arXivDaily arXiv每日学术速递 周一至周五更新

高校专区

Harvard University(哈佛大学)

2026-05-26 至 2026-05-26 共收录 15
2605.25446 2026-05-26 cs.AI cs.LG

A Signal-Language Foundation Model for Broad-Spectrum Cardiovascular Assessment from Routine Electrocardiography

面向常规心电图广谱心血管评估的信号-语言基础模型

Ziqing Yu, Yuhui Tao, Jiayu Huo, Lei Pan, Zilong Xiao, Juecheng Chen, Xiao Li, Jianxuan Li, You Zhou, Zhixing Li, Cong Wang, Beijian Zhang, Chen Chen, Hongyang Lu, Konstantinos Patlatzoglou, Daniel B. Kramer, Jonathan W. Waks, Yangang Su, Fu Siong Ng, Shuo Wang, Yixiu Liang, Junbo Ge

机构 * Department of Cardiology, Zhongshan Hospital of Fudan University(复旦大学中山医院心内科) Shanghai Institute of Cardiovascular Diseases, National Clinical Research Centre for Interventional Medicine(上海心血管病研究所,国家介入医学临床研究中心) Digital Medical Research Center, School of Basic Medical Sciences, Fudan University(复旦大学基础医学研究院数字医疗研究中心) Shanghai Key Laboratory of Medical Imaging Computing and Computer Assisted Intervention(上海医学影像计算与计算机辅助手术重点实验室) National Heart and Lung Institute, Imperial College London, Hammersmith Hospital, Du Cane Road(伦敦帝国学院国家心肺研究所,哈马舍姆医院,杜肯路) Department of Cardiology, Shanghai Geriatric Medical Center(上海老年医学中心心内科) Cardiac Rhythm Management, Medtronic Technology Center, Medtronic (Shanghai) Ltd.(美敦力技术中心,美敦力(上海)有限公司,心律管理部) Richard A. and Susan F. Smith Center for Outcomes Research in Cardiology, Beth Israel Deaconess Medical Center, Harvard Medical School(哈佛医学院比尔·德·阿克谢心脏结局研究中心,贝斯以色列·德aconess医疗中心) Harvard-Thorndike Electrophysiology Institute, Beth Israel Deaconess Medical Center, Harvard Medical School(哈佛-托尔恩迪克电生理研究所,贝斯以色列·德aconess医疗中心,哈佛医学院) Department of Cardiology, Imperial College Healthcare NHS Trust(伦敦帝国学院医疗信托心内科部) Department of Cardiology, Chelsea and Westminster NHS Foundation Trust(切尔西和温斯洛医院 NHS 基础信托心内科部) Department of Computer Science and Technology, University of Cambridge(剑桥大学计算机科学与技术系)

AI总结 提出ECGCLIP信号-语言对比学习框架,通过大规模心电图-报告预训练,在89项下游任务中超越基线,实现对常见心律失常、超声心动图靶标及罕见心脏病的广谱评估。

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2601.19743 2026-05-26 eess.IV cs.CV cs.LG

Interpretable and backpropagation-free Green Learning for efficient multi-task echocardiographic segmentation and classification

可解释且无需反向传播的绿色学习用于高效多任务超声心动图分割与分类

Jyun-Ping Kao, Jiaxin Yang, C. -C. Jay Kuo, Jonghye Woo

机构 * Harvard Medical School and Massachusetts General Hospital(哈佛医学院和麻省总医院) Graduate Institute of Biomedical Electronics and Bioinformatics(生物医学电子与生物信息学研究生院) University of Southern California(南加州大学)

AI总结 提出一种无需反向传播的多任务绿色学习框架,通过无监督VoxelHop编码器与多级回归解码器及XG-Boost分类器,在EchoNet-Dynamic数据集上实现左心室分割与射血分数分类,以极低参数量达到高精度。

Comments Accepted for publication in APSIPA Transactions on Signal and Information Processing. Jyun-Ping Kao and Jiaxing Yang contributed equally to this work. C.-C. Jay Kuo and Jonghye Woo are the senior authors

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2508.17090 2026-05-26 stat.ML cs.LG

Neural Stochastic Differential Equations on Compact State Spaces: Theory, Methods, and Application to Suicide Risk Modeling

紧致状态空间上的神经随机微分方程:理论、方法及其在自杀风险建模中的应用

Malinda Lu, Yue-Jane Liu, Matthew K. Nock, Yaniv Yacoby

机构 * Wellesley College(韦尔斯利学院) Harvard University(哈佛大学)

