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An Additive Instance-Wise Approach to Multi-class Model Interpretation

ICLR 2023 · Label-efficient and robust learning › Recognition and long-tail · approach: Feature attribution methods · 0 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Instance-wise multi-class additive explainer (AIM) vs. L2X/LIME/VIBI/FI baselinesword-level text explanations, K=10 · IMDB, HateXplain, AG NewsFaithfulness (%): AIM highest on all three datasets (e.g., 99.62 vs 84.80 for best baseline L2X on IMDB)Helped
Inference from explainer weight matrix W instead of selector probabilities pi (top-10 by pi) (ablation)AIM · IMDBFaithfulness (%): nearly 20% drop in faithfulness when inferring from selectorHelped
Joint training of explainer with selector vs. selector-only training (ablation)AIM · IMDBFaithfulness (%)Helped
Learnable selector-based local sampling vs. heuristic (LIME-style uniform) sampling (ablation)AIM explainer training · IMDBFaithfulness (%)Helped
Instance-wise amortized training (AIM) vs. per-instance LIME/FI optimizationtraining time · IMDBTraining time (minutes): 11.19 vs 551.42 for LIME and 311.42 for FIHelped
Instance-wise AIM vs. LIME for stabilityexplanation stability · IMDBIoU (%): 6.11 vs 1.44 (LIME)Helped
Multi-class explainer producing class-specific explanations from one W matrix vs. LIMEclass-specific explanations · HateXplain and AG NewsPairwise IoU (%): 3.69 vs 66.91 (HateXplain); 9.24 vs 51.09 (AG News)Helped
Multi-class explainer AIM vs. LIME on class-specific faithfulnessIMDB class-specific explanations · IMDBClass-specific Faithfulness (%): 98.09 vs 50.02 for class 0Helped

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