Imperial College London（帝国理工学院）

Diffusion Alignment Beyond KL: Variance Minimisation as Effective Policy Optimiser

扩散对齐超越KL：方差最小化作为有效的策略优化器

Zijing Ou, Jacob Si, Junyi Zhu, Ondrej Bohdal, Mete Ozay, Taha Ceritli, Yingzhen Li

机构 * Imperial College London（帝国理工学院伦敦分校） ； Samsung R&D Institute UK（三星英国研发中心） 纠错

AI总结 本文提出方差最小化策略优化方法，通过最小化对数重要权重的方差来实现扩散对齐，超越传统KL优化，提供新的设计方向。

Deep Kernel Fusion for Transformers

基于变压器的深度核融合

Zixi Zhang, Zhiwen Mo, Yiren Zhao, Robert Mullins

机构 * Imperial College London（帝国理工学院伦敦分校） ； University of Cambridge（剑桥大学） 纠错

AI总结 本研究提出DeepFusionKernel，通过深度融合内核减少HBM流量并提高缓存复用，实现大语言模型在长上下文推理中的性能提升。

Advances in Automated Fetal Brain MRI Segmentation and Biometry: Insights from the FeTA 2024 Challenge

自动化胎儿脑MRI分割与生物测量的进展：来自FeTA 2024挑战的见解

Vladyslav Zalevskyi, Thomas Sanchez, Misha Kaandorp, Margaux Roulet, Diego Fajardo-Rojas, Liu Li, Jana Hutter, Hongwei Bran Li, Matthew Barkovich, Hui Ji, Luca Wilhelmi, Aline Dändliker, Céline Steger, Mériam Koob, Yvan Gomez, Anton Jakovčić, Melita Klaić, Ana Adžić, Pavel Marković, Gracia Grabarić, Milan Rados, Jordina Aviles Verdera, Gregor Kasprian, Gregor Dovjak, Raphael Gaubert-Rachmühl, Maurice Aschwanden, Qi Zeng, Davood Karimi, Denis Peruzzo, Tommaso Ciceri, Giorgio Longari, Rachika E. Hamadache, Amina Bouzid, Xavier Lladó, Simone Chiarella, Gerard Martí-Juan, Miguel Ángel González Ballester, Marco Castellaro, Marco Pinamonti, Valentina Visani, Robin Cremese, Keïn Sam, Fleur Gaudfernau, Param Ahir, Mehul Parikh, Maximilian Zenk, Michael Baumgartner, Klaus Maier-Hein, Li Tianhong, Yang Hong, Zhao Longfei, Domen Preloznik, Žiga Špiclin, Jae Won Choi, Muyang Li, Jia Fu, Guotai Wang, Jingwen Jiang, Lyuyang Tong, Bo Du, Andrea Gondova, Sungmin You, Kiho Im, Abdul Qayyum, Moona Mazher, Steven A Niederer, Andras Jakab, Roxane Licandro, Kelly Payette, Meritxell Bach Cuadra

