3 ms·
I went to a presentation where Capital one has an anomaly detection system for credit card fraud that could process a transaction below 1ms or even lower than t
by zitterbewegung 5y ago
I went to a presentation where Capital one has an anomaly detection system for credit card fraud that could process a transaction below 1ms or even lower than that. They had a system with around a Terabyte of memory using a streaming data system (I think it was spark).
This is a nontrivial system that has false positives and negatives.
- endisneigh 5y agoFalse positives or negatives don't really matter with credit card systems because you have recourse from the perspective of the end-user. Obviously Capital One incurs costs around such things and so they have complicated infrastructure developed, sure. However from the end user perspective: If you have a credit card and a fraudulent charge appears you call the credit card, they freeze the transaction, contact the vendor who may or may not be able to corroborate the legitimacy of the charge, and it's done. The alternative would be using cash, where it is not possible at all. So in comparison to the alternative, I do believe it's "trivial." That being said I regret using that word, I should've used "straightforward", instead.
- anamexis 5y agoThe merchant is also an end user, and they lose the money.