GeoTop: Advancing Image Classification with Geometric-Topological Analysis

GeoTop is a mathematically principled framework that unifies Topological Data Analysis and Lipschitz-Killing Curvatures to resolve the diagnostic ambiguity of topologically equivalent structures by integrating robust topological signatures with precise geometric features, thereby achieving superior accuracy and interpretability in image classification tasks such as skin lesion diagnosis.

Mariem Abaach, Ian Morilla2026-03-05🤖 cs.LG

Sample-Optimal Locally Private Hypothesis Selection and the Provable Benefits of Interactivity

This paper presents a sample-optimal, locally differentially private algorithm for hypothesis selection that achieves the information-theoretic lower bound of Θ(k/(α2min{ε2,1}))\Theta(k/(\alpha^2 \min\{\varepsilon^2, 1\})) using only O(loglogk)O(\log \log k) rounds of interaction, thereby demonstrating the provable power of interactivity to overcome the Ω(klogk)\Omega(k \log k) sample complexity barrier inherent in non-interactive approaches.

Alireza F. Pour, Hassan Ashtiani, Shahab Asoodeh2026-03-05🤖 cs.LG

A Review of Reward Functions for Reinforcement Learning in the context of Autonomous Driving

This paper reviews and categorizes existing reward functions for reinforcement learning in autonomous driving into safety, comfort, progress, and traffic rule compliance, while highlighting their current limitations in standardization and context-awareness to propose future research directions for more robust and conflict-resolving reward designs.

Ahmed Abouelazm, Jonas Michel, J. Marius Zoellner2026-03-05🤖 cs.AI

A computational transition for detecting correlated stochastic block models by low-degree polynomials

This paper establishes that low-degree polynomial tests can distinguish between correlated sparse stochastic block models and independent Erdős-Rényi graphs if and only if the subsampling probability exceeds the minimum of Otter's constant and the Kesten-Stigum threshold, thereby identifying a sharp computational transition for detection and partial recovery.

Guanyi Chen, Jian Ding, Shuyang Gong + 1 more2026-03-05🤖 cs.LG

Curriculum-enhanced GroupDRO: Challenging the Norm of Avoiding Curriculum Learning in Subpopulation Shift Setups

This paper proposes Curriculum-enhanced Group Distributionally Robust Optimization (CeGDRO), a novel approach that strategically prioritizes hard bias-confirming and easy bias-conflicting samples to initialize model weights in an unbiased vantage point, thereby overcoming the limitations of traditional curriculum learning in subpopulation shift scenarios and achieving state-of-the-art performance across benchmark datasets.

Antonio Barbalau2026-03-05🤖 cs.AI