/usr/include/shogun/converter/KernelLocalTangentSpaceAlignment.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) 2011 Sergey Lisitsyn
* Copyright (C) 2011 Berlin Institute of Technology and Max-Planck-Society
*/
#ifndef KERNELLOCALTANGENTSPACEALIGNMENT_H_
#define KERNELLOCALTANGENTSPACEALIGNMENT_H_
#include <shogun/lib/config.h>
#ifdef HAVE_LAPACK
#include <shogun/converter/KernelLocallyLinearEmbedding.h>
#include <shogun/features/Features.h>
#include <shogun/kernel/Kernel.h>
namespace shogun
{
class CFeatures;
class CKernel;
/** @brief the class LocalTangentSpaceAlignment used to preprocess
* data using kernel extension of the Local Tangent Space Alignment (LTSA) algorithm.
*
* The stated eigenproblem is solved in the same way as
* CLocallyLinearEmbedding (LAPACK or ARPACK if available).
*
* The local tangent space alignment step is parallel. Neighborhood
* determination is parallel as in CLocallyLinearEmbedding.
*
* Please do not use multithreading whether your LAPACK is not thread-safe.
*
*/
class CKernelLocalTangentSpaceAlignment: public CKernelLocallyLinearEmbedding
{
public:
/** constructor */
CKernelLocalTangentSpaceAlignment();
/** constructor with kernel parameter
* @param kernel kernel to be used
*/
CKernelLocalTangentSpaceAlignment(CKernel* kernel);
/** destructor */
virtual ~CKernelLocalTangentSpaceAlignment();
/** get name */
virtual const char* get_name() const;
/// HELPERS
protected:
/** construct weight matrix
*/
virtual SGMatrix<float64_t> construct_weight_matrix(SGMatrix<float64_t> kernel_matrix,
SGMatrix<int32_t> neighborhood_matrix);
/// THREADS
protected:
/** run kernel ltsa thread
* @param p thread params
*/
static void* run_kltsa_thread(void* p);
};
}
#endif /* HAVE_LAPACK */
#endif /* KERNELLOCALTANGENTSPACEALINGMENT_H_ */
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