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Posted to issues@opennlp.apache.org by "Koji Sekiguchi (JIRA)" <ji...@apache.org> on 2017/12/27 03:56:00 UTC
[jira] [Resolved] (OPENNLP-1154) change the XML format for feature
generator config in NameFinder and POS Tagger
[ https://issues.apache.org/jira/browse/OPENNLP-1154?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Koji Sekiguchi resolved OPENNLP-1154.
-------------------------------------
Resolution: Fixed
> change the XML format for feature generator config in NameFinder and POS Tagger
> -------------------------------------------------------------------------------
>
> Key: OPENNLP-1154
> URL: https://issues.apache.org/jira/browse/OPENNLP-1154
> Project: OpenNLP
> Issue Type: Improvement
> Components: Name Finder
> Affects Versions: 1.8.3
> Reporter: Koji Sekiguchi
> Assignee: Koji Sekiguchi
>
> NameFinder provides many kinds of feature generator (factories). Users can define their config via XML which looks like:
> {code:xml}
> <generators>
> <cache>
> <generators>
> <window prevLength = "2" nextLength = "2">
> <tokenclass/>
> </window>
> <window prevLength = "2" nextLength = "2">
> <token/>
> </window>
> <definition/>
> <prevmap/>
> <bigram/>
> <sentence begin="true" end="false"/>
> </generators>
> </cache>
> </generators>
> {code}
> If a user wants to implement their own feature generator, he can use <custom .../>, but if he wants to have two or more feature generators at once, he may be able to implement it by providing a wrapper feature generator which wraps two or more feature generators that he originally wants to have, but it is not good.
> I'd like to suggest that we make the config format more flexible like below:
> {code:xml}
> <generator class="opennlp.tools.util.featuregen.AggregatedFeatureGeneratorFactory">
> <args>
> <generator class="opennlp.tools.util.featuregen.CachedFeatureGeneratorFactory">
> <args>
> <generator class="opennlp.tools.util.featuregen.AggregatedFeatureGeneratorFactory">
> <args>
> <generator class="opennlp.tools.util.featuregen.WindowFeatureGeneratorFactory">
> <args>
> <int name="prevLength">2</int>
> <int name="nextLength">2</int>
> <generator class="opennlp.tools.util.featuregen.TokenClassFeatureGeneratorFactory"/>
> </args>
> </generator>
> <generator class="opennlp.tools.util.featuregen.WindowFeatureGeneratorFactory">
> <args>
> <int name="prevLength">2</int>
> <int name="nextLength">2</int>
> <generator class="opennlp.tools.util.featuregen.TokenFeatureGeneratorFactory"/>
> </args>
> </generator>
> </args>
> </generator>
> </args>
> </generator>
> </args>
> </generator>
> {code}
> If <args>...</args> is too noisy, I'm thinking another format as well:
> {code:xml}
> <generator class="opennlp.tools.util.featuregen.AggregatedFeatureGeneratorFactory">
> <generator class="opennlp.tools.util.featuregen.CachedFeatureGeneratorFactory">
> <generator class="opennlp.tools.util.featuregen.AggregatedFeatureGeneratorFactory">
> <generator class="opennlp.tools.util.featuregen.WindowFeatureGeneratorFactory">
> <int name="prevLength">2</int>
> <int name="nextLength">2</int>
> <generator class="opennlp.tools.util.featuregen.TokenClassFeatureGeneratorFactory"/>
> </generator>
> <generator class="opennlp.tools.util.featuregen.WindowFeatureGeneratorFactory">
> <int name="prevLength">2</int>
> <int name="nextLength">2</int>
> <generator class="opennlp.tools.util.featuregen.TokenFeatureGeneratorFactory"/>
> </generator>
> </generator>
> </generator>
> </generator>
> {code}
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