Nada,
Scores and norms are two different things. If you look for the Lucene class
called DefaultSimilarity you will see how norms are computed:
public float computeNorm(String field, FieldInvertState state) {
final int numTerms;
if (discountOverlaps)
numTerms = state.getLength() - state.getNumOverlap();
else
numTerms = state.getLength();
return (float) (state.getBoost() * lengthNorm(field, numTerms));
}
So that's how two different fields can still have the same norms value.
Otis
--
Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch
----- Original Message ----
> From: Nada Mimouni <mimo...@tk.informatik.tu-darmstadt.de>
> To: java-user@lucene.apache.org
> Sent: Thursday, June 18, 2009 12:16:49 PM
> Subject: Same score for different fields
>
> Hi,
>
>
>
> I have created a Lucene index with two fields.
>
> Let's take this example entry from my index as displayed by Luke:
>
>
>
> Field | Norm | Value
>
> --------------------------------------------
>
> | 0.375 | average
>
> | 0.375 | salary
>
> | 0.375 | professional
>
> | 0.375 | baseball
>
> | 0.375 | player
>
> | 0.375 | of
>
> | 0.625 | average salary
>
> | 0.625 | baseball player
>
>
>
> When I run the search, documents that contain hits of the field with
> the highest norm (or score : is it the same?), in this case the field
> "seq", are ranked in the top.
>
> How can I give similar scores for both fields?
>
>
>
> Thank you.
>
> Nada
---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org
For additional commands, e-mail: java-user-h...@lucene.apache.org
