Hi, Pratic I believe that your observations are correct.
Score for each individual query (in your example it's wildcards query like 'concept_name:(*semantic*)^200') is calculated by a complex formulas (one of possible implementations with a good explanation is described here https://lucene.apache.org/core/7_4_0/core/org/apache/lucene/search/similarities/TFIDFSimilarity.html), but it could be simplified as follows: score(doc, query) = query_boost * <some other values depending on document and query> Score for full disjunction (by default) would be calculated as a sum of every individual query matched. So score of case1 would be: score_for_case1(doc, query) = 200 * <some other values for query 1> + 400 * <some other values for query 2> + 20 * <some other values for query 3> + 40 * <some other values for query 4> = 10 * (20 * <some other values for query 1> + 40 * <some other values for query 2> + 2 * <some other values for query 3> + 4 * <some other values for query 4>) = 10 * score_for_case2(doc, query) Thank you, Andrey Kudryavtsev 23.08.2018, 18:53, "Pratik Patel" <pra...@semandex.net>: > Hello All, > > I am trying to understand how exactly query time boosting works in solr. > Primarily, I want to understand if absolute boost values matter or is it > just the relative difference between various boost values which decides > scoring. Let's take following two queries for example. > > // case1: q parameter > >> concept_name:(*semantic*)^200 OR >> concept_name:(*machine*)^400 OR >> Abstract_note:(*semantic*)^20 OR >> Abstract_note:(*machine*)^40 > > //case2: q parameter > >> concept_name:(*semantic*)^20 OR >> concept_name:(*machine*)^40 OR >> Abstract_note:(*semantic*)^2 OR >> Abstract_note:(*machine*)^4 > > Are these two queries any different? > > Relative boosting is same in both of them. > I can see that they produce same results and ordering. Only difference is > that the score in case1 is 10 times the score in case2. > > Thanks, > Pratik
