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author | Chris Dyer <cdyer@cab.ark.cs.cmu.edu> | 2012-10-02 00:19:43 -0400 |
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committer | Chris Dyer <cdyer@cab.ark.cs.cmu.edu> | 2012-10-02 00:19:43 -0400 |
commit | 925087356b853e2099c1b60d8b757d7aa02121a9 (patch) | |
tree | 579925c5c9d3da51f43018a5c6d1c4dfbb72b089 /gi/posterior-regularisation/prjava/src/util/DigammaFunction.java | |
parent | ea79e535d69f6854d01c62e3752971fb6730d8e7 (diff) |
cdec cleanup, remove bayesian stuff, parsing stuff
Diffstat (limited to 'gi/posterior-regularisation/prjava/src/util/DigammaFunction.java')
-rw-r--r-- | gi/posterior-regularisation/prjava/src/util/DigammaFunction.java | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/gi/posterior-regularisation/prjava/src/util/DigammaFunction.java b/gi/posterior-regularisation/prjava/src/util/DigammaFunction.java deleted file mode 100644 index ff1478ad..00000000 --- a/gi/posterior-regularisation/prjava/src/util/DigammaFunction.java +++ /dev/null @@ -1,21 +0,0 @@ -package util; - -public class DigammaFunction { - public static double expDigamma(double number){ - if(number==0)return number; - return Math.exp(digamma(number)); - } - - public static double digamma(double number){ - if(number > 7){ - return digammApprox(number-0.5); - }else{ - return digamma(number+1) - 1.0/number; - } - } - - private static double digammApprox(double value){ - return Math.log(value) + 0.04167*Math.pow(value, -2) - 0.00729*Math.pow(value, -4) - + 0.00384*Math.pow(value, -6) - 0.00413*Math.pow(value, -8); - } -} |