NEWS

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entropy 1.3.1 (2021-10-02)

• updated Authors@R field.
• updated URLs.
• fixed errors flagged by R-devel in documentation.
• updated URLs in documentation.

entropy 1.3.0 (2021-04-25)

• updated documentation for chi2.plugin() and and chi2.empirical() to compute chi-squared divergence.
• new functions Gstat() and chi2stat() to compute the statistic and the Pearson chi-squared statistic with (asymptotic) p-values.
• new functions Gstatindep() and chi2statindep() to compute the G statistic and Pearson chi-squared statistic to test independence.

entropy 1.2.1 (2014-11-14)

• change of maintainer email address.

entropy 1.2.0 (2013-07-16)

• new functions KL.plugin(), KL.empirical(), Kl.Dirichlet(), and KL.shrink() for computing the Kullback-Leibler divergence.
• new functions chi2.plugin(), chi2.empirical(), chi2.Dirichlet(), and chi2.shrink() for computing the chi-squared statistic.
• new functions chi2indep.plugin(), chi2indep.empirical(), chi2indep.Dirichlet(), and chi2indep.shrink() for computing the chi-squared statistic of independence.
• new discretize2d() function for simple binning of a pair of random variables.
• in all shrinkage functions the target option has been removed (and the default uniform target is now always used).

entropy 1.1.9 (2013-06-22)

• new discretize() function for simple binning of a continuous random variable.
• now requires R >= 2.15.1.

entropy 1.1.8 (2013-03-25)

• License file removed.
• Dependencies updated.
• the functions freqs.shrink(), entropy.shrink(), mi.shrink(), entropy(), and freqs() now allow to specify the shrinkage intensity.

entropy 1.1.7 (2012-01-20)

• NAMESPACE file added

entropy 1.1.6 (2011-03-21)

• small in documentation file fixed (for R 2.13.0 release)
• added in documentation that the default unit for the entropy is "nats" (natural units), for "bits" one needs to set unit="log2".

entropy 1.1.5 (2010-04-11)

• small bug in documentation file fixed (for R 2.11.0 release)

entropy 1.1.4 (2009-08-08)

• reference to publication (Hausser and Strimmer, 2009) added

entropy 1.1.3 (2009-01-09)

• small changes to update documentation

entropy 1.1.2 (2008-11-22)

• verbose messages for shrinkage entropy are now more informative and in the same style as those from corpcor
• man pages slightly updated

entropy 1.1.1 (2008-10-26)

• bug fix: freqs.shrink() now also works for sample sizes 1 and 0
• freqs.shrink(), entropy.shrink() and mi.shrink() now return the estimated shrinkage intensity as attribute (lambda.freqs).

entropy 1.1.0 (2008-09-29)

• several new functions added for estimating mutual information: mi.plugin(), mi.empirical(), mi.Dirichlet() and mi.shrink().

entropy 1.0.0 (2008-09-02)

This package implements the following entropy estimators

• the James-Stein shrinkage estimator by Hausser and Strimmer,
• the maximum likelihood estimator,
• the Miller-Madow estimator,
• various Bayesian estimators (based on Dirichlet-multinomial model),
• and the Chen-Shao estimator.

It also provides an R interface to the

• Nemenman-Shafee-Bialek (NSB) estimator.
• This is the first public release (2 September 2008).