rca.h

/* 
 * Copyright (C) 2006-2013  Music Technology Group - Universitat Pompeu Fabra
 *
 * This file is part of Gaia
 * 
 * Gaia is free software: you can redistribute it and/or modify it under 
 * the terms of the GNU Affero General Public License as published by the Free 
 * Software Foundation (FSF), either version 3 of the License, or (at your 
 * option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT 
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more 
 * details.
 * 
 * You should have received a copy of the Affero GNU General Public License
 * version 3 along with this program.  If not, see http://www.gnu.org/licenses/
 */

#ifndef GAIA_RCA_H
#define GAIA_RCA_H

#include "analyzer.h"
#include "Eigen/Core"

namespace gaia2 {

class RCA : public Analyzer {

 protected:
  QString _resultName;
  int _targetDimension;
  QString _classFile, _className;
  QMap<QString, QString> _classMap;

  Eigen::MatrixXd computeCovarianceMatrix(const QList<const PointArray*>& chunklets,
                                          const Region& region) const;

  Eigen::MatrixXd whitenMatrix(const Eigen::MatrixXd& cov) const;


 public:
  RCA(const ParameterMap& params);
  virtual ~RCA() {};

  Transformation analyze(const DataSet* dataset, const Region& region) const;


  // static helper functions
  static QList<const PointArray*> cleanChunklets(QList<PointArray*>& chunklets);

  static QList<const PointArray*> getChunkletsFromMap(const QMap<QString, QString>& filename,
                                                      const DataSet* inputDataSet);

  static QList<const PointArray*> getChunkletsFromFile(const QString& filename,
                                                       const DataSet* inputDataSet);

  static QList<const PointArray*> getChunkletsFromLabel(const QString& label,
                                                        const DataSet* inputDataSet);



};

}

#endif // GAIA_RCA_H