: <str name="mm">2<-25%</str> : </lst> : </requestHandler> : : correct me if i am wrong isn't the above mm config means if its 1 or 2 : terms then match all but if its more than 2 terms then 25% can be : missing. i get below as parsed query
This is exactly what you asked in another thread, which i answered in the other thread... http://www.nabble.com/multiword-query-using-dismax-to20920925.html#a20920925 ...by refering to this exact example in the dismax docs... http://wiki.apache.org/solr/DisMaxRequestHandler both of the examples below ultimately mean that for more then 2 clauses "25% can be missing" ... the difference is in how fractions are dealt with: the percentage of the total number of clauses is computed and then rounded down to get an integer. If there was a minus sign in front of the percentage that integer is subtracted from the total number of clauses... 2<-25% ... 25% of 3 is 0.75, 0.75 rounded down is 0, 3-0 is 3 2<75% ... 75% of 3 is 2.25, 2.25 rounded down is 2. this is also mentioned *explicitly* in the other URL i refered you to last time... http://lucene.apache.org/solr/api/org/apache/solr/util/doc-files/min-should-match.html >> When dealing with percentages, negative values can be used to get >> different behavior in edge cases. 75% and -25% mean the same thing when >> dealing with 4 clauses, but when dealing with 5 clauses 75% means 3 are >> required, but -25% means 4 are required. It sounds like you want 75% instead of -25% -Hoss
