Flow Field Reconstruction via Voronoi-Enhanced Physics-Informed Neural Networks with End-to-End Sensor Placement Optimization

This paper proposes VSOPINN, a novel framework that integrates differentiable Voronoi tessellation with Physics-Informed Neural Networks to enable end-to-end optimization of sensor placement, thereby significantly enhancing the accuracy and robustness of high-fidelity flow field reconstruction under sparse measurements and sensor failures.

Renjie Xiao, Bingteng Sun, Yiling Chen, Lin Lu, Qiang Du, Junqiang Zhu2026-03-11🤖 cs.LG

SPAARS: Safer RL Policy Alignment through Abstract Exploration and Refined Exploitation of Action Space

SPAARS is a curriculum learning framework for offline-to-online reinforcement learning that safely improves policies by initially exploring a low-dimensional latent space to ensure sample efficiency and stability, then seamlessly transitioning to raw action space to bypass decoder-induced performance ceilings, thereby achieving superior results over state-of-the-art baselines on both robotic manipulation and locomotion tasks.

Swaminathan S K, Aritra Hazra2026-03-11🤖 cs.AI

Reviving ConvNeXt for Efficient Convolutional Diffusion Models

This paper introduces the Fully Convolutional Diffusion Model (FCDM), a ConvNeXt-based architecture that achieves competitive generative performance with significantly fewer computational resources and training steps than Transformer-based counterparts, demonstrating that modern convolutional designs remain a highly efficient alternative for scaling diffusion models.

Taesung Kwon, Lorenzo Bianchi, Lennart Wittke, Felix Watine, Fabio Carrara, Jong Chul Ye, Romann Weber, Vinicius Azevedo2026-03-11🤖 cs.AI

Reconstructing Movement from Sparse Samples: Enhanced Spatio-Temporal Matching Strategies for Low-Frequency Data

This paper proposes four enhancements to the Spatial-Temporal Matching algorithm—dynamic buffering, adaptive observation probability, a redesigned temporal scoring function, and behavioral analysis—to improve the efficiency and accuracy of reconstructing GPS trajectories from sparse, low-frequency data in dense urban environments, as validated by experiments in Milan.

Ali Yousefian, Arianna Burzacchi, Simone Vantini2026-03-11🤖 cs.LG

TrainDeeploy: Hardware-Accelerated Parameter-Efficient Fine-Tuning of Small Transformer Models at the Extreme Edge

TrainDeeploy is a novel framework that enables efficient, parameter-efficient on-device fine-tuning of both CNN and Transformer models on ultra-low-power, memory-constrained RISC-V SoCs, achieving significant reductions in memory usage and computational overhead while supporting end-to-end training at the extreme edge.

Run Wang, Victor J. B. Jung, Philip Wiese, Francesco Conti, Alessio Burrello, Luca Benini2026-03-11🤖 cs.LG

You Didn't Have to Say It like That: Subliminal Learning from Faithful Paraphrases

This paper demonstrates that language models can covertly acquire behavioral traits from a teacher model through "subliminal learning" on faithful paraphrases, where the student adopts the teacher's preferences even when the paraphrased content is semantically unrelated or explicitly contradicts those preferences, rendering content-based inspection ineffective.

Isaia Gisler (ETH Zürich), Zhonghao He (University of Cambridge), Tianyi Qiu (Peking University)2026-03-11🤖 cs.LG

Efficiently Aligning Draft Models via Parameter- and Data-Efficient Adaptation

This paper introduces Efficient Draft Adaptation (EDA), a parameter- and data-efficient framework that restores speculative decoding performance on fine-tuned target models through a decoupled architecture, data regeneration strategy, and sample selection mechanism, achieving superior acceptance lengths with significantly reduced training costs compared to full retraining.

Luxi Lin, Zhihang Lin, Zhanpeng Zeng, Yuhao Chen, Qingyu Zhang, Jixiang Luo, Xuelong Li, Rongrong Ji2026-03-11🤖 cs.AI

What Do We Care About in Bandits with Noncompliance? BRACE: Bandits with Recommendations, Abstention, and Certified Effects

This paper introduces BRACE, a parameter-free algorithm for multi-armed bandits with noncompliance that simultaneously optimizes recommendation welfare and treatment learning by performing certified instrumental variable inversion only when identification is strong, otherwise providing honest structural intervals to navigate the trade-offs between mediated and direct-control regimes.

Nicolás Della Penna2026-03-11🤖 cs.LG

Learning Bayesian and Markov Networks with an Unreliable Oracle

This paper investigates constraint-based structure learning for Markov and Bayesian networks using an unreliable oracle, demonstrating that Markov networks remain uniquely identifiable under bounded errors if vertex-wise disjoint paths are limited, whereas Bayesian networks cannot tolerate any errors for guaranteed identification, and subsequently providing algorithms for cases where unique identifiability holds.

Juha Harviainen, Pekka Parviainen, Vidya Sagar Sharma2026-03-11🤖 cs.LG

SCDP: Learning Humanoid Locomotion from Partial Observations via Mixed-Observation Distillation

The paper introduces Sensor-Conditioned Diffusion Policies (SCDP), a novel framework that enables robust humanoid locomotion using only onboard sensors by distilling privileged full-body knowledge through mixed-observation training and specialized denoising techniques, successfully achieving near-perfect simulation performance and real-world deployment on a G1 robot without explicit state estimation.

Milo Carroll, Tianhu Peng, Lingfan Bao, Chengxu Zhou, Zhibin Li2026-03-11🤖 cs.LG

Routing without Forgetting

The paper introduces Routing without Forgetting (RwF), a transformer architecture that addresses Online Continual Learning by replacing iterative gradient-based specialization with dynamic, single-step associative retrieval of input-conditioned prompts via energy-based layers, thereby achieving superior performance on class-incremental benchmarks without explicit task identifiers.

Alessio Masano, Giovanni Bellitto, Dipam Goswani, Joost Van de Weijer, Concetto Spampinato2026-03-11🤖 cs.AI