Did you put a boost of 0.0 on the documents, as opposed to the default of
1.0?
x * 0.0 = 0.0
-- Jack Krupansky
-----Original Message-----
From: Joe Zhang
Sent: Friday, July 12, 2013 10:31 PM
To: solr-user@lucene.apache.org
Subject: zero-valued retrieval scores
when I search a keyword (such as "apple"), most of the docs carry 0.0 as
score. Here is an example from explain:
str name="
http://www.bloomberg.com/slideshow/2013-07-12/world-at-work-india.html";>
0.0 = (MATCH) fieldWeight(content:appl in 51), product of:
1.0 = tf(termFreq(content:appl)=1)
2.096877 = idf(docFreq=5190, maxDocs=15546)
0.0 = fieldNorm(field=content, doc=51)
Can somebody help me understand why fieldNorm is 0? What exactly is the
formula for computing fieldNorm?
Thanks!