AI总结 针对生态瞬时评估数据中随机微分方程违反域约束和训练不稳定的问题,提出一种新型表达性SDE,通过约束漂移和扩散确保解在紧致多面体状态空间内,并引入参数化映射任意动力学为满足约束的SDE,在真实数据上提升预测和优化性能。

Comments Accepted at the Symposium on Probabilistic Machine Learning (ProbML) 2026, and at the Methods and Opportunities at Small Scale (MOSS), ICML 2025, Vancouver, Canada

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2605.24907 2026-05-26 cs.CL

Overview of the PsyDefDetect Shared Task at BioNLP 2026: Detecting Levels of Psychological Defense Mechanisms in Supportive Conversations

PsyDefDetect 共享任务概述:在支持性对话中检测心理防御机制水平

Hongbin Na, Zimu Wang, Zhaoming Chen, Yining Hua, Rena Gao, Kailai Yang, Ling Chen, Wei Wang, Shaoxiong Ji, John Torous, Sophia Ananiadou

机构 * University of Technology Sydney(技术大学悉尼) Xi’an Jiaotong-Liverpool University(西安交通大学-利物浦大学) University of Utah(犹他大学) Harvard University(哈佛大学) The University of Melbourne(墨尔本大学) The University of Manchester(曼彻斯特大学) ELLIS Institute Finland(芬兰ELLIS研究所) University of Turku(图尔库大学)

AI总结 本文介绍了与 BioNLP@ACL 2026 合办的 PsyDefDetect 共享任务,该任务基于临床验证的 DMRS 框架,要求系统将求助者话语分类为九个类别,最佳系统达到 0.420 的宏 F1 分数,但仍存在改进空间。

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2605.24743 2026-05-26 cs.LG cs.AI

Bilevel Optimization of Synthetic Trajectories for Multi-Turn LLM Fine-Tuning

用于多轮LLM微调的合成轨迹的双层优化

Shresth Verma, Mauricio Tec, Cheol Woo Kim, Kai Wang, Milind Tambe

机构 * Harvard University(哈佛大学) Georgia Institute of Technology(佐治亚理工学院)

AI总结 提出BOOST双层优化框架,通过内层加权训练和外层轻量级重加权头学习,解决合成轨迹质量异质性导致的LLM多轮交互性能下降问题。

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2604.12116 2026-05-26 cs.AI cs.SE

The A-R Behavioral Space: Execution-Level Profiling of Tool-Using Language Model Agents in Organizational Deployment

A-R行为空间:组织部署中工具使用语言模型代理的执行层剖析

Shasha Yu, Fiona Carroll, Barry L. Bentley

机构 * Cardiff School of Technologies, Cardiff Metropolitan University(卡迪夫技术学院,卡迪夫市政大学) School of Professional Studies, Clark University(专业研究学院,克拉克大学) Harvard Medical School, Harvard University(哈佛医学院,哈佛大学)

AI总结 提出基于动作率(A)和拒绝信号(R)的二维A-R空间及散度(D)来测量执行层行为,评估不同规范制度和自主性配置下语言模型代理的执行与拒绝分布模式。

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2603.10250 2026-05-26 cs.LG

GeMPO: Generalized Measure Matching for Online Diffusion Reinforcement Learning

GeMPO:在线扩散强化学习的广义度量匹配

Haitong Ma, Chenxiao Gao, Tianyi Chen, Na Li, Bo Dai

机构 * Harvard University(哈佛大学) Georgia Institute of Technology(佐治亚理工学院)

AI总结 提出GeMPO框架,通过将扩散RL中的重加权从softmax推广到一般单调函数,并引入负重加权机制,以解决过贪策略和负样本利用不足的问题。

Comments 22 pages, 6 figures

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2512.05791 2026-05-26 physics.med-ph cs.CV cs.LG math.PR

Fast and Robust Diffusion Posterior Sampling for MR Image Reconstruction Using the Preconditioned Unadjusted Langevin Algorithm

使用预条件未调整朗之万算法实现快速且鲁棒的MR图像重建扩散后验采样

Moritz Blumenthal, Tina Holliber, Jonathan I. Tamir, Martin Uecker

机构 * Institute of Biomedical Imaging, Graz University of Technology, Graz, Austria Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, USA Chandra Family Department of Electrical Engineering, University of Texas at Austin, USA Department of Diagnostic Medicine, Dell Medical School, University of Texas at Austin, USA

