[jira] [Comment Edited] (OPENNLP-798) Division by Zero exception in the EvalParameters.

["Bruno P. Kinoshita (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OPENNLP-798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14924188#comment-14924188 ] 

Bruno P. Kinoshita edited comment on OPENNLP-798 at 9/28/15 9:23 AM:
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When I had a look at the _EvalParameters(Context[] params, int numOutcomes)_ constructor, that calls the other constructor _EvalParameters(Context[] params, double correctionParam, double correctionConstant, int numOutcomes)_, passing correctionConstant = *0.0*. In the constructor code, you have:

{noformat}
this.constantInverse = 1.0 / correctionConstant
{noformat}

At first look I also thought it could rise a division by zero exception. However, upon a closer inspection, I realised it was a division with doubles, which results in Infinity, and not in an exception.

Joern, I think this issue can be closed as cannot reproduce, unless Gustavo has an exception trace or some sample code to reproduce it.


was (Author: kinow):
When I had a look at the _EvalParameters(Context[] params, int numOutcomes)_ constructor, and the subsequent code called in _EvalParameters(Context[] params, double correctionParam, double correctionConstant, int numOutcomes)_, where you have:

{noformat}
this.constantInverse = 1.0 / correctionConstant
{noformat}

I thought it could rise a division by zero exception. However, upon a closer look, I realised it was a double division, which will result in Infinity.

Joern, I think this issue can be closed as cannot reproduce, unless Gustavo has an exception trace or some sample code to reproduce it.

> Division by Zero exception in the EvalParameters.
> -------------------------------------------------
>
>                 Key: OPENNLP-798
>                 URL: https://issues.apache.org/jira/browse/OPENNLP-798
>             Project: OpenNLP
>          Issue Type: Bug
>          Components: Machine Learning
>            Reporter: Gustavo Knuppe
>
> The EvalParameters(Context[] params, int numOutcomes) constructor rises a division by zero exception.



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