Add configurable Sweetspot Similarity factory
---------------------------------------------
Key: SOLR-1365
URL: https://issues.apache.org/jira/browse/SOLR-1365
Project: Solr
Issue Type: New Feature
Affects Versions: 1.3
Reporter: Kevin Osborn
Priority: Minor
Fix For: 1.4
This is some code that I wrote a while back.
Normally, if you use SweetSpotSimilarity, you are going to make it do something
useful by extending SweetSpotSimilarity. So, instead, I made a factory class
and an configurable SweetSpotSimilarty. There are two classes.
SweetSpotSimilarityFactory reads the parameters from schema.xml. It then
creates an instance of VariableSweetSpotSimilarity, which is my custom
SweetSpotSimilarity class. In addition to the standard functions, it also
handles dynamic fields.
So, in schema.xml, you could have something like this:
<similarity class="org.apache.solr.schema.SweetSpotSimilarityFactory">
<bool name="useHyperbolicTf">true</bool>
<float name="hyperbolicTfFactorsMin">1.0</float>
<float name="hyperbolicTfFactorsMax">1.5</float>
<float name="hyperbolicTfFactorsBase">1.3</float>
<float name="hyperbolicTfFactorsXOffset">2.0</float>
<int name="lengthNormFactorsMin">1</int>
<int name="lengthNormFactorsMax">1</int>
<float name="lengthNormFactorsSteepness">0.5</float>
<int name="lengthNormFactorsMin_description">2</int>
<int name="lengthNormFactorsMax_description">9</int>
<float name="lengthNormFactorsSteepness_description">0.2</float>
<int name="lengthNormFactorsMin_supplierDescription_*">2</int>
<int name="lengthNormFactorsMax_supplierDescription_*">7</int>
<float
name="lengthNormFactorsSteepness_supplierDescription_*">0.4</float>
</similarity>
So, now everything is in a config file instead of having to create your own
subclass.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
