LightGBM::Random Class Reference

A wrapper for random generator. More...

#include <random.h>

Public Member Functions
	Random ()
	Constructor, with random seed.
	Random (int seed)
	Constructor, with specific seed.
int	NextShort (int lower_bound, int upper_bound)
	Generate random integer, int16 range. [0, 65536].
int	NextInt (int lower_bound, int upper_bound)
	Generate random integer, int32 range.
float	NextFloat ()
	Generate random float data.
std::vector< int >	Sample (int N, int K)
	Sample K data from {0,1,...,N-1}.

Detailed Description

A wrapper for random generator.

Member Function Documentation

NextFloat()

float LightGBM::Random::NextFloat ( )

inline

Generate random float data.

Returns

The random float between [0.0, 1.0)

NextInt()

int LightGBM::Random::NextInt ( int  lower_bound, int  upper_bound  )

inline

Generate random integer, int32 range.

Parameters

lower_bound	lower bound
upper_bound	upper bound

Returns

The random integer between [lower_bound, upper_bound)

NextShort()

int LightGBM::Random::NextShort ( int  lower_bound, int  upper_bound  )

inline

Generate random integer, int16 range. [0, 65536].

Parameters

lower_bound	lower bound
upper_bound	upper bound

Returns

The random integer between [lower_bound, upper_bound)

Sample()

std::vector< int > LightGBM::Random::Sample ( int  N, int  K  )

inline

Sample K data from {0,1,...,N-1}.

Parameters

N
K

Returns

K Ordered sampled data from {0,1,...,N-1}

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

• External/LightGBM_2.2.3/LightGBM-2.2.3/include/LightGBM/utils/random.h