random.h File Reference

Utility related to random. More...

#include <xgboost/logging.h>
#include <algorithm>
#include <functional>
#include <limits>
#include <map>
#include <memory>
#include <numeric>
#include <random>
#include <utility>
#include <vector>
#include "../collective/communicator-inl.h"
#include "algorithm.h"
#include "common.h"
#include "xgboost/context.h"
#include "xgboost/host_device_vector.h"

Go to the source code of this file.

Data Structures
class	xgboost::common::ColumnSampler
	Handles selection of columns due to colsample_bytree, colsample_bylevel and colsample_bynode parameters. More...

Namespaces
namespace	xgboost
	namespace of xgboost
namespace	xgboost::common
	Copyright 2017-2023, XGBoost Contributors.

Typedefs
using	xgboost::common::RandomEngine = std::mt19937
	Define mt19937 as default type Random Engine.
using	xgboost::common::GlobalRandomEngine = RandomEngine
	global random engine

Functions
GlobalRandomEngine &	xgboost::common::GlobalRandom ()
	global singleton of a random engine. This random engine is thread-local and only visible to current thread.
template<typename T >
std::vector< T >	xgboost::common::WeightedSamplingWithoutReplacement (Context const *ctx, std::vector< T > const &array, std::vector< float > const &weights, size_t n)

Detailed Description

Utility related to random.

Copyright 2015-2020 by Contributors

Author

Tianqi Chen