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) 2013 Soumyajit De 00008 */ 00009 00010 #include <shogun/lib/common.h> 00011 #include <shogun/lib/SGVector.h> 00012 #include <shogun/mathematics/Random.h> 00013 #include <shogun/mathematics/linalg/ratapprox/tracesampler/NormalSampler.h> 00014 00015 namespace shogun 00016 { 00017 00018 CNormalSampler::CNormalSampler() 00019 : CTraceSampler() 00020 { 00021 SG_GCDEBUG("%s created (%p)\n", this->get_name(), this) 00022 } 00023 00024 CNormalSampler::CNormalSampler(index_t dimension) 00025 : CTraceSampler(dimension) 00026 { 00027 SG_GCDEBUG("%s created (%p)\n", this->get_name(), this) 00028 } 00029 00030 CNormalSampler::~CNormalSampler() 00031 { 00032 SG_GCDEBUG("%s destroyed (%p)\n", this->get_name(), this) 00033 } 00034 00035 void CNormalSampler::precompute() 00036 { 00037 m_num_samples=1; 00038 } 00039 00040 SGVector<float64_t> CNormalSampler::sample(index_t idx) const 00041 { 00042 // ignore idx since it doesnt matter, all samples are independent 00043 SGVector<float64_t> s(m_dimension); 00044 00045 for (index_t i=0; i<m_dimension; ++i) 00046 s[i]=sg_rand->std_normal_distrib(); 00047 00048 return s; 00049 } 00050 00051 }