Hi!
On Wed, Feb 27, 2008 at 03:04:27PM -0300, Bira wrote:
[..]
> By the way, did the message containing the example arrive?
yes it did. I tried it out and got the same result as you - score of
0.0.
Removing the :index => :omit_norms option from the FieldInfos
declaration leads to the expected result, a non-zero score. It's not
clear from the API docs if this is the expected behaviour:
:omit_norms | Same as :yes except omit the
| norms file. The norms file can
| be omitted if you don't boost
| any fields and you don't need
| scoring based on field length.
Here's Ferret's explanation of the score computation:
0.0 = field_weight(message:earnings in 0), product of:
3.162278 = tf(term_freq(message:earnings)=10)
0.3068528 = idf(doc_freq=1)
0.0 = field_norm(field=message, doc=0)
Looks like Ferret should rather not consider the zero field_norm when computing
the score in this case.
Cheers,
Jens
--
Jens Krämer
Finkenlust 14, 06449 Aschersleben, Germany
VAT Id DE251962952
http://www.jkraemer.net/ - Blog
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