Reverse matching

With some match comparisons, you can reverse the weights.

By default, the agreement weight is assigned whenever the columns agree and the disagreement weight is assigned whenever the columns disagree. But with the following match comparisons you can use reverse matching to assign the agreement weight whenever the columns disagree and the disagreement weights whenever the columns agree.

• CHAR
• CNT_DIFF
• DATE
• DELTA_PERCENT
• INT_TO_INT
• NUMERIC
• PREFIX
• PRORATED
• UNCERT

You invoke reverse matching in the Match Command window of the Match Designer. First select one of the appropriate match comparisons, then select an available column, and select Reverse.

For the comparison requiring arguments, such as PRORATED, the roles of the agreement weight and disagreement weight are reversed. For example, the full agreement weight is assigned if the columns are different to a degree greater than the parameter specified, and the full disagreement weight is assigned if the columns are equal.