@fgregg I understand the point which you are trying to make. But, doesn't ```threshold``` solve this problem ?
I believe "threshold" comes to our rescue here. It would not allow to match any record, which is below a particular threshold.
So, if there was a possibility that the record 1 do not match with any records in B, then the score of **all** the pairs of the record with record 1, would be very low.
Hence, it would not be included in our sub-graph.
So, does it not solve our problem ?