/usr/include/shogun/converter/LocallyLinearEmbedding.h is in libshogun-dev 3.2.0-7.5.
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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) 2011-2013 Sergey Lisitsyn
* Copyright (C) 2011-2013 Berlin Institute of Technology and Max-Planck-Society
*/
#ifndef LOCALLYLINEAREMBEDDING_H_
#define LOCALLYLINEAREMBEDDING_H_
#include <shogun/lib/config.h>
#ifdef HAVE_EIGEN3
#include <shogun/converter/EmbeddingConverter.h>
#include <shogun/features/Features.h>
#include <shogun/features/DenseFeatures.h>
#include <shogun/distance/Distance.h>
namespace shogun
{
class CFeatures;
class CDistance;
/** @brief class LocallyLinearEmbedding used to embed
* data using Locally Linear Embedding algorithm described in
*
* Saul, L. K., Ave, P., Park, F., & Roweis, S. T. (2001).
* An Introduction to Locally Linear Embedding. Available from, 290(5500), 2323-2326.
* Retrieved from:
* http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.123.7319&rep=rep1&type=pdf
*
* It is optimized with alignment formulation as described in
*
* Zhao, D. (2006).
* Formulating LLE using alignment technique.
* Pattern Recognition, 39(11), 2233-2235.
* Retrieved from http://linkinghub.elsevier.com/retrieve/pii/S0031320306002160
*
* Uses implementation from the Tapkee library.
*
* To use this converter with static interfaces please refer it by
* sg('create_converter','lle',k);
*
*/
class CLocallyLinearEmbedding: public CEmbeddingConverter
{
public:
/** constructor */
CLocallyLinearEmbedding();
/** destructor */
virtual ~CLocallyLinearEmbedding();
/** apply preprocessor to features
* @param features
*/
virtual CFeatures* apply(CFeatures* features);
/** setter for k parameter
* @param k k value
*/
void set_k(int32_t k);
/** getter for k parameter
* @return m_k value
*/
int32_t get_k() const;
/** setter for reconstruction shift parameter
* @param reconstruction_shift reconstruction shift value
*/
void set_reconstruction_shift(float64_t reconstruction_shift);
/** getter for reconstruction shift parameter
* @return m_reconstruction_shift value
*/
float64_t get_reconstruction_shift() const;
/** setter for nullspace shift parameter
* @param nullspace_shift nullsapce shift value
*/
void set_nullspace_shift(float64_t nullspace_shift);
/** getter for nullspace shift parameter
* @return m_nullspace_shift value
*/
float64_t get_nullspace_shift() const;
/** get name */
virtual const char* get_name() const;
/// HELPERS
protected:
/** default init */
void init();
/// FIELDS
protected:
/** number of neighbors */
int32_t m_k;
/** regularization shift of reconstruction step */
float64_t m_reconstruction_shift;
/** regularization shift of nullspace finding step */
float64_t m_nullspace_shift;
};
}
#endif /* HAVE_EIGEN3 */
#endif /* LOCALLYLINEAREMBEDDING_H_ */
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