Examples of net.myrrix.online.generation.Generation

net.myrrix.online.generation.Generation
Encapsulates one generation of the underlying recommender's model. The data in this object is quite specific to the underlying Alternating Least Squares algorithm. A generation contains:
- X, the user-feature matrix
- Y, the item-feature matrix
- XLeftInverse, X's left inverse
- YTRightInverse, the right inverse of Y transpose
- numFeatures, the column dimension of X and Y
- knownItemIDs, the item IDs already associated to each user
- itemTagIDs, IDs of "users" that are really item tags
- userTagIDs, IDs of "items" that are really user tags
- clusters of item IDs (in distributed mode), with centroids
- clusters of user IDs (in distributed mode), with centroids
@author Sean Owen @since 1.0 @see net.myrrix.online.factorizer.MatrixFactorizer

    }
  }


  @Override
  public int getNumItemClusters() throws NotReadyException {
    Generation generation = getCurrentGeneration();
    Collection<IDCluster> clusters = generation.getItemClusters();
    if (clusters == null || clusters.isEmpty()) {
      throw new UnsupportedOperationException();
    }
    Lock lock = generation.getItemClustersLock().readLock();
    lock.lock();
    try {
      return clusters.size();
    } finally {
      lock.unlock();

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    }
  }


  @Override
  public FastIDSet getUserCluster(int n) throws NotReadyException {
    Generation generation = getCurrentGeneration();
    List<IDCluster> clusters = generation.getUserClusters();
    if (clusters == null || clusters.isEmpty()) {
      throw new UnsupportedOperationException();
    }
    Lock lock = generation.getUserClustersLock().readLock();
    FastIDSet members;
    lock.lock();
    try {
      members = clusters.get(n).getMembers();
    } finally {

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    }
  }


  @Override
  public FastIDSet getItemCluster(int n) throws NotReadyException {
    Generation generation = getCurrentGeneration();
    List<IDCluster> clusters = generation.getItemClusters();
    if (clusters == null || clusters.isEmpty()) {
      throw new UnsupportedOperationException();
    }
    Lock lock = generation.getItemClustersLock().readLock();
    FastIDSet members;
    lock.lock();
    try {
      members = clusters.get(n).getMembers();
    } finally {

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