I'd probably try an additive approach, but it seems any confidence metric based on these data would be pretty arbitrary. If I understand the problem, you could have zeros for all fields of two domains that are actually "linked" or you could have 3s for all fields of two domains that are not linked (proxies for private registration spring to mind.)

-sauoq
"My two cents aren't worth a dime.";

In reply to Re: Metric for confidence of complex match by sauoq
in thread Metric for confidence of complex match by japhy

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