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!
