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Automated fetal brain extraction from full-uterus MRI is a challenging task due to variable head sizes, orientations, complex anatomy, and prevalent artifacts. While deep-learning (DL) models trained on synthetic images have been successful…

图像与视频处理 · 电气工程与系统科学 2024-10-30 Javid Dadashkarimi , Valeria Pena Trujillo , Camilo Jaimes , Lilla Zöllei , Malte Hoffmann

Federated learning is a powerful technique that enables collaborative learning among different clients. Prototype-based federated learning is a specific approach that improves the performance of local models under non-IID (non-Independently…

分布式、并行与集群计算 · 计算机科学 2024-01-19 Biwei Yan , Hongliang Zhang , Minghui Xu , Dongxiao Yu , Xiuzhen Cheng

Reinforcement learning from human feedback (RLHF) is the mainstream paradigm used to align large language models (LLMs) with human preferences. Yet existing RLHF heavily relies on accurate and informative reward models, which are vulnerable…

计算与语言 · 计算机科学 2024-03-15 Wei Shen , Xiaoying Zhang , Yuanshun Yao , Rui Zheng , Hongyi Guo , Yang Liu

As machine learning has moved towards leveraging large models as priors for downstream tasks, the community has debated the right form of prior for solving reinforcement learning (RL) problems. If one were to try to prefetch as much…

机器学习 · 计算机科学 2026-02-13 Chongyi Zheng , Royina Karegoudra Jayanth , Benjamin Eysenbach

In many machine learning applications, there are multiple decision-makers involved, both automated and human. The interaction between these agents often goes unaddressed in algorithmic development. In this work, we explore a simple version…

机器学习 · 统计学 2018-09-10 David Madras , Toniann Pitassi , Richard Zemel

In Reinforcement Learning, the trade-off between exploration and exploitation poses a complex challenge for achieving efficient learning from limited samples. While recent works have been effective in leveraging past experiences for policy…

机器学习 · 计算机科学 2024-02-27 Nico Messikommer , Yunlong Song , Davide Scaramuzza

Modern Review Helpfulness Prediction systems are dependent upon multiple modalities, typically texts and images. Unfortunately, those contemporary approaches pay scarce attention to polish representations of cross-modal relations and tend…

计算与语言 · 计算机科学 2026-05-13 Thong Nguyen , Xiaobao Wu , Anh-Tuan Luu , Cong-Duy Nguyen , Zhen Hai , Lidong Bing

With the fast-growing number of classification models being produced every day, numerous model interpretation and comparison solutions have also been introduced. For example, LIME and SHAP can interpret what input features contribute more…

机器学习 · 计算机科学 2022-01-21 Junpeng Wang , Liang Wang , Yan Zheng , Chin-Chia Michael Yeh , Shubham Jain , Wei Zhang

Time series forecasting (TSF) holds significant importance in modern society, spanning numerous domains. Previous representation learning-based TSF algorithms typically embrace a contrastive learning paradigm featuring segregated…

机器学习 · 计算机科学 2023-12-12 Jiaxin Gao , Yuxiao Hu , Qinglong Cao , Siqi Dai , Yuntian Chen

Early detection of mental disorder is crucial as it enables prompt intervention and treatment, which can greatly improve outcomes for individuals suffering from debilitating mental affliction. The recent proliferation of mental health…

机器学习 · 计算机科学 2023-05-12 Ai-Te Kuo , Haiquan Chen , Yu-Hsuan Kuo , Wei-Shinn Ku

Contrastive learning has shown promising potential for learning robust representations by utilizing unlabeled data. However, constructing effective positive-negative pairs for contrastive learning on facial behavior datasets remains…

计算机视觉与模式识别 · 计算机科学 2023-08-28 Xiang Zhang , Taoyue Wang , Xiaotian Li , Huiyuan Yang , Lijun Yin

Recently, there has been a growing interest in time series foundation models that generalize across different downstream tasks. A key to strong foundation models is a diverse pre-training dataset, which is particularly challenging to…

机器学习 · 计算机科学 2024-12-10 Songkang Wen , Vasilii Feofanov , Jianfeng Zhang

Continual learning (CL) involves acquiring and accumulating knowledge from evolving tasks while alleviating catastrophic forgetting. Recently, leveraging contrastive loss to construct more transferable and less forgetful representations has…

机器学习 · 计算机科学 2025-09-22 Jia Tang , Xinrui Wang , Songcan Chen

Bayesian Federated Learning (BFL) enables uncertainty quantification and robust adaptation in distributed learning. In contrast to the frequentist approach, it estimates the posterior distribution of a global model, offering insights into…

机器学习 · 计算机科学 2025-04-23 Usevalad Milasheuski , Luca Barbieri , Sanaz Kianoush , Monica Nicoli , Stefano Savazzi

This paper proposes a generative adversarial network and federated learning-based model to address various challenges of the smart prediction and recommendation applications, such as high response time, compromised data privacy, and data…

分布式、并行与集群计算 · 计算机科学 2025-10-27 Anwesha Mukherjee , Rajkumar Buyya

In safe reinforcement learning, agent needs to balance between exploration actions and safety constraints. Following this paradigm, domain transfer approaches learn a prior Q-function from the related environments to prevent unsafe actions.…

机器学习 · 计算机科学 2025-04-29 Duc Kien Doan , Bang Giang Le , Viet Cuong Ta

We study generating abstractive summaries that are faithful and factually consistent with the given articles. A novel contrastive learning formulation is presented, which leverages both reference summaries, as positive training data, and…

计算与语言 · 计算机科学 2021-09-21 Shuyang Cao , Lu Wang

Pre-training representations (a.k.a. foundation models) has recently become a prevalent learning paradigm, where one first pre-trains a representation using large-scale unlabeled data, and then learns simple predictors on top of the…

机器学习 · 计算机科学 2023-03-02 Zhenmei Shi , Jiefeng Chen , Kunyang Li , Jayaram Raghuram , Xi Wu , Yingyu Liang , Somesh Jha

Contrastive learning is a popular form of self-supervised learning that encourages augmentations (views) of the same input to have more similar representations compared to augmentations of different inputs. Recent attempts to theoretically…

This work introduces a novel methodology for assessing catastrophic forgetting (CF) in continual learning. We propose a new conformal prediction (CP)-based metric, termed the Conformal Prediction Confