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) 1999-2009 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 
00038 class CPCACut : public CSimplePreProc<float64_t>
00039 {
00040     public:
00046         CPCACut(int32_t do_whitening=0, float64_t thresh=1e-6);
00047         virtual ~CPCACut();
00048 
00050         virtual bool init(CFeatures* f);
00052         virtual bool load_init_data(FILE* src);
00054         virtual bool save_init_data(FILE* dst);
00056         virtual void cleanup();
00057 
00061         virtual float64_t* apply_to_feature_matrix(CFeatures* f);
00062 
00065         virtual float64_t* apply_to_feature_vector(float64_t* f, int32_t &len);
00066 
00068         inline virtual const char* get_name() { return "PCACut"; }
00069 
00070     protected:
00072         double* T ;
00074         int32_t num_dim;
00076         int32_t num_old_dim;
00078         float64_t *mean ;
00079 
00081         bool initialized;
00082 
00084         int32_t do_whitening;
00086         float64_t thresh;
00087 };
00088 #endif
00089 #endif

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