SHOGUN
v3.2.0
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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) 2011-2013 Sergey Lisitsyn 00008 * Copyright (C) 2011-2013 Sergey Lisitsyn 00009 */ 00010 00011 #include <shogun/converter/NeighborhoodPreservingEmbedding.h> 00012 #include <shogun/lib/config.h> 00013 #ifdef HAVE_EIGEN3 00014 #include <shogun/io/SGIO.h> 00015 #include <shogun/kernel/LinearKernel.h> 00016 #include <shogun/lib/tapkee/tapkee_shogun.hpp> 00017 00018 using namespace shogun; 00019 00020 CNeighborhoodPreservingEmbedding::CNeighborhoodPreservingEmbedding() : 00021 CLocallyLinearEmbedding() 00022 { 00023 } 00024 00025 CNeighborhoodPreservingEmbedding::~CNeighborhoodPreservingEmbedding() 00026 { 00027 } 00028 00029 const char* CNeighborhoodPreservingEmbedding::get_name() const 00030 { 00031 return "NeighborhoodPreservingEmbedding"; 00032 } 00033 00034 CFeatures* CNeighborhoodPreservingEmbedding::apply(CFeatures* features) 00035 { 00036 CKernel* kernel = new CLinearKernel((CDotFeatures*)features,(CDotFeatures*)features); 00037 TAPKEE_PARAMETERS_FOR_SHOGUN parameters; 00038 parameters.n_neighbors = m_k; 00039 parameters.eigenshift = m_nullspace_shift; 00040 parameters.method = SHOGUN_NEIGHBORHOOD_PRESERVING_EMBEDDING; 00041 parameters.target_dimension = m_target_dim; 00042 parameters.kernel = kernel; 00043 parameters.features = (CDotFeatures*)features; 00044 CDenseFeatures<float64_t>* embedding = tapkee_embed(parameters); 00045 SG_UNREF(kernel); 00046 return embedding; 00047 } 00048 00049 #endif /* HAVE_EIGEN3 */