Late labels
Difficulty 4 of 5
A fraud model retrains each day on 30 days of payments. A payment is known as fraud only when its chargeback arrives: 25 percent in a week, 60 percent in 30 days, 95 percent in 45 days. A new attack starts on day 15. Keep fraud recall over 86 percent.
Options
- Train on the last 30 days
- Train on days 20 to 50 ago
- Train on days 45 to 75 ago
Goals and limits
- Recall
- at least 86%
- Error rate
- under 0.1%
- p99 latency
- under 100 ms
- Monthly cost
- under 300 USD/mo
- Traffic
- 500 req/s
Concepts
How players did
Player results load from the server.