Signal Detection Theory

Signal State	Positive Detection	Negative Detection
Present	True Positive/Hit (TP)	False Negative/Miss/Type II Error (FN)
Absent	False Positive/False Alarm/Type I Error (FP)	True Negative (TN)
Let $+$ be the event of a positive detection, $-$ be the event of a negative detection, $P$ be the event of the signal being present, and $A$ being the event of the absence of the signal

Topics

• Test Specificity
• Test Sensitivity
• Positive Predictive Value
• Negative Predictive Value
• False Positive Rate
• False Negative Rate
• ROC Curve
• Precision-recall Curve
• F1 Score

Mnemonic

• 1 Pregnant Man and 2 Undetected Pregnant Women
• 🫃🤰🤰