Definition A lagging indicator is a metric that confirms the impact of changes after they have already occurred. Characteristics Examples in Machine Learning Why They Matter Example Here, the lagging indicator proves the model is now underperforming. SummaryLagging indicators = outcome metrics that confirm the actual impact on model performance or business results.They are reactive…
1) Meaning Discriminatory Power is the ability of a model, test, or scoring system to distinguish correctly between two groups — typically positive vs. negative outcomes (e.g., good vs. bad credit, disease vs. healthy, responder vs. non-responder). In simple terms: “How well can the model separate those who will do X from those who won’t?”…
1) Meaning The KS statistic is a measure of the maximum difference between two cumulative distribution functions (CDFs). Intuition: 2) Formula For binary classification (positive = 1, negative = 0): $KS = \max_x \; | F_{\text{positive}}(x) – F_{\text{negative}}(x) |$ Where $F$ = cumulative distribution. 3) Example Suppose we score 1,000 customers with a credit risk…