new Itemset();
    int inicio = 0;
    Map<Item, Boolean> counted = new HashMap<Item, Boolean>();

    for (int i = inicio; i < integers.length; i++) {
      if (integers[i].codePointAt(0) == '<') { // Timestamp
        String value = integers[i].substring(1, integers[i].length() - 1);
        timestamp = Long.parseLong(value);
        itemset.setTimestamp(timestamp);
      } else if (integers[i].equals("-1")) { // end of an itemset
        long time = itemset.getTimestamp() + 1;
        sequence.addItemset(itemset);
        itemset = new Itemset();
        itemset.setTimestamp(time);
      } else if (integers[i].equals("-2")) { // end of a sequence
        sequences.add(sequence);
      } else {
        // extract the value for an item
        Item item = itemFactory.getItem(Integer.parseInt(integers[i]));
        if (counted.get(item) == null) {
          counted.put(item, Boolean.TRUE);
          BitSet appearances = frequentItems.get(item);
          if (appearances == null) {
            appearances = new BitSet();
            frequentItems.put(item, appearances);
          }
          appearances.set(sequence.getId());
        }
        itemset.addItem(item);
      }
    }
  }