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Your DOB and last 4-5 of your SSN matched someone else? The reason I ask is because rules like this are often used to de-duplicate records. It's not perfect bu
by jasonkolb 13y ago
Your DOB and last 4-5 of your SSN matched someone else?
The reason I ask is because rules like this are often used to de-duplicate records. It's not perfect but it is useful, especially when trying to integrate data from more than one system. It's also used quite a bit in fraud detection etc. to find connections in the data.
- tracker1 13y agoThere were about 380K users in the various systems... so conflict chances were pretty high... I can't imagine what it would be like to have a name like "John Smith" or "Adam Jones" ... even more common...
- Dove 13y agoWell, there are 366 dates of birth, and 9999 last 4 digits in SSNs, so approximately 3.7M combinations. If you drop 380k users into 3.7M buckets, that's only ten times as many buckets as users. A lot of the buckets will be shared.