smile.math.random

Class MersenneTwister

java.lang.Object

smile.math.random.MersenneTwister

All Implemented Interfaces:

RandomNumberGenerator

public class MersenneTwister
extends java.lang.Object
implements RandomNumberGenerator

32-bit Mersenne Twister. This implements the MT19937 (Mersenne Twister) pseudo random number generator algorithm based upon the original C code by Makoto Matsumoto and Takuji Nishimura ( http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html).

As a subclass of java.util.Random this class provides a single canonical method next() for generating bits in the pseudo random number sequence. Anyone using this class should invoke the public inherited methods (nextInt(), nextFloat etc.) to obtain values as normal. This class should provide a drop-in replacement for the standard implementation of java.util.Random with the additional advantage of having a far longer period and the ability to use a far larger seed value.

References

Makato Matsumoto and Takuji Nishimura, "Mersenne Twister: A 623-Dimensionally Equidistributed Uniform Pseudo-Random Number Generator", ACM Transactions on Modeling and Computer Simulation, Vol. 8, No. 1, January 1998, pp 3--30.