Hi Thomas, Yes, I will most likely go ahead and set up new instances for Solr 9 and rebuild the index. I'd be surprised if the original schema from 3.2.0 is 100% compatible with Solr 9.
Thanks :-) Regards, Stian tir. 20. sep. 2022 kl. 11:04 skrev Thomas Corthals <tho...@klascement.net>: > Hi Stian, > > You can't upgrade across more than one major version. You'll have to > reindex against a new Solr install. > > The ref guide has more on configuring similarity: > > https://solr.apache.org/guide/solr/latest/indexing-guide/schema-elements.html#similarity > > Wikipedia has an explanation of the BM25 ranking function: > https://en.wikipedia.org/wiki/Okapi_BM25 > > Kind regards, > > Thomas > > Op ma 19 sep. 2022 om 08:59 schreef Stian Brattland <st...@octetnest.no>: > > > Hi Thomas, > > > > Yes, it may be about time to upgrade from 3.2.0. I think I will have to > > look into that. Thanks for sharing your insight and configuration > example. > > > > Kind regards, > > Stian > > > > > > > > søn. 18. sep. 2022 kl. 16:21 skrev Thomas Corthals < > tho...@klascement.net > > >: > > > > > Hi Stian, > > > > > > We have the same issue with our documents. I fixed that by setting b = > 0 > > in > > > our schema for BM25 similarity. > > > > > > <similarity class="solr.BM25SimilarityFactory"> > > > <float name="b">0</float> > > > </similarity> > > > > > > I don't know if BM25 can be used with your version of Solr. Personally > I > > > think it's worth upgrading for. > > > > > > Thomas > > > > > > > > > Op za 17 sep. 2022 om 19:30 schreef Stian Brattland < > st...@octetnest.no > > >: > > > > > > > Hi, > > > > > > > > I have a Solr (3.2.0) instance with omitNorms=true on all fields. > This > > > has > > > > been done in an attempt to not penalize documents which have many > > terms. > > > > > > > > What puzzles me is that, despite omitNorms=true, the fieldNorm is > still > > > > calculated and affects the score. > > > > > > > > --- > > > > 3.7455106 = (MATCH) fieldWeight(track_hierarchynode:pop in > 258465), > > > > product of: > > > > 2.236068 = tf(termFreq(track_hierarchynode:pop)=5) > > > > 6.700173 = idf(docFreq=6960, maxDocs=2080776) > > > > 0.25 = fieldNorm(field=track_hierarchynode, doc=258465) > > > > --- > > > > > > > > How is the fieldNorm value calculated when omitNorms=true? > > > > > > > > Kind regards, > > > > Stian Brattland > > > > > > > > > >
