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 Chiyuan Zhang 00008 * Copyright (C) 2012 Chiyuan Zhang 00009 */ 00010 00011 #ifndef ECOCAEDDECODER_H__ 00012 #define ECOCAEDDECODER_H__ 00013 00014 00015 #include <shogun/multiclass/ecoc/ECOCSimpleDecoder.h> 00016 #include <shogun/mathematics/Math.h> 00017 00018 namespace shogun 00019 { 00020 00027 class CECOCAEDDecoder: public CECOCSimpleDecoder 00028 { 00029 public: 00031 CECOCAEDDecoder() {} 00032 00034 virtual ~CECOCAEDDecoder() {} 00035 00037 virtual const char* get_name() const { return "ECOCAEDDecoder"; } 00038 00039 00040 protected: 00042 virtual bool binary_decoding() 00043 { 00044 return false; 00045 } 00046 00048 virtual float64_t compute_distance(SGVector<float64_t> outputs, const int32_t *code) 00049 { 00050 float64_t dist = 0; 00051 for (int32_t i=0; i < outputs.vlen; ++i) 00052 dist += (outputs[i]-code[i])*(outputs[i]-code[i]) * CMath::abs(code[i]); 00053 return CMath::sqrt(dist); 00054 } 00055 }; 00056 00057 } /* shogun */ 00058 00059 00060 #endif /* end of include guard: ECOCAEDDECODER_H__ */
