HI Sue,
I think you’re correct here... ‘ant’ and ‘er’ are both common English stems,
and Lucene is probably just being clever by chopping them off when indexing and
searching.
http://lucene.apache.org/java/2_2_0/api/org/apache/lucene/analysis/package-summary.html
gives some info on Lucene’s analysis and filtering in general, but you’d
probably need to take a look under the hood to see exactly which word suffixes
it’s ignoring and in which situations.
Cheers,
Kim
From: Thornton, Susan M. (LARC-B702)[RAYTHEON TECHNICAL SERVICES COMPANY]
[mailto:susan.m.thorn...@nasa.gov]
Sent: Thursday, 6 August 2009 9:31 a.m.
To: DSpace-tech@lists.sourceforge.net
Cc: Smail, James W. (LARC-B702)[RAYTHEON TECHNICAL SERVICES COMPANY]
Subject: [Dspace-tech] Strange Search results
A User emailed me and told me he was getting some incorrect search results in
DSpace 1.5.1. Here is the advanced search he did:
Title = propeller
Along with documents where the title contained the word “propeller”, he also
got lots of documents where the title contained the word “propellant”. I tried
it and got the same results. I also tried looking for “propeller NOT
propellant” and then got *no* results.
I thought maybe Lucene was cutting off the “er” and/or “ant”, but couldn’t find
this anywhere in the documentation. Does anyone know what might be going on?
Thanks,
Sue
Sue Walker-Thornton
ConITS Contract
NASA Langley Research Center
Integrated Library Systems Application & Database Administrator
130 Research Drive
Hampton, VA 23666
Office: (757) 224-4074
Fax: (757) 224-4001
Pager: (757) 988-2547
Email: susan.m.thorn...@nasa.gov <mailto:susan.m.thorn...@nasa.gov>
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