[jira] [Resolved] (OPENNLP-177) Add cross validation support to doccat

["William Colen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OPENNLP-177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

William Colen resolved OPENNLP-177.
-----------------------------------

    Resolution: Fixed

Created the CL tool - 

$ bin/opennlp DoccatCrossValidator
Usage: opennlp DoccatCrossValidator[.leipzig] [-reportOutputFile outputFile] [-misclassified true|false] [-folds num] [-params paramsFile] -lang language -data sampleData [-encoding charsetName]

Arguments description:
	-reportOutputFile outputFile
		the path of the fine-grained report file.
	-misclassified true|false
		if true will print false negatives and false positives.
	-folds num
		number of folds, default is 10.
	-params paramsFile
		training parameters file.
	-lang language
		language which is being processed.
	-data sampleData
		data to be used, usually a file name.
	-encoding charsetName
		encoding for reading and writing text, if absent the system default is used.

The reportOutputFile will output detailed F-Measure for each category and the confusion matrix.

> Add cross validation support to doccat
> --------------------------------------
>
>                 Key: OPENNLP-177
>                 URL: https://issues.apache.org/jira/browse/OPENNLP-177
>             Project: OpenNLP
>          Issue Type: Improvement
>          Components: Doccat
>            Reporter: Joern Kottmann
>            Assignee: William Colen
>
> Doccat should support cross validation in order to measure the performance on a data set without test data.



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