Hello Christoph,
Sorry but I won't be able to provide hints on this one. Hope you'll find
a solution
Stephane
On 06/26/2014 05:43 PM, Christoph Lingg wrote:
other unexpected results arise due to different queryNorms:
for the first result i get a query norm:
|
{
"value": 0.0059806756,
"description": "queryNorm"
}
|
for some other documents it's:
|
{
"value": 0.0031318406,
"description": "queryNorm"
}
|
the querynorm is multiplied to create the score, so it pushes some
documents by a factor of two leading to unexpected results i do not
understand. i digged into queryNorm and as far as i could understand
it should stay constant for all docs! the documentation
<http://lucene.apache.org/core/3_0_3/api/all/org/apache/lucene/search/Similarity.html>
states:
|
queryNorm(q) is a normalizing factor used to make scores between
queries comparable. This factor does not affect document ranking
(since all ranked documents are multiplied by the same factor), but
rather just attempts to make scores from different queries (or even
different indexes) comparable.
|
is it ok that queryNorm differs?
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