机构 * organization= Department of Radiology, Lausanne University Hospital ； University of Lausanne , city= Lausanne , country= Switzerland ； organization= CIBM Center for Biomedical Imaging , city= Lausanne , country= Switzerland ； organization= Department of Early Life Imaging, School of Biomedical Engineering \& Imaging Sciences, King’s College London , city= London , country= UK ； organization= Smart Imaging Lab, University Hospital Erlangen , city= Erlangen , country= Germany ； organization= Center for MR-Research, University Children’s Hospital Zurich, University of Zurich , city= Zurich , country= Switzerland ； organization= Neuroscience Center Zurich, University of Zurich , city= Zurich , country= Switzerland ； organization= National Heart \& Lung Institute, Imperial College London , city= London , country= UK ； organization= University of California, San Francisco ； UCSF Benioff Children’s Hospital , city= San Francisco , state= California , country= USA ； organization= Department of Quantitative Biomedicine, University of Zurich , city= Zurich , country= Switzerland ； organization= Department of Informatics, Technical University of Munich , city= Munich , country= Germany ； organization= Boston Children’s Hospital, Harvard Medical School , city= Boston , state= Massachusetts , country= USA ； organization= Neuroimaging Unit, Scientific Institute IRCCS E. Medea , city= Bosisio Parini , country= Italy ； organization= Department of Informatics, Systems ； Communication, University of Milano Bicocca , city= Milan , country= Italy ； organization= Research Institute of Computer Vision ； organization= BCN MedTech, Department of Engineering, Universitat Pompeu Fabra , city= Barcelona , country= Spain ； organization= Department of Information Engineering, University of Padova , city= Padova , country= Italy ； organization= Institut Pasteur, Université Paris Cité, CNRS UMR 3571, Decision ； organization= Inria, HeKA, PariSantéCampus , city= Paris , country= France ； organization= L. D. College of Engineering , city= Gujarat , country= India ； organization= Medical Faculty Heidelberg, Heidelberg University , addressline= Pattern Analysis ； Learning Group, Department of Radiation Oncology, Heidelberg University Hospital , city= Heidelberg , country= Germany ； organization= Canon Medical Systems (China) Co., Ltd , city= , country= China ； organization= Faculty of Electrical Engineering, University of Ljubljana , city= Ljubljana , country= Slovenia ； organization= Department of Radiology, Seoul National University Hospital , city= Seoul , country= South Korea ； organization= School of Mechanical ； Electrical Engineering, University of Electronic Science ； organization= School of Computer Science, Wuhan University , city= Wuhan , country= China ； Developmental Science Center, Boston Children’s Hospital, Harvard Medical School , city= Boston , state= Massachusetts , country= USA ； organization= Hawkes Institute, Department of Computer Science, University College London , city= London , country= UK ； organization= Laboratory for Computational Neuroimaging, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital/Harvard Medical School , city= Charlestown , state= Massachusetts , country= USA ； organization= Department of Biomedical Imaging ； Image-guided Therapy, Computational Imaging Research Lab (CIR), Early Life Image Analysis Group, Medical University of Vienna , city= Vienna , country= Austria ； organization= University Research Priority Project Adaptive Brain Circuits in Development ； Learning (AdaBD), University of Zurich , city= Zurich , country= Switzerland ； organization= Sagol Brain Institute, Tel Aviv Sourasky Medical Center ； School of EE, Tel-Aviv University , city= Tel-Aviv , country= Israel ； organization= Department of Medical Imaging Sciences, The Faculty of Social Welfare ； Health Sciences, University of Haifa , city= Haifa , country= Israel ； Faculty of Medicine ； Sagol School of Neuroscience, Tel-Aviv University , city= Tel-Aviv , country= Israel ； organization= Department Woman-Mother-Child, CHUV , city= Lausanne , country= Switzerland ； organization= BCNatal Fetal Medicine Research Center (Hospital Clínic ； Hospital Sant Joan de Déu), Universitat de Barcelona , city= Barcelona , country= Spain ； organization= German Cancer Research Center (DKFZ) Heidelberg, Division of Medical Image Computing , city= Heidelberg , country= Germany ； organization= Helmholtz Imaging, German Cancer Research Center (DKFZ) , city= Heidelberg , country= Germany ； organization= Faculty of Mathematics ； Computer Science, Heidelberg University , city= Heidelberg , country= Germany ； organization= University of Zurich , city= Zurich , country= Switzerland ； organization= Croatian Institute for Brain Research, School of Medicine, University of Zagreb , city= Zagreb , country= Croatia ； organization= Department of Biomedical Engineering, School of Biomedical Engineering \& Imaging Sciences, King’s College , city= London , country= United Kingdom ； Musculoskeletal Radiology, Medical University of Vienna , city= Vienna , country= Austria ； organization= Division of Newborn Medicine, Boston Children’s Hospital, Harvard Medical School , city= Boston , state= Massachusetts , country= USA ； organization= Department of Radiology, Boston Children’s Hospital, Harvard Medical School , city= Boston , state= Massachusetts , country= USA 纠错

AI总结 FeTA 2024挑战通过引入生物测量预测和低场MRI数据，推动了胎儿脑MRI分割与生物测量的自动化进展，揭示了拓扑差异和成像系统对分割性能的影响。

The Canary's Echo: Auditing Privacy Risks of LLM-Generated Synthetic Text

知更鸟的回声：审计大语言模型生成合成文本的隐私风险

Matthieu Meeus, Lukas Wutschitz, Santiago Zanella-Béguelin, Shruti Tople, Reza Shokri

机构 * Imperial College London（帝国理工学院伦敦分校） ； Microsoft（微软公司） ； National University of Singapore（新加坡国立大学） 纠错

AI总结 本文提出通过设计具有分布内前缀和高困惑度后缀的知更鸟，提高基于数据的MIAs的威力，以更准确评估LLM生成合成数据的隐私风险。

Comments 42nd International Conference on Machine Learning (ICML 2025)

Journal ref Proc. Mach. Learn. Res. 267 (2025) 43557-43580