/usr/include/shogun/kernel/IdentityKernelNormalizer.h is in libshogun-dev 1.1.0-4ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* 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) 2008-2009 Soeren Sonnenburg
* Copyright (C) 2008-2009 Fraunhofer Institute FIRST and Max-Planck-Society
*/
#ifndef _IDENTITYKERNELNORMALIZER_H___
#define _IDENTITYKERNELNORMALIZER_H___
#include <shogun/kernel/KernelNormalizer.h>
namespace shogun
{
/** @brief Identity Kernel Normalization, i.e. no normalization is applied. */
class CIdentityKernelNormalizer : public CKernelNormalizer
{
public:
/** default constructor */
CIdentityKernelNormalizer() : CKernelNormalizer()
{
}
/** default destructor */
virtual ~CIdentityKernelNormalizer()
{
}
/** initialization of the normalizer (if needed)
* @param k kernel */
virtual bool init(CKernel* k)
{
return true;
}
/** normalize the kernel value
* @param value kernel value
* @param idx_lhs index of left hand side vector
* @param idx_rhs index of right hand side vector
*/
inline virtual float64_t normalize(
float64_t value, int32_t idx_lhs, int32_t idx_rhs)
{
return value;
}
/** normalize only the left hand side vector
* @param value value of a component of the left hand side feature vector
* @param idx_lhs index of left hand side vector
*/
inline virtual float64_t normalize_lhs(float64_t value, int32_t idx_lhs)
{
return value;
}
/** normalize only the right hand side vector
* @param value value of a component of the right hand side feature vector
* @param idx_rhs index of right hand side vector
*/
inline virtual float64_t normalize_rhs(float64_t value, int32_t idx_rhs)
{
return value;
}
/** @return object name */
inline virtual const char* get_name() const { return "IdentityKernelNormalizer"; }
};
}
#endif
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