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From "David Tonhofer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MATH-1022) Confused by the API docs for org.apache.commons.math3.analysis.function
Date Tue, 13 Aug 2013 15:59:47 GMT

    [ https://issues.apache.org/jira/browse/MATH-1022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13738403#comment-13738403
] 

David Tonhofer commented on MATH-1022:
--------------------------------------

In furtherance of which: 

References to articles are alternately to Wikipedia or Wolfram's Mathworld. Might there be
a need to standardize?
                
> Confused by the API docs for org.apache.commons.math3.analysis.function
> -----------------------------------------------------------------------
>
>                 Key: MATH-1022
>                 URL: https://issues.apache.org/jira/browse/MATH-1022
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 3.2
>            Reporter: David Tonhofer
>
> Something is wrong or unclear...
> We read:
> http://commons.apache.org/proper/commons-math/apidocs/org/apache/commons/math3/analysis/function/Logistic.Parametric.html
>    "Parametric function where the input array contains the parameters
>     of the logit function, ordered as follows: "
>  --> But the "logit" function is not the "logistic" function.
> http://commons.apache.org/proper/commons-math/apidocs/org/apache/commons/math3/analysis/function/Sigmoid.Parametric.html
>    "Parametric function where the input array contains the parameters of
>    the logit function, ordered as follows: "
>  --> But the "logit" function is not the "sigmoid" function, and what is
>      the difference between the Logistic Function snd the Sigmoid function?
> http://commons.apache.org/proper/commons-math/apidocs/org/apache/commons/math3/analysis/function/Logit.Parametric.html
>    "Parametric function where the input array contains the parameters of
>     the logit function, ordered as follows: "
>  --> That sounds correct.
> References:
> http://en.wikipedia.org/wiki/Logistic_function
> http://en.wikipedia.org/wiki/Logit
> http://en.wikipedia.org/wiki/Sigmoid_function

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