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StochasticProximityEmbedding.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) 2012-2013 Fernando José Iglesias García
00008  * Copyright (C) 2012-2013 Fernando José Iglesias García
00009  */
00010 
00011 #ifndef STOCHASTICPROXIMITYEMBEDDING_H_
00012 #define STOCHASTICPROXIMITYEMBEDDING_H_
00013 #include <shogun/lib/config.h>
00014 #ifdef HAVE_EIGEN3
00015 #include <shogun/converter/EmbeddingConverter.h>
00016 #include <shogun/features/Features.h>
00017 #include <shogun/distance/Distance.h>
00018 
00019 namespace shogun
00020 {
00021 
00023 enum ESPEStrategy
00024 {
00025     SPE_GLOBAL,
00026     SPE_LOCAL,
00027 };
00028 
00063 class CStochasticProximityEmbedding : public CEmbeddingConverter
00064 {
00065 
00066     public:
00067 
00069         CStochasticProximityEmbedding();
00070 
00072         virtual ~CStochasticProximityEmbedding();
00073 
00079         virtual CFeatures* apply(CFeatures* features);
00080 
00085         void set_k(int32_t k);
00086 
00091         int32_t get_k() const;
00092 
00097         void set_strategy(ESPEStrategy strategy);
00098 
00103         ESPEStrategy get_strategy() const;
00104 
00109         void set_tolerance(float32_t tolerance);
00110 
00115         int32_t get_tolerance() const;
00116 
00121         void set_nupdates(int32_t nupdates);
00122 
00127         int32_t get_nupdates() const;
00128 
00133         void set_max_iteration(const int32_t max_iteration);
00134 
00139         int32_t get_max_iteration() const;
00140 
00142         virtual const char* get_name() const;
00143 
00144     private:
00145 
00147         void init();
00148 
00153         virtual CDenseFeatures< float64_t >* embed_distance(CDistance* distance);
00154 
00155     private:
00156 
00158         ESPEStrategy m_strategy;
00159 
00161         int32_t m_k;
00162 
00164         float32_t m_tolerance;
00165 
00167         int32_t m_nupdates;
00168 
00170         int32_t m_max_iteration;
00171 
00172 };
00173 
00174 } /* namespace shogun */
00175 
00176 
00177 #endif /* HAVE_EIGEN3 */
00178 #endif /* STOCHASTICPROXIMITYEMBEDDING_H_ */
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