PCACut.h

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00001 /*
00002  * This program is free software; you can redistribute it and/or modify
00003  * it under the terms of the GNU General Public License as published by
00004  * the Free Software Foundation; either version 3 of the License, or
00005  * (at your option) any later version.
00006  *
00007  * Written (W) 1999-2008 Gunnar Raetsch
00008  * Written (W) 1999-2008 Soeren Sonnenburg
00009  * Copyright (C) 1999-2008 Fraunhofer Institute FIRST and Max-Planck-Society
00010  */
00011 
00012 #ifndef _CPCACUT__H__
00013 #define _CPCACUT__H__
00014 
00015 #include "lib/config.h"
00016 
00017 #ifdef HAVE_LAPACK
00018 
00019 #include <stdio.h>
00020 
00021 #include "preproc/SimplePreProc.h"
00022 #include "features/Features.h"
00023 #include "lib/common.h"
00024 
00025 
00027 class CPCACut : public CSimplePreProc<DREAL>
00028 {
00029     public:
00035         CPCACut(INT do_whitening=0, double thresh=1e-6);
00036         virtual ~CPCACut();
00037 
00039         virtual bool init(CFeatures* f);
00041         virtual bool load_init_data(FILE* src);
00043         virtual bool save_init_data(FILE* dst);
00045         virtual void cleanup();
00046 
00050         virtual DREAL* apply_to_feature_matrix(CFeatures* f);
00051 
00054         virtual DREAL* apply_to_feature_vector(DREAL* f, INT &len);
00055 
00056     protected:
00058         double* T ;
00060         INT num_dim;
00062         INT num_old_dim;
00064         double *mean ;
00065 
00067         bool initialized;
00068 
00070         INT do_whitening;
00072         double thresh;
00073 };
00074 #endif
00075 #endif

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