You can turn off norms for the field. It doens't make any sense to talk
about "changing the length norm". The length norm is based on the size
of the field for the particular document, to implement the TF/IDF style
relevance algorithm. But you can turn off norms for the field if you
don't want TF to be taken into account.
I _think_ if you turn off norms the relevancy will be based purely on
"term count" rather than "term frequency", which is what you're wanting.
But not sure of that, I get confused too thinking about the implications
of all this stuff, but it's something to try/look into. Forget exactly
how you turn off norms, or if there are ways to turn off some kinds of
field norms but not others, but I recall there is definitely a way to do
it on a field-by-field basis (not I think on a query-by-query basis).
On 4/27/2011 8:25 AM, roySolr wrote:
Thanks!! It's clear now, sometimes the lengthNorm is the same. See the table
below:
# of terms lengthNorm
1 1.0
2 .625
3 .5
4 .5
5 .4375
6 .375
7 .375
8 .3125
9 .3125
10 .3125
Is it possible to change the lengthNorm?
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