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From "O. Olson" <olson_...@yahoo.it>
Subject Is there a problem with -Infinity as boost?
Date Mon, 20 Oct 2014 22:04:18 GMT
I am considering using a boost as follows: 

&boost=log(qty)

Where qty is the quantity in stock of a given product i.e. qty could be 0,
1, 2, 3, … etc. The problem I see is that log(0) is -Infinity. Would this be
a problem for Solr? For me it is not a problem because 
log(0) < log(1) < log(2) etc. 

I'd be grateful for any thoughts. One alternative is to use max e.g.
&boost=max(log(qty), -1) 

But still this would cause Solr to compute the -Infinity and then discard
it.  So can I use an expression for boost that would result in –Infinity? 

Thank you
O. O.




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