PruneVarSubMean.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 _CPRUNE_VAR_SUB_MEAN__H__
00013 #define _CPRUNE_VAR_SUB_MEAN__H__
00014 
00015 #include "preproc/SimplePreProc.h"
00016 #include "features/Features.h"
00017 #include "features/SimpleFeatures.h"
00018 #include "lib/common.h"
00019 
00020 #include <stdio.h>
00021 
00028 class CPruneVarSubMean : public CSimplePreProc<float64_t>
00029 {
00030     public:
00035         CPruneVarSubMean(bool divide=true);
00036         virtual ~CPruneVarSubMean();
00037 
00039         virtual bool init(CFeatures* f);
00040 
00042         virtual bool load_init_data(FILE* src);
00044         virtual bool save_init_data(FILE* dst);
00045 
00047         virtual void cleanup();
00048 
00052         virtual float64_t* apply_to_feature_matrix(CFeatures* f);
00053 
00056         virtual float64_t* apply_to_feature_vector(float64_t* f, int32_t &len);
00057 
00059         inline virtual const char* get_name() { return "PruneVarSubMean"; }
00060 
00061     protected:
00063         int32_t* idx;
00065         float64_t* mean;
00067         float64_t* std;
00069         int32_t num_idx;
00071         bool divide_by_std;
00072 
00074         bool initialized;
00075 };
00076 #endif

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