org.knowceans.corpus.util
Class LocalSamplers

java.lang.Object
  org.knowceans.util.Samplers
      org.knowceans.corpus.util.LocalSamplers

public class LocalSamplers
extends org.knowceans.util.Samplers

Diverse sampling methods, including beta, gamma, multinomial, and Dirichlet distributions as well as Dirichlet processes, using Sethurahman's stick-breaking construction and Chinese restaurant process. The random generator used is a Mersenne Twister (Cokus), which is the only dependency.

FIXME: markov condition in random generator, see random string?

NOTE: this class is the extends that in org.knowceans.util.Samplers by some code still commented out.

Author:

heinrich (partly adapted from Yee Whye Teh's npbayes Matlab / C code)

Nested Class Summary

Nested classes/interfaces inherited from class org.knowceans.util.Samplers

org.knowceans.util.Samplers.CrpData

Field Summary

Fields inherited from class org.knowceans.util.Samplers

allss, haveNextNextGaussian, lastRand, lmss, logmaxss, maxnn, MAXSTIRLING, nextNextGaussian

Constructor Summary

LocalSamplers()

Method Summary

Methods inherited from class org.knowceans.util.Samplers

binarySearch, drand48, enumClass, main, meanLik, randBernoulli, randBeta, randBeta, randBinom, randConParam, randConParam, randCrp, randCrp, randDir, randDir, randDir, randDir, randDir, randDmm, randDmm, randDmm, randDmm, randGamma, randGamma, randGamma, randGmm, randGmm, randGmm, randGmm, randMult, randMult, randMultDirect, randMultDirect, randMultFreqs, randMultSimple, randNorm, randNumTable, randPerm, randStick, randString, randUniform, randUniform, stirling, testMult

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LocalSamplers

public LocalSamplers()