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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 <shogun/preprocessor/DensePreprocessor.h>
00016 #include <shogun/features/Features.h>
00017 #include <shogun/lib/common.h>
00018 
00019 #include <stdio.h>
00020 
00021 namespace shogun
00022 {
00029 class CPruneVarSubMean : public CDensePreprocessor<float64_t>
00030 {
00031     public:
00036         CPruneVarSubMean(bool divide=true);
00037 
00039         virtual ~CPruneVarSubMean();
00040 
00042         virtual bool init(CFeatures* features);
00043 
00045         virtual void cleanup();
00046 
00050         virtual SGMatrix<float64_t> apply_to_feature_matrix(CFeatures* features);
00051 
00054         virtual SGVector<float64_t> apply_to_feature_vector(SGVector<float64_t> vector);
00055 
00057         virtual const char* get_name() const { return "PruneVarSubMean"; }
00058 
00060         virtual EPreprocessorType get_type() const { return P_PRUNEVARSUBMEAN; }
00061 
00062     private:
00063         void init();
00064         void register_parameters();
00065 
00066     protected:
00068         SGVector<int32_t> m_idx;
00070         SGVector<float64_t> m_mean;
00072         SGVector<float64_t> m_std;
00074         int32_t m_num_idx;
00076         bool m_divide_by_std;
00077 
00079         bool m_initialized;
00080 };
00081 }
00082 #endif
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