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src
shogun
features
BinnedDotFeatures.h
浏览该文件的文档.
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* Copyright (C) 2012 Soeren Sonnenburg
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*/
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#ifndef _BINNED_DOTFEATURES_H___
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#define _BINNED_DOTFEATURES_H___
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#include <
shogun/lib/common.h
>
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#include <
shogun/features/DotFeatures.h
>
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#include <
shogun/features/DenseFeatures.h
>
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namespace
shogun
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{
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template
<
class
T>
class
CDenseFeatures;
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class
CBinnedDotFeatures
:
public
CDotFeatures
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{
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public
:
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CBinnedDotFeatures
(int32_t size=0);
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CBinnedDotFeatures
(
const
CBinnedDotFeatures
& orig);
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CBinnedDotFeatures
(
CDenseFeatures<float64_t>
* sf,
SGMatrix<float64_t>
bins);
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virtual
~CBinnedDotFeatures
();
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virtual
int32_t
get_dim_feature_space
()
const
;
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virtual
float64_t
dot
(int32_t vec_idx1,
CDotFeatures
* df, int32_t vec_idx2);
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virtual
float64_t
dense_dot
(int32_t vec_idx1,
const
float64_t
* vec2, int32_t vec2_len);
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virtual
void
add_to_dense_vec
(
float64_t
alpha, int32_t vec_idx1,
float64_t
* vec2, int32_t vec2_len,
bool
abs_val=
false
);
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virtual
int32_t
get_nnz_features_for_vector
(int32_t num);
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virtual
void
*
get_feature_iterator
(int32_t vector_index);
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virtual
bool
get_next_feature
(int32_t& index,
float64_t
& value,
void
* iterator);
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virtual
void
free_feature_iterator
(
void
* iterator);
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bool
get_fill
();
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void
set_fill
(
bool
fill);
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bool
get_norm_one
();
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void
set_norm_one
(
bool
norm_one);
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void
set_simple_features
(
CDenseFeatures<float64_t>
* features);
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CDenseFeatures<float64_t>
*
get_simple_features
();
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void
set_bins
(
SGMatrix<float64_t>
bins);
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SGMatrix<float64_t>
get_bins
();
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virtual
const
char
*
get_name
()
const
;
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virtual
CFeatures
*
duplicate
()
const
;
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virtual
EFeatureType
get_feature_type
()
const
;
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virtual
EFeatureClass
get_feature_class
()
const
;
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virtual
int32_t
get_num_vectors
()
const
;
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private
:
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void
init();
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void
assert_shape(int32_t vec2_len);
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protected
:
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CDenseFeatures<float64_t>
*
m_features
;
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SGMatrix<float64_t>
m_bins
;
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bool
m_fill
;
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bool
m_norm_one
;
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};
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}
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#endif // _BINNED_DOTFEATURES_H___
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