Fraud has a 2% base rate. Your detector fires on 90% of fraud cases — P(alert | fraud) = 0.9. A transaction just triggered an alert. What do you know about P(fraud | alert)?
Fraud has a 2% base rate. Your detector fires on 90% of fraud cases — P(alert | fraud) = 0.9. A transaction just triggered an alert. What do you know about P(fraud | alert)?