/usr/include/shogun/multiclass/ecoc/ECOCEDDecoder.h is in libshogun-dev 3.2.0-7.3build4.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | /*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Written (W) 2012 Chiyuan Zhang
* Copyright (C) 2012 Chiyuan Zhang
*/
#ifndef ECOCEDDECODER_H__
#define ECOCEDDECODER_H__
#include <shogun/multiclass/ecoc/ECOCSimpleDecoder.h>
#include <shogun/mathematics/Math.h>
namespace shogun
{
/** Euclidean Distance Decoder.
*
* \f[
* ED(q, b_i) = \sqrt{\sum_{j=1}^n (q^j-b_i^j)^2}
* \f]
*/
class CECOCEDDecoder: public CECOCSimpleDecoder
{
public:
/** constructor */
CECOCEDDecoder() {}
/** destructor */
virtual ~CECOCEDDecoder() {}
/** get name */
virtual const char* get_name() const { return "ECOCEDDecoder"; }
protected:
/** whether to turn the output into binary before decoding */
virtual bool binary_decoding()
{
return false;
}
/** compute distance */
virtual float64_t compute_distance(SGVector<float64_t> outputs, const int32_t *code)
{
float64_t dist = 0;
for (int32_t i=0; i < outputs.vlen; ++i)
dist += (outputs[i]-code[i])*(outputs[i]-code[i]);
return CMath::sqrt(dist);
}
};
} /* shogun */
#endif /* end of include guard: ECOCEDDECODER_H__ */
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