importance-weighting

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#importance-weighting

Heckman-Corrected Epistemic Uncertainty: Selection on Unobservables Defeats Importance Weighting

arXiv cs.LG · 2026-07-08 Cached

This paper introduces Heckman-corrected epistemic uncertainty to address selection on unobservables in machine learning, demonstrating that importance weighting fails when selection depends on unobservables correlated with outcomes. The method restores calibration in controlled experiments and real data, outperforming standard UQ baselines.

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#importance-weighting

@qingke_ai: https://x.com/qingke_ai/status/2073975637904380059

X AI KOLs Timeline · 2026-07-06 Cached

This paper investigates the position bias phenomenon in online distillation, finding that early tokens provide more useful supervision signals, and proposes the importance-weighted IW-OPD method to improve OPD training.

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#importance-weighting

DRIFT: Decoupled Rollouts and Importance-Weighted Fine-Tuning for Efficient Multi-Turn Optimization

Hugging Face Daily Papers · 2026-05-29 Cached

This paper proposes DRIFT, a framework that combines offline trajectories with importance-weighted supervised fine-tuning to efficiently achieve multi-turn interactive learning performance comparable to reinforcement learning.

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#importance-weighting

TILT: Target-induced loss tilting under covariate shift

arXiv cs.LG · 2026-05-15 Cached

TILT introduces a novel objective for unsupervised domain adaptation under covariate shift that penalizes an auxiliary component on unlabeled target data, implicitly achieving self-localized importance weighting with bounded estimands. Theoretical guarantees and experiments on shifted CIFAR-100 show improved target performance over baselines.

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