xgboost::RegTree::FVec Struct Reference

dense feature vector that can be taken by RegTree and can be construct from sparse feature vector. More...

#include <tree_model.h>

Public Member Functions
void	Init (size_t size)
	initialize the vector with size vector
void	Fill (const SparsePage::Inst &inst)
	fill the vector with sparse vector
void	Drop ()
	drop the trace after fill, must be called after fill.
size_t	Size () const
	returns the size of the feature vector
bst_float	GetFvalue (size_t i) const
	get ith value
bool	IsMissing (size_t i) const
	check whether i-th entry is missing
bool	HasMissing () const

Detailed Description

dense feature vector that can be taken by RegTree and can be construct from sparse feature vector.

Member Function Documentation

Drop()

void xgboost::RegTree::FVec::Drop ( )

inline

drop the trace after fill, must be called after fill.

Parameters

inst	The sparse instance to drop.

Fill()

void xgboost::RegTree::FVec::Fill ( const SparsePage::Inst &  inst )

inline

fill the vector with sparse vector

Parameters

inst	The sparse instance to fill.

GetFvalue()

bst_float xgboost::RegTree::FVec::GetFvalue ( size_t  i ) const

inline

get ith value

Parameters

i	feature index.

Returns

the i-th feature value

Init()

void xgboost::RegTree::FVec::Init ( size_t  size )

inline

initialize the vector with size vector

Parameters

size	The size of the feature vector.

IsMissing()

bool xgboost::RegTree::FVec::IsMissing ( size_t  i ) const

inline

check whether i-th entry is missing

Parameters

i	feature index.

Returns

whether i-th value is missing.

Size()

size_t xgboost::RegTree::FVec::Size ( ) const

inline

returns the size of the feature vector

Returns

the size of the feature vector

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The documentation for this struct was generated from the following file:

• External/xgboost/include/xgboost/tree_model.h