Calculates scores for documents matching a query by taking the complement (subtracting from 1) the scores for the query’s search elements. Following is an example of search syntax:

<COMPLEMENT> ("computers")

The COMPLEMENT operator is a unary operator. It multiplies search elements as specified. The elements are combined, using the ACCRUE operator by default, to generate a single score which is then complemented. A sample query expression with two search elements is below:

<COMPLEMENT> ("computers","laptops")

In the above example, the query is evaluated as the word "computers" accrued using the ACCRUE operator with the word "laptops". The COMPLEMENT operator is applied to the result.