Hi Furkan,
in order to change the BM25 parameter values k1 and b, the following XML
snippet needs to be added in your schema.xml configuration file:
<similarity class="solr.BM25SimilarityFactory">
<float name="k1">1.3</float>
<float name="b">0.7</float>
</similarity>
It is even possible to specify the SimilarityFactory on individual index
fields. See [1] for more details.
Best
Sascha
[1] https://wiki.apache.org/solr/SchemaXml#Similarity
Am 15.12.2016 um 14:58 schrieb Furkan KAMACI:
Hi,
Sole's default similarity is BM25 anymore. Its parameters are defined as
k1=1.2, b=0.75
as default. However is there any way that to check the effect of using
different coefficients to calculate BM25 to find the optimal values?
Kind Regards,
Furkan KAMACI
