Real-time ML
Card fraud detection
- Rules at 5,000 payments/s
- A better model in 50 ms
- Features as of the payment
- One threshold per stream
- Retrain when attacks change
- Final test
Score every card payment before it reaches the card network. Start with rules, move to a model, give it features as of the payment time, set its threshold with money, and retrain it when attackers change.
Final testA card-testing burst lifts payments x1.5 for 12 h on day 20 of a 30-day run. Your final board runs once more with a new traffic seed.
Stage 5 of 5 · 5 parts given · 5,800 requests/s
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