:>the only way to "negative boost" is to "positively boost" the inverse... :> :> (*:* -field1:value_to_penalize)^10
This will do the job aswell as bq supports pure negative queries (at least in trunk): bq=-field1:value_to_penalize^10 http://wiki.apache.org/solr/SolrRelevancyFAQ#head-76e53db8c5fd31133dc3566318d1aad2bb23e07e hossman wrote: > > > : Use decimal figure less than 1, e.g. 0.5, to express less importance. > > but that's stil la positive boost ... it still increases the scores of > documents that match. > > the only way to "negative boost" is to "positively boost" the inverse... > > (*:* -field1:value_to_penalize)^10 > > : > I am looking for a way to assign negative boost to a term in Solr > query. > : > Our use scenario is that we want to boost matching documents that are > : > updated recently and penalize those that have not been updated for a > long > : > time. There are other terms in the query that would affect the scores > as > : > well. For example we construct a query similar to this: > : > > : > *:* field1:value1^2 field2:value2^2 lastUpdateTime:[NOW/DAY-90DAYS TO > *]^5 > : > lastUpdateTime:[* TO NOW/DAY-365DAYS]^-3 > : > > : > I notice it's not possible to simply use a negative boosting factor in > the > : > query. Is there any way to achieve such result? > : > > : > Regards, > : > Shi Quan He > : > > : > > > > > -Hoss > > > -- View this message in context: http://www.nabble.com/Is-negative-boost-possible--tp25025775p25039059.html Sent from the Solr - User mailing list archive at Nabble.com.
