On Dec 4, 2008, at 8:19 PM, Jonathan Ariel wrote:
Hi! I'm wondering what solr is really doing with the exact word vs.
the
stemmed word.
So for example I have 2 documents.
The first one has in the title the word "convertible"
The second one has "convert"
When solr stem the titles, both will be the same since convertible ->
convert.
Then when I search "convertible" both documents seems to have the same
relevancy... is that right or Solr keeps track of the original word
and
gives extra score to the fact that I am actually looking for the
same exact
word that I have in a document... I might be wrong, but it seems to
me that
it should score that better.
Solr doesn't keep track of the original word, unless you tell it to.
So, if you are stemming, then you are losing the original word. A
common way to solve what you are doing is to actually have two fields,
where one is stemmed and one is exact (you can do this with the
<copyField/> mechanism in the Schema). Thus, if you want exact
match, you search the exact match field, otherwise you search the
stemmed field.
-Grant
