You'd only need position-increment if using phrase-query...
otherwise... positions are quite much ignored and you can expand the
query with an or.
Eg, I'd do expand the query for breath to:
Term(breath)^2 or (Term(breathes) or Term(breathe) or Term(breathing))
I am not sure you can make a phrase-query with possible synonyms for
phrase-constituents, you'd need to OR the queries with each set of
possible variations (that grows quick! but do you know many people that
put large phrase queries?)
paul
Le 30 mai 05, à 18:54, Andrew Boyd a écrit :
Hi All,
Now that the QueryParser knows about position increments has anyone
used this to do stemming at query time
and not at indexing time? I suppose one would need a reverse stemmer.
Given the query breath it would need to inject breathe, breathes,
breathing etc.
One benifit is that if you ever wanted to change your stemming
algorithm you would not have to re-index.
Also your index would be closer to the actual documents.
Comments?
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