"bf" is processed first, then "boost".
All the bf's will be added, then the resulting scores will be boosted by the
product of all the "boost" function queries.
-- Jack Krupansky
-----Original Message-----
From: Floyd Wu
Sent: Monday, December 03, 2012 11:00 PM
To: solr-user@lucene.apache.org
Subject: Difference between 'bf' and 'boost' when using eDismax
Hi there,
I'm not sure if I understand this clearly.
'bf' is that final score will be add some value return by bf?
for example-> score + bf = final score
'boost' is that score will be multiply with value that return by boost?
for example-> score * boost = final score
When using both( 'bf' and 'boost')
score * boost + bf = final score
If I would like to make recent created document ranking higher, using 'bf'
or 'boost' will be better solution(Assume bf and boost will use the same
function recip(ms(NOW,datefield),3.16e-11,1,1))?
Please help on this.
