/usr/include/shogun/io/streaming/StreamingFileFromStringFeatures.h is in libshogun-dev 3.1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 | /*
* 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 Shashwat Lal Das
* Copyright (C) 2011 Berlin Institute of Technology and Max-Planck-Society
*/
#ifndef __STREAMING_FILEFROMSTRING_H__
#define __STREAMING_FILEFROMSTRING_H__
#include <shogun/io/streaming/StreamingFileFromFeatures.h>
#include <shogun/features/StringFeatures.h>
namespace shogun
{
/** @brief Class CStreamingFileFromStringFeatures is derived from
* CStreamingFile and provides an input source for the online
* framework from a CStringFeatures object.
*/
template <class T> class CStreamingFileFromStringFeatures: public CStreamingFileFromFeatures
{
public:
/**
* Default constructor
*/
CStreamingFileFromStringFeatures();
/**
* Constructor taking a StringFeatures object as arg
*
* @param feat StringFeatures object
*/
CStreamingFileFromStringFeatures(CStringFeatures<T>* feat);
/**
* Constructor taking a StringFeatures object as arg
*
* @param feat StringFeatures object
* @param lab Labels as float64_t*
*/
CStreamingFileFromStringFeatures(CStringFeatures<T>* feat, float64_t* lab);
/**
* Destructor
*/
virtual ~CStreamingFileFromStringFeatures();
/**
* This function will be called for reading strings from the
* corresponding StringFeatures object.
* It is specialized depending on class type T.
*
* @param vec vector
* @param len length of vector
*/
virtual void get_string(T* &vec, int32_t &len);
/**
* This function will be called for reading strings and labels
* from the corresponding StringFeatures object. It is
* specialized depending on class type T.
*
* @param vec vector
* @param len length of vector
* @param label label
*/
virtual void get_string_and_label(T* &vec, int32_t &len, float64_t &label);
/**
* Reset the stream so the next example returned is the first
* example in the DenseFeatures object.
*
*/
void reset_stream()
{
vector_num = 0;
}
/** @return object name */
virtual const char* get_name() const
{
return "StreamingFileFromStringFeatures";
}
private:
/**
* Initialize members to defaults
*/
void init(CStringFeatures<T>* feat=NULL);
protected:
/// StringFeatures object
CStringFeatures<T>* features;
/// Index of vector to be returned from the feature matrix
int32_t vector_num;
};
template <class T>
CStreamingFileFromStringFeatures<T>::CStreamingFileFromStringFeatures()
: CStreamingFileFromFeatures()
{
init();
}
template <class T>
CStreamingFileFromStringFeatures<T>::CStreamingFileFromStringFeatures(CStringFeatures<T>* feat)
: CStreamingFileFromFeatures(feat)
{
init(feat);
}
template <class T>
CStreamingFileFromStringFeatures<T>::CStreamingFileFromStringFeatures(CStringFeatures<T>* feat, float64_t* lab)
: CStreamingFileFromFeatures(feat,lab)
{
init(feat);
}
template <class T>
CStreamingFileFromStringFeatures<T>::~CStreamingFileFromStringFeatures()
{
}
template <class T>
void CStreamingFileFromStringFeatures<T>::init(CStringFeatures<T>* feat)
{
vector_num=0;
features = feat;
set_generic<T>();
}
/* Functions to return the vector from the StringFeatures object */
template <class T>
void CStreamingFileFromStringFeatures<T>::get_string(T*& vector, int32_t& num_feat)
{
if (vector_num >= features->get_num_vectors())
{
vector=NULL;
num_feat=-1;
return;
}
SGVector<T> sg_vector=
features->get_feature_vector(vector_num);
vector = sg_vector.vector;
num_feat = sg_vector.vlen;
sg_vector.vector = NULL;
sg_vector.vlen = -1;
vector_num++;
}
/* Functions to return the vector from the StringFeatures object with label */
template <class T>
void CStreamingFileFromStringFeatures<T>::get_string_and_label
(T*& vector, int32_t& num_feat, float64_t& label)
{
if (vector_num >= features->get_num_vectors())
{
vector=NULL;
num_feat=-1;
return;
}
SGVector<T> sg_vector
=features->get_feature_vector(vector_num);
vector = sg_vector.vector;
num_feat = sg_vector.vlen;
label = labels[vector_num];
vector_num++;
}
}
#endif //__STREAMING_FILEFROMSTRING_H__
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