Hi all, Can somebody explain me SOLR tip from here <https://builds.apache.org/view/L/view/Lucene/job/Solr-reference-guide-8.x/javadoc/aliases.html> : /"Any alias (standard or routed) that references multiple collections may complicate relevancy. By default, SolrCloud scores documents on a per shard basis. With multiple collections in an alias this is always a problem, so if you have a use case for which BM25 or TF/IDF relevancy is important you will want to turn on one of the ExactStatsCache implementations"/
But there is / "This implementation uses global values (across the collection) for document frequency" / in ExactStatsCache documentation (from here <https://builds.apache.org/view/L/view/Lucene/job/Solr-reference-guide-8.x/javadoc/distributed-requests.html#distributedidf> ) So what does it mean "across the collection"? Does it mean that distributed IDF is inside the same collection (across shards)? If yes, how it will help in the alias case? -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
