: I'm using Solr 6.6.0 i have set mm as 100% but when i have the repeated : search term then mm param is not honoured
: I have 2 docs in index : Doc1- : name=lock : Doc 2- : name=lock lock : : Now when i'm quering the solr with query : *http://localhost:8983/solr/test2/select?defType=dismax&qf=name&indent=on&mm=100%25&q=lock%20lock&wt=json : then it is returning both results but it should return only Doc 2 as no of : frequency is 2 in query while doc1 has frequency of 1 (lock term frequency). There's a couple of misconceptions here... first off: "mm" is a property of the "BooleanQuery" object that contains multiple SHOULD clauses -- it has nothign to do with the "frequency" of any clause/term -- if your BooleanQuery contains 2 SHOULD clauses, then the mm=2 will require that both clauses match. If the 2 clauses are *identical* then BooleanQuery will actally optimize away one instance, and reduce the mm=1 second: even if BooleanQuery didn't have that optimization -- which was the case until ~6.x -- then your original query would *still* match Doc#1, because each clause (aka sub-query) would be evaluated independently. the BooleanQuery would ask clause #1 "do you match doc#1?" and it would say "yes" -- then the BooleanQuery owuld ask clause #2 "do you match doc#1" and it would also say "yes" and so the BooleanQuery would say "i've reached the minimum number of SHOULD clauses i was configured to require for a match, so doc#1 is a match" If you have a special case situation of wanting to require that term occurs at least X times -- the only way i can think of off the top of my head to do that would be using the termfreq() function. something like... q={!frange l=}termfreq(text,'lock') https://lucene.apache.org/solr/guide/function-queries.html#termfreq-function https://lucene.apache.org/solr/guide/other-parsers.html#function-range-query-parser But i caution that while this might work in the specific example you gave, it's not really a drop in replacement for how you _thought_ mm should work, so a lot of things you might be trying to do with dismax+mm aren't going to have any sort of corollary here. In general i'm curious as to your broader picture goal, nad if there isn't some better solution... https://people.apache.org/~hossman/#xyproblem XY Problem Your question appears to be an "XY Problem" ... that is: you are dealing with "X", you are assuming "Y" will help you, and you are asking about "Y" without giving more details about the "X" so that we can understand the full issue. Perhaps the best solution doesn't involve "Y" at all? See Also: http://www.perlmonks.org/index.pl?node_id=542341 -Hoss http://www.lucidworks.com/
