PathMem: Toward Cognition-Aligned Memory Transformation for Pathology MLLMs

PathMem is a memory-centric multimodal framework that enhances pathology large language models by organizing structured domain knowledge into long-term memory and utilizing a Memory Transformer to dynamically activate and ground this knowledge for improved diagnostic reasoning and report generation.

Jinyue Li, Yuci Liang, Qiankun Li, Xinheng Lyu, Jiayu Qian, Huabao Chen, Kun Wang, Zhigang Zeng, Anil Anthony Bharath, Yang LiuWed, 11 Ma🤖 cs.AI

No Image, No Problem: End-to-End Multi-Task Cardiac Analysis from Undersampled k-Space

The paper proposes k-MTR, a novel framework that bypasses the traditional image reconstruction step by directly learning multi-task cardiac diagnostic features from undersampled k-space data through a shared semantic manifold, thereby eliminating reconstruction artifacts and achieving competitive performance across regression, classification, and segmentation tasks.

Yundi Zhang, Sevgi Gokce Kafali, Niklas Bubeck, Daniel Rueckert, Jiazhen PanWed, 11 Ma🤖 cs.AI

When Learning Rates Go Wrong: Early Structural Signals in PPO Actor-Critic

This paper introduces the Overfitting-Underfitting Indicator (OUI) as an efficient, early-stage metric based on hidden neuron activation patterns to distinguish optimal learning rates in PPO actor-critic training, demonstrating its superior ability to prune unpromising runs compared to traditional criteria by revealing distinct structural signatures in actor and critic networks.

Alberto Fernández-Hernández, Cristian Pérez-Corral, Jose I. Mestre, Manuel F. Dolz, Jose Duato, Enrique S. Quintana-OrtíWed, 11 Ma🤖 cs.AI

Understanding the Use of a Large Language Model-Powered Guide to Make Virtual Reality Accessible for Blind and Low Vision People

This paper presents a study of a large language model-powered "sighted guide" for blind and low vision users in social virtual reality, revealing that participants adapt their interaction from a tool-based approach when alone to a companionable relationship in the presence of others, thereby offering key design recommendations for future accessible VR guides.

Jazmin Collins, Sharon Y Lin, Tianqi Liu, Andrea Stevenson Won, Shiri AzenkotWed, 11 Ma🤖 cs.AI

From Data Statistics to Feature Geometry: How Correlations Shape Superposition

This paper challenges the standard view of superposition in neural networks by demonstrating that, unlike in idealized uncorrelated settings where interference is merely noise, realistic feature correlations allow models to arrange features so that interference becomes constructive, thereby naturally forming the semantic clusters and cyclical structures observed in real language models.

Lucas Prieto, Edward Stevinson, Melih Barsbey, Tolga Birdal, Pedro A. M. MedianoWed, 11 Ma🤖 cs.AI

Automated Reinforcement Learning: An Overview

This paper provides a comprehensive overview of Automated Reinforcement Learning (AutoRL), surveying existing literature including recent LLM-based techniques, discussing promising non-tailored methods for future integration, and outlining current challenges and research directions in automating MDP modeling, algorithm selection, and hyper-parameter optimization.

Reza Refaei Afshar, Joaquin Vanschoren, Uzay Kaymak, Rui Zhang, Yaoxin Wu, Wen Song, Yingqian ZhangTue, 10 Ma🤖 cs.LG

Explainable classification of astronomical uncertain time series

This paper proposes an uncertainty-aware, explainable-by-design subsequence-based model that achieves state-of-the-art classification performance for astronomical uncertain time series by incorporating data uncertainty as an input, thereby enabling domain experts to inspect predictions and potentially inspire new theoretical astrophysics developments.

Michael Franklin Mbouopda (LIMOS, UCA), Emille E. O. Ishida (LIMOS, UCA), Engelbert Mephu Nguifo (LIMOS, UCA), Emmanuel Gangler (LPC, UCA)Tue, 10 Ma🔭 astro-ph

Survey of Computerized Adaptive Testing: A Machine Learning Perspective

This paper presents a machine learning-focused survey of Computerized Adaptive Testing (CAT), exploring how ML techniques can optimize measurement models, question selection, bank construction, and test control to create more robust, fair, and efficient adaptive assessment systems across various domains.

Yan Zhuang, Qi Liu, Haoyang Bi, Zhenya Huang, Weizhe Huang, Jiatong Li, Junhao Yu, Zirui Liu, Zirui Hu, Yuting Hong, Zachary A. Pardos, Haiping Ma, Mengxiao Zhu, Shijin Wang, Enhong ChenTue, 10 Ma🤖 cs.LG

Fast Explanations via Policy Gradient-Optimized Explainer

This paper introduces Fast Explanation (FEX), a novel framework that utilizes policy gradient optimization to represent attribution-based explanations as probability distributions, achieving over 97% reduction in inference time and 70% less memory usage compared to traditional model-agnostic methods while maintaining high-quality, scalable explanations for image and text classification tasks.

Deng Pan, Nuno Moniz, Nitesh ChawlaTue, 10 Ma🤖 cs.LG

Exploring Diffusion Models' Corruption Stage in Few-Shot Fine-tuning and Mitigating with Bayesian Neural Networks

This paper identifies a "corruption stage" in few-shot fine-tuned diffusion models caused by a narrowed learning distribution and proposes a Bayesian Neural Network approach with variational inference to broaden this distribution, thereby mitigating corruption and improving image fidelity, quality, and diversity without additional inference costs.

Xiaoyu Wu, Jiaru Zhang, Yang Hua, Bohan Lyu, Hao Wang, Tao Song, Haibing GuanTue, 10 Ma🤖 cs.LG