> > I think it should look something like this > > "white house" NOT "russian white house"~1
"a b c"~1 just matches more 'easily' than "a b c". It will match for instance "a b d c". The NOT however excludes all documents which match this, unlike requested logic. In fact, Q1: "a b" NOT "a b c"~1 is worse than Q2: "a b" NOT "a b c" in that a document containing "a b x c" should have been matched, and will be matched by Q2 but not with Q1. Both Q1 and Q2 will not match this: "a b x y z a b c" which should be matched... > "white house" UNLESS "russian white house" > > > > should not produce a match on the phrase: > > > > "russian white house" > > > > but should match: > > > > "white house" > > > > Where this differs from the NOT operator is that we don't want to rule > out > > a > > document just because it contains "russian white house", we just want to > > ignore the hit, so that this phrase: > > > > "... in the russian white house as opposed to the american white house > > ..." > > > > would return the document. > > > > Can this be accomplished using Lucene or Qsol QueryParser syntax, or do > we > > need to write something custom? >
