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https://issues.apache.org/jira/browse/OPENNLP-338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13434086#comment-13434086
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Joern Kottmann commented on OPENNLP-338:
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The trainer.params file has these two lines:
Algorithm=MAXENT_QN
Cutoff=0
You can train like this:
bin/opennlp TokenNameFinderTrainer -lang nl -data ./nl-per.train -params
trainer.params -model qn-test.bin
And the evaluation can be started with this command:
bin/opennlp TokenNameFinderEvaluator -model qn-test.bin -data nl-per.testa
-lang nl
To start the bin/opennlp script just go to the checked out opennlp-tools
folder. Prior doing that you should re-compile the maxent module.
The attached CONLL02 files can only be used for research and therefore
incompatible with the AL license.
> Add L-BFGS parameter estimation training to maxent
> --------------------------------------------------
>
> Key: OPENNLP-338
> URL: https://issues.apache.org/jira/browse/OPENNLP-338
> Project: OpenNLP
> Issue Type: New Feature
> Components: Maxent
> Reporter: Joern Kottmann
> Assignee: Hyosup Shim
> Fix For: tools-1.5.3
>
> Attachments: patch20120814-lbfgs.txt, patch-lbfgs.txt
>
>
> Add support for the L-BFGS algorithm to train a maxent classifier.
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