PCA.hpp

/*
 * PCA.hpp
 * 
 * Copyright 2018 Fernando Pujaico Rivera <fernando.pujaico.rivera@gmail.com>
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 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 GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 * 
 */
 
#ifndef __PDS_PCA_HPP__
#define __PDS_PCA_HPP__
 
 
#include <Pds/Vector>
#include <Pds/IterationConf>
 
#include <sstream>      // std::ostringstream
 
namespace Pds{
 
class PCA
{
private:
    Pds::Vector Lambda;
 
    Pds::Matrix V;
 
public:
 
    PCA(void);
        
    PCA(const char filename[]);
    
    
    PCA(const std::string &filename);
    
    PCA(const Pds::PCA &B);
 
    PCA(const Pds::Matrix &X);
 
    ~PCA();
 
 
public:
 
    Pds::Vector Transform(const Pds::Vector &x, unsigned int N) const;
 
    Pds::Matrix Transform(const Pds::Matrix &X, unsigned int N) const;
 
public:
 
    bool ExportFile(const std::string &filename) const;
 
public:
 
    bool IsEmpty(void) const;
 
    bool IsNotEmpty(void) const;
 
public:
 
    Pds::PCA& operator = (const Pds::PCA &B);
    
    bool Copy(const Pds::PCA &B);
    
 
public:
 
    void MakeEmpty(void);
    
    unsigned int GetN(void) const;
    
    Pds::Vector GetLambda(void) const;
    
    Pds::Matrix GetV(void) const;
    
    void Print(std::string str="") const;
    
}; // Class PCA
 
} // namespace Pds
 
 
#endif