Finds documents that contain occurrences of the 1st argument which do not intersect with occurrences of the 2nd argument.
The function is alias for term1/term2.
Syntax
difference(term1, term2)
Arguments
Requires two arguments (terms).
Returned Value
Documents matching the query.
Examples
difference(a, phrase(a,b)) = a/phrase(a,b) matches a, a c, a b a but not a b.
difference(term(wordclass1), term(wordclass2)) = term(wordclass1)/term(wordclass2) matches documents that contain words present in wordclass1 but not in wordclass2.