“Create a binary confusion matrix heatmap for invoice fraud screening with actual rows Clear and Fraud and predicted columns Clear and Review. Use counts: actual Clear predicted Clear 890 and Review 74; actual Fraud predicted Clear 9 and Review 27.”
図の背後にある意思決定を読み解く。
Missed fraud can carry high risk.
Extra reviews consume analyst time.
Review is not the same as confirmed fraud.
Use for threshold discussion with a documented labeling process.
よくある質問
What is a false negative here?
An actual fraud invoice predicted as Clear.
What is a false positive?
A clear invoice sent to Review.
Can a threshold change the matrix?
Yes. A stricter or looser threshold changes the balance of these errors.