DimensionReductionPreprocessor.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) 2011 Sergey Lisitsyn
00008  * Copyright (C) 2011 Berlin Institute of Technology and Max-Planck-Society
00009  */
00010 
00011 #ifndef DIMENSIONREDUCTIONPREPROCESSOR_H_
00012 #define DIMENSIONREDUCTIONPREPROCESSOR_H_
00013 
00014 #include <shogun/preprocessor/DensePreprocessor.h>
00015 #include <shogun/converter/EmbeddingConverter.h>
00016 #include <shogun/features/Features.h>
00017 #include <shogun/distance/Distance.h>
00018 
00019 namespace shogun
00020 {
00021 
00022 class CFeatures;
00023 class CDistance;
00024 class CKernel;
00025 
00030 class CDimensionReductionPreprocessor: public CDensePreprocessor<float64_t>
00031 {
00032 public:
00033 
00035     CDimensionReductionPreprocessor();
00036 
00042     CDimensionReductionPreprocessor(CEmbeddingConverter* converter);
00043 
00045     virtual ~CDimensionReductionPreprocessor();
00046 
00051     virtual bool init(CFeatures* data);
00052 
00057     virtual void cleanup();
00058 
00062     virtual SGMatrix<float64_t> apply_to_feature_matrix(CFeatures* features);
00063 
00067     virtual SGVector<float64_t> apply_to_feature_vector(SGVector<float64_t> vector)
00068     {
00069         return vector;
00070     }
00071 
00073     virtual const char* get_name() const { return "DimensionReductionPreprocessor"; };
00074 
00076     virtual EPreprocessorType get_type() const;
00077 
00081     void set_target_dim(int32_t dim);
00082 
00086     int32_t get_target_dim() const;
00087 
00091     void set_distance(CDistance* distance);
00092 
00096     CDistance* get_distance() const;
00097 
00101     void set_kernel(CKernel* kernel);
00102 
00106     CKernel* get_kernel() const;
00107 
00108 protected:
00109 
00111     void init();
00112 
00113 protected:
00114 
00116     int32_t m_target_dim;
00117 
00119     CDistance* m_distance;
00120 
00122     CKernel* m_kernel;
00123 
00125     CEmbeddingConverter* m_converter;
00126 };
00127 }
00128 
00129 #endif /* DIMENSIONREDUCTIONPREPROCESSOR_H_ */
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