vw_slim::example_predict_builder Class Reference

#include <example_predict_builder.h>

Public Member Functions
	example_predict_builder (example_predict *ex, char *namespace_name, uint32_t feature_index_num_bits=18)
	example_predict_builder (example_predict *ex, namespace_index namespace_idx, uint32_t feature_index_num_bits=18)
void	push_feature_string (char *feature_idx, feature_value value)
void	push_feature (feature_index feature_idx, feature_value value)

Private Member Functions
void	add_namespace (namespace_index feature_group)

Private Attributes
example_predict *	_ex
namespace_index	_namespace_idx
uint64_t	_namespace_hash
uint64_t	_feature_index_bit_mask

Detailed Description

Definition at line 7 of file example_predict_builder.h.

Constructor & Destructor Documentation

example_predict_builder() [1/2]

vw_slim::example_predict_builder::example_predict_builder	(	example_predict *	ex,
		char *	namespace_name,
		uint32_t	feature_index_num_bits = 18
	)

Definition at line 7 of file example_predict_builder.cc.

References _feature_index_bit_mask, _namespace_hash, add_namespace(), and hashstring().

    : _ex(ex)
{
  _feature_index_bit_mask = ((uint64_t)1 << feature_index_num_bits) - 1;
  add_namespace(namespace_name[0]);
  _namespace_hash = hashstring({namespace_name, namespace_name + (strlen(namespace_name))}, 0);
}

example_predict_builder() [2/2]

vw_slim::example_predict_builder::example_predict_builder	(	example_predict *	ex,
		namespace_index	namespace_idx,
		uint32_t	feature_index_num_bits = 18
	)

Definition at line 16 of file example_predict_builder.cc.

References _feature_index_bit_mask, and add_namespace().

    : _ex(ex), _namespace_hash(namespace_idx)
{
  _feature_index_bit_mask = ((uint64_t)1 << feature_index_num_bits) - 1;
  add_namespace(namespace_idx);
}

Member Function Documentation

add_namespace()

void vw_slim::example_predict_builder::add_namespace ( namespace_index  feature_group )

private

Definition at line 24 of file example_predict_builder.cc.

References _ex, _namespace_idx, example_predict::indices, and v_array< T >::unique_add_sorted().

Referenced by example_predict_builder().

{
  _namespace_idx = feature_group;
  _ex->indices.unique_add_sorted(feature_group);
}

push_feature()

void vw_slim::example_predict_builder::push_feature	(	feature_index	feature_idx,
		feature_value	value
	)

Definition at line 37 of file example_predict_builder.cc.

References _ex, _namespace_hash, _namespace_idx, and example_predict::feature_space.

Referenced by cb_data_epsilon_0_skype_jb_test_runner(), generate_cb_data_5(), run_predict_in_memory(), and TEST().

{
  _ex->feature_space[_namespace_idx].push_back(value, _namespace_hash + feature_idx);
}

push_feature_string()

void vw_slim::example_predict_builder::push_feature_string	(	char *	feature_idx,
		feature_value	value
	)

Definition at line 30 of file example_predict_builder.cc.

References _ex, _feature_index_bit_mask, _namespace_hash, _namespace_idx, example_predict::feature_space, and hashstring().

Referenced by run_predict_in_memory(), and TEST().

{
  feature_index feature_hash =
      _feature_index_bit_mask & hashstring({feature_name, feature_name + (strlen(feature_name))}, _namespace_hash);
  _ex->feature_space[_namespace_idx].push_back(value, feature_hash);
}

Member Data Documentation

_ex

example_predict* vw_slim::example_predict_builder::_ex

private

Definition at line 9 of file example_predict_builder.h.

Referenced by add_namespace(), push_feature(), and push_feature_string().

_feature_index_bit_mask

uint64_t vw_slim::example_predict_builder::_feature_index_bit_mask

private

Definition at line 12 of file example_predict_builder.h.

Referenced by example_predict_builder(), and push_feature_string().

_namespace_hash

uint64_t vw_slim::example_predict_builder::_namespace_hash

private

Definition at line 11 of file example_predict_builder.h.

Referenced by example_predict_builder(), push_feature(), and push_feature_string().

_namespace_idx

namespace_index vw_slim::example_predict_builder::_namespace_idx

private

Definition at line 10 of file example_predict_builder.h.

Referenced by add_namespace(), push_feature(), and push_feature_string().

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The documentation for this class was generated from the following files:

• /mnt/c/w/linux/vowpal_wabbit/vowpalwabbit/slim/include/example_predict_builder.h
• /mnt/c/w/linux/vowpal_wabbit/vowpalwabbit/slim/src/example_predict_builder.cc