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LatentFeatures.h
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LatentFeatures.h
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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) 2012 Viktor Gal
* Copyright (C) 2012 Viktor Gal
*/
#ifndef __LATENTFEATURES_H__
#define __LATENTFEATURES_H__
#include <shogun/lib/config.h>
#include <shogun/features/Features.h>
#include <shogun/lib/Data.h>
namespace shogun
{
/** @brief Latent Features class
* The class if for representing features for latent learning, e.g. LatentSVM.
* It's basically a very generic way of storing features of any (user-defined) form
* based on CData.
*/
class CLatentFeatures : public CFeatures
{
public:
/** default constructor */
CLatentFeatures();
/** constructor
*
* @param num_samples the number of examples the object will contain
*/
CLatentFeatures(int32_t num_samples);
virtual ~CLatentFeatures();
/** Copy-constructor
*
* @return the copy of the given object
*/
virtual CFeatures* duplicate() const;
/** get feature type
*
* @return templated feature type
*/
virtual EFeatureType get_feature_type() const;
/** get feature class
*
* @return feature class
*/
virtual EFeatureClass get_feature_class() const;
/** get number of examples
*
* @return number of examples/vectors (possibly of subset, if implemented)
*/
virtual int32_t get_num_vectors() const;
/** Returns the name of the SGSerializable instance.
*
* @return name of the SGSerializable
*/
virtual const char* get_name() const { return "LatentFeatures"; }
/** add latent example
*
* @param example the user defined CData
*/
bool add_sample(CData* example);
/** get latent example
*
* @param idx index of the required example
* @return the user defined CData at the given index
*/
CData* get_sample(index_t idx);
/** helper method used to specialize a base class instance
*
* @param base_feats its dynamic type must be CLatentFeatures
*/
static CLatentFeatures* obtain_from_generic(CFeatures* base_feats);
protected:
/** array of CData */
CDynamicObjectArray* m_samples;
private:
/** init function for the object */
void init();
};
}
#endif /* __LATENTFEATURES_H__ */