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https://jira.duraspace.org/browse/DS-849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=21368#action_21368
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Tim Donohue commented on DS-849:
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Also, forgot to mention, I added basic docs for this DSNonStemmingAnalyzer to:
https://wiki.duraspace.org/display/DSDOCDEV/Configuration
> create a non-Porter Stemming analyzer for DSpace
> ------------------------------------------------
>
> Key: DS-849
> URL: https://jira.duraspace.org/browse/DS-849
> Project: DSpace
> Issue Type: Improvement
> Components: Documentation, DSpace API
> Affects Versions: 1.5.0, 1.5.1, 1.5.2, 1.6.0, 1.6.1, 1.6.2, 1.7.0
> Reporter: Hardy Pottinger
> Assignee: Tim Donohue
> Fix For: 1.8.0
>
> Attachments: DS-849-disable-porter-stemming-version2.patch,
> DS-849-version3.patch, DS-disable-porter-stemming.patch
>
>
> For some use cases for DSpace, the index produced by the standard search
> analyzer (org.dspace.search.DSAnalyzer) produces unsatisfactorily imprecise
> results. Creating an alternate analyzer, which omits PorterStemFilter, will
> be helpful in those use cases. See these threads for more of the backstory:
> http://comments.gmane.org/gmane.comp.db.dspace.user/13404
> http://comments.gmane.org/gmane.comp.db.dspace.user/13407
> http://comments.gmane.org/gmane.comp.db.dspace.user/13420
> http://comments.gmane.org/gmane.comp.db.dspace.user/13427
> I'm attaching a patch, but it's more of a kit. You must first copy
> [dspace-src]/dspace-api/src/main/java/org/dspace/search/DSAnalyzer.java to
> [dspace-src]/dspace-api/src/main/java/org/dspace/search/DSNonStemmingAnalyzer.java,
> then you can apply the patch.
> After patching, you must alter your dspace.cfg file, uncommenting and
> changing the search.analyzer line so that it reads:
> search.analyzer = org.dspace.search.DSNonStemmingAnalyzer
> Then, do the following:
> * stop Tomcat (taking down your DSpace instance)
> * re-index all content in your DSpace by running:
> [dspace]/bin/dspace index-init
> * start Tomcat
> * test
> All credit for this work goes to Tim Donohue and Stuart Yeates, I just put
> the pieces together into this patch and ticket.
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