AI总结 针对MR图像重建中扩散后验采样速度慢和参数调优问题,提出基于预条件未调整朗之万算法的精确似然方法,实现快速收敛且无需调参的鲁棒采样。

Comments Submitted to Magnetic Resonance in Medicine

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2509.12194 2026-05-26 cs.AI cs.CV

Teaching large language models to reason like expert diagnosticians

教会大型语言模型像专家诊断医生一样推理

Thomas A. Buckley, Riccardo Conci, Peter G. Brodeur, Jason Gusdorf, Sourik Beltrán, Bita Behrouzi, Byron Crowe, Jacob Dockterman, Muzzammil Muhammad, Sarah Ohnigian, Andrew Sanchez, James A. Diao, Aashna P. Shah, Daniel Restrepo, Eric S. Rosenberg, Andrew S. Lea, Emily Glanton, Kimberly LeBlanc, Undiagnosed Diseases Network, Marinka Zitnik, Scott H. Podolsky, Zahir Kanjee, Raja-Elie E. Abdulnour, Jacob M. Koshy, Adam Rodman, Arjun K. Manrai

机构 * Department of Biomedical Informatics, Harvard Medical School(哈佛医学院生物医学信息学系) Department of Medicine, Beth Israel Deaconess Medical Center(贝塞斯达医院内科部) The Mongan Institute, Massachusetts General Hospital(麻省总医院蒙根研究所) Division of Gastroenterology, Brigham and Women’s Hospital(布里洛妇女医院胃肠病科) Department of Medicine, Brigham and Women’s Hospital(布里洛妇女医院内科部) Department of Medicine, Massachusetts General Hospital(麻省总医院内科部) Department of Pathology, Massachusetts General Hospital(麻省总医院病理学部) Department of Health Humanities and Bioethics, University of Rochester School of Medicine and Dentistry(罗切斯特大学医学院和牙科学院健康人文与生物伦理学部) Kempner Institute for the Study of Natural and Artificial Intelligence, Harvard University(哈佛大学凯普纳人工智能研究所) Center for the History of Medicine, Countway Library of Medicine, Harvard Medical School(哈佛医学院医学史中心,考特维图书馆) Department of Global Health and Social Medicine, Harvard Medical School(哈佛医学院全球健康与社会医学部) Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital(布里洛妇女医院呼吸科和重症医学科)

AI总结 提出 Dr. CaBot 代理 AI 系统,通过生成基于初始病例描述的幻灯片演示来模拟专家诊断推理,并在 NEJM CPC 和 NIH 未诊断疾病网络病例上取得优于前沿模型的表现,同时发布 CPC-Bench 基准以促进临床 AI 发展。

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2605.24326 2026-05-26 cs.DC cs.AI cs.NI

ScaleAcross Explorer: Exploring Communication Optimization for Scale-Across AI Model Training

ScaleAcross Explorer:探索跨规模AI模型训练的通信优化

Minghao Li, Alicia Golden, Samuel Hsia, Michael Kuchnik, Adi Gangidi, Xu Zhang, Ashmitha Jeevaraj Shetty, Zachary DeVito, Weiwei Chu, Dong He, Haoci Zhang, Yuchen Hao, Ruoming Pang, James Hongyi Zeng, Ying Zhang, Minlan Yu, Carole-Jean Wu

机构 * Harvard University(哈佛大学) Meta Platforms, Inc.(Meta平台公司)

AI总结 针对跨数据中心大规模AI模型训练(scale-across)的复杂设计空间,提出ScaleAcross Explorer优化器,通过联合优化并行放置、并行调度和网络层技术,实现高达64.62%的训练加速。

Comments 28 pages, 27 figures

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2605.24273 2026-05-26 cs.CV physics.ao-ph

Plume Segmentation from MethaneSAT with Cross-Sensor Transfer Learning and Physics-Informed Postprocessing

基于跨传感器迁移学习和物理信息后处理的MethaneSAT羽流分割

Manuel Pérez-Carrasco, Maya Nasr, Zhan Zhang, Apisada Chulakadabba, Javier Roger, Raia Ottenheimer, Sébastien Roche, Maryann Sargent, Chris Chan Miller, Daniel Varon, Jack Warren, Luis Guanter, Kang Sun, Jonathan Franklin, Jia Chen, Cecilia Garraffo, Xiong Liu, Ritesh Gautam, Steven Wofsy

机构 * Center for Astrophysics | Harvard & Smithsonian(哈佛-史密松天体物理中心) Environmental Defense Fund(环境防御基金) Department of Earth and Planetary Sciences, Harvard University(哈佛大学地球与行星科学系) Institute of Environmental Physics (IUP), University of Bremen(不莱梅大学环境物理研究所) John A. Paulson School of Engineering and Applied Sciences, Harvard University(哈佛大学约翰·A·保罗森工程与应用科学学院)

AI总结 提出一种结合Mask R-CNN、跨传感器迁移学习和物理信息后处理的机器学习框架,解决MethaneSAT甲烷羽流检测中的标签稀缺和推理可靠性问题,实现高灵敏度和高精度两种操作模式。

Comments 35 pages, 20 figures, 9 tables

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2605.24045 2026-05-26 cs.LG cs.AI

A Large-Scale Dataset and Benchmark: Do Protein-Ligand Models Learn Binding Sites or Just Binding Likelihood?

大规模数据集与基准:蛋白质-配体模型学习的是结合位点还是仅仅结合可能性?

Zhaohan Meng, Zhen Bai, Ke Yuan, Iadh Ounis, Zaiqiao Meng, Hao Xu, Joseph Loscalzo

机构 * School of Computing Science(计算科学学院) School of Cancer Sciences(癌症科学学院) School of Life Science and Technology(生命科学与技术学院) Institute of Science Tokyo(东京科学研究院) Cancer Research UK Scotland Institute(英国癌症研究会苏格兰研究所) Language Technology Lab(语言技术实验室) Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School(哈佛医学院内科部,布里格斯妇女医院) The Broad Institute of MIT and Harvard(MIT和哈佛大学Broad研究所)

AI总结 针对现有基准无法评估模型是否定位结合位点的问题,提出包含约10万对蛋白质-配体的InteractBind数据集和细粒度基准,通过结合位点定位任务揭示模型在强二元预测下定位能力有限。

Comments Under Review for the NeurIPS 2026 Conference, Track on Evaluations and Datasets

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2605.24002 2026-05-26 physics.chem-ph cond-mat.mtrl-sci cs.AI physics.comp-ph

Harnessing AtomisticSkills for Agentic Atomistic Research

利用原子技能实现代理原子研究

Bowen Deng, Bohan Li, Matthew Cox, Hoje Chun, Juno Nam, Artur Lyssenko, Sathya Edamadaka, Jurgis Ruza, Xiaochen Du, Nofit Segal, Jesus Diaz Sanchez, Mingrou Xie, Ty Perez, Yu Yao, Miguel Steiner, Sauradeep Majumdar, Charles B. Musgrave, Anirban Chandra, Abhirup Patra, Detlef Hohl, Connor W. Coley, Ju Li, Rafael Gómez-Bombarelli

机构 * Department of Materials Science Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA Department of Chemistry, Kookmin University, Seoul 02707, Republic of Korea Harvard University, Department of Chemistry Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA Department of Nuclear Science Shell Information Technology International Inc., Texas 77082, United States Shell International Exploration \& Production Inc., Texas 77079, United States

AI总结 提出AtomisticSkills框架,通过分层分解科学工作流为技能和工具,使通用AI编码代理能够进行原子级研究,并在多个科学任务中验证其能力。

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2510.07257 2026-05-26 cs.LG

Test-Time Graph Search for Goal-Conditioned Reinforcement Learning

测试时图搜索用于目标条件强化学习

Evgenii Opryshko, Junwei Quan, Claas Voelcker, Yilun Du, Igor Gilitschenski

机构 * Department of Computer Science, University of Toronto, Toronto, Canada(多伦多大学计算机科学系) Vector Institute, Toronto, Canada(向量研究所) University of Texas at Austin, Austin, USA(德克萨斯大学奥斯汀分校) Harvard University, Cambridge, USA(哈佛大学)

AI总结 提出测试时图搜索方法,通过构建离线数据集图并自适应选择子目标,在不额外训练的情况下显著提升目标条件强化学习在长时域任务中的成功率。

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2510.01384 2026-05-26 cs.LG

Fine-Tuning Masked Diffusion for Provable Self-Correction

微调掩码扩散以实现可证明的自校正

Jaeyeon Kim, Seunggeun Kim, Taekyun Lee, David Z. Pan, Hyeji Kim, Sham Kakade, Sitan Chen

机构 * Harvard University(哈佛大学) The University of Texas at Austin(德克萨斯大学奥斯汀分校) Kempner Institute(凯姆纳研究所)

AI总结 提出PRISM方法,通过轻量级模型无关的重新掩码策略,在掩码扩散模型中实现可证明的自校正,无需强化学习或验证器,提升低质量令牌检测与修正能力。

Comments Authorship statement: Jaeyeon Kim and Seunggeun Kim contributed equally, and Taekyun Lee is also a co first author

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