David Tonhofer created MATH-1022:
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Summary: 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: 3.3
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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