Whispering to a Blackbox: Bootstrapping Frozen OCR with Visual Prompts

This paper introduces "Whisperer," a sample-efficient visual prompting framework that bootstraps frozen OCR models by using a four-stage behavioral cloning curriculum to learn diffusion-based preprocessors that enhance degraded text inputs, achieving an 8% absolute reduction in Character Error Rate without modifying the downstream model's weights.

Samandar Samandarov, Nazirjon Ismoiljonov, Abdullah Sattorov + 1 more2026-03-06🤖 cs.AI

Latent Policy Steering through One-Step Flow Policies

The paper proposes Latent Policy Steering (LPS), a robust offline reinforcement learning method that achieves state-of-the-art performance by using a differentiable one-step MeanFlow policy to backpropagate original-action-space Q-gradients directly to a latent actor, thereby eliminating the need for proxy latent critics and sensitive hyperparameter tuning while ensuring policies remain within dataset support.

Hokyun Im, Andrey Kolobov, Jianlong Fu + 1 more2026-03-06🤖 cs.LG

How important are the genes to explain the outcome - the asymmetric Shapley value as an honest importance metric for high-dimensional features

This paper proposes using asymmetric Shapley values as a superior metric for quantifying the importance of high-dimensional genomic features in clinical prediction models, addressing limitations of traditional approaches by accounting for collinearity and known causal directions, and provides efficient algorithms validated through a colorectal cancer progression study.

Mark A. van de Wiel, Jeroen Goedhart, Martin Jullum + 1 more2026-03-06🤖 cs.LG

GALACTIC: Global and Local Agnostic Counterfactuals for Time-series Clustering

This paper introduces GALACTIC, a unified framework that bridges local and global counterfactual explainability for unsupervised time-series clustering by generating minimal perturbations to cross cluster boundaries and employing a provably efficient submodular optimization algorithm to derive concise, non-redundant global summaries of these transitions.

Christos Fragkathoulas, Eleni Psaroudaki, Themis Palpanas + 1 more2026-03-06🤖 cs.AI

Bayes with No Shame: Admissibility Geometries of Predictive Inference

This paper demonstrates that predictive inference is governed by four distinct, pairwise non-nested admissibility geometries—Blackwell risk dominance, anytime-valid supermartingales, marginal coverage, and Cesàro approachability—each offering a unique certificate of optimality and proving that admissibility is irreducibly relative to the chosen criterion rather than a universal property.

Nicholas G. Polson, Daniel Zantedeschi2026-03-06🔢 math

On the Statistical Optimality of Optimal Decision Trees

This paper establishes a comprehensive statistical theory for globally optimal empirical risk minimization decision trees by deriving sharp oracle inequalities and minimax optimal rates over a novel piecewise sparse heterogeneous anisotropic Besov space, thereby providing rigorous theoretical guarantees for their performance in high-dimensional regression and classification under both sub-Gaussian and heavy-tailed noise settings.

Zineng Xu, Subhroshekhar Ghosh, Yan Shuo Tan2026-03-06🔢 math

Preserving Continuous Symmetry in Discrete Spaces: Geometric-Aware Quantization for SO(3)-Equivariant GNNs

This paper proposes Geometric-Aware Quantization (GAQ), a framework that enables efficient, low-bit inference for SO(3)-equivariant Graph Neural Networks by decoupling magnitude and direction to rigorously preserve continuous symmetry, thereby achieving significant speedups and memory reductions on molecular simulation benchmarks without compromising physical consistency.

Haoyu Zhou, Ping Xue, Hao Zhang + 1 more2026-03-06🤖 cs.LG

Embedded Inter-Subject Variability in Adversarial Learning for Inertial Sensor-Based Human Activity Recognition

This paper proposes a novel deep adversarial framework that explicitly integrates inter-subject variability to learn subject-invariant feature representations, thereby significantly improving generalization and classification performance in inertial sensor-based Human Activity Recognition across unseen individuals.

Francisco M. Calatrava-Nicolás, Shoko Miyauchi, Vitor Fortes Rey + 3 more2026-03-06🤖 cs.LG