2 papers
cs.LG2026
The Attribution Impossibility: No Feature Ranking Is Faithful, Stable, and Complete Under Collinearity
Drake Caraker, Bryan Arnold, David Rhoads
No feature ranking can be simultaneously faithful, stable, and complete when features are collinear. For collinear pairs, ranking reduces to a coin flip. We prove this impossibilit…
cs.LG2026
First-Mover Bias in Gradient Boosting Explanations: Mechanism, Detection, and Resolution
Drake Caraker, Bryan Arnold, David Rhoads
We identify first-mover bias -- path-dependent concentration of SHAP feature importance from sequential residual fitting in gradient boosting -- as a mechanistic contributor to att…