Alessandro Benedetti created SOLR-12238:
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Summary: Synonym Query Style Boost By Payload
Key: SOLR-12238
URL: https://issues.apache.org/jira/browse/SOLR-12238
Project: Solr
Issue Type: Improvement
Security Level: Public (Default Security Level. Issues are Public)
Components: query parsers
Reporter: Alessandro Benedetti
This improvement is built on top of the Synonym Query Style feature and brings
the possibility of boosting synonym queries using the payload associated.
It introduces two new modalities for the Synonym Query Style :
PICK_BEST_BOOST_BY_PAYLOAD -> build a Disjunction query with the clauses
boosted by payload
AS_DISTINCT_TERMS_BOOST_BY_PAYLOAD -> build a Boolean query with the clauses
boosted by payload
This new synonym query styles will assume payloads are available so they must
be used in conjunction with a token filter able to produce payloads.
An synonym.txt example could be :
# Synonyms used by Payload Boost
tiger => tiger|1.0, Big_Cat|0.8, Shere_Khan|0.9
leopard => leopard, Big_Cat|0.8, Bagheera|0.9
lion => lion|1.0, panthera leo|0.99, Simba|0.8
snow_leopard => panthera uncia|0.99, snow leopard|1.0
A simple token filter to populate the payloads from such synonym.txt is :
<filter class="solr.DelimitedPayloadTokenFilterFactory" encoder="float"
delimiter="|"/>
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