This is going to be a very short blog entry.
In SOLR you can control boosting at query time with the help of a boostfunction.
A common use case is to boost recent documents with a function that takes the age of a document into account.
Since this function shouldn't be liniear its common to use the recip function - like stated here and here for example.
I found it hard to find the correct values for the recip function - and so I wrote a little helper where you specify two points and get the correct parameters to use in the recip function:
Click here to calculate recip paramaters for solr
Read full article from Boost recent documents in SOLR
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