Utility for fast column-wise access. More...

#include <dmlc/endian.h>
#include <algorithm>
#include <limits>
#include <memory>
#include <vector>
#include "../data/gradient_index.h"

Include dependency graph for column_matrix.h:

This graph shows which files directly or indirectly include this file:

Classes
class	xgboost::common::Column< BinIdxType >
	a column storage, to be used with ApplySplit. Note that each bin id is stored as index[i] + index_base. Different types of column index for each column allow to reduce the memory usage. More...

class	xgboost::common::SparseColumn< BinIdxType >

class	xgboost::common::DenseColumn< BinIdxType, any_missing >

class	xgboost::common::ColumnMatrix
	a collection of columns, with support for construction from GHistIndexMatrix. More...

Enumerations
enum	xgboost::common::ColumnType : uint8_t { xgboost::common::kDenseColumn, xgboost::common::kSparseColumn }
	column type More...

Detailed Description

Utility for fast column-wise access.

Classes