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From Incze Lajos <in...@mail.matav.hu>
Subject Re: phrase query not working in boolean clause
Date Thu, 10 Jun 2004 02:08:44 GMT
On Wed, Jun 09, 2004 at 01:41:55PM -0400, Erik Hatcher wrote:
> On Jun 9, 2004, at 12:25 PM, Michael Duval wrote:
> >When doing an exact phrase query on the title the expected results are 
> >returned:
> >
> >   +(title:"Mass Asymmetry")
> >      after tokenizing/filtering:  +title:"mass asymmetri"
> >   returns 20 Hits
> >   example hit: "Mass asymmetry, equation of state, and nuclear 
> >multifragmentation"
> >
> >When attempting to confine the results to a particular journal the 
> >query used is:
> >   +(journal:L) +(title:"Mass Asymmetry")
> >      after t/f :  +journal:L +title:"mass asymmetri"
> >
> >   returns 315 Hits!!
> >   example hit 1:  Towards dynamical mass calculations
> >   example hit 2:  Up down-asymmetric gravitational fields of spinning 
> >masses
> >
> >It would seem that the search engine is treating
> >   +title:"mass asymmetri"  as +title:mass asymmetri
> >
> >However, this behavior is only apparent on composite queries as shown 
> >previously.
> >
> >For a sanity check I built the query using both the standard query 
> >parser and
> >the lucene search api (TermQuery, PhraseQuery, BooleanQuery).   The 
> >results
> >were the same both ways.
> >
> >Is this a well known limitation of the lucene search engine?  Is there 
> >a different
> >means of obtaining the desired results?
> 
> Could you work up a JUnit test case example indexing a couple of 
> documents like this into a RAMDirectory and a testXXX method that shows 
> the failure?
> 
> I cannot really make sense of what you have going on with the textual 
> queries and obviously some stemming going on to.  Show us the code. :)
> 
> 	Erik

This was fixed cca a 2 months ago by Mr. Goller. You have to upgrade,
if you can.

incze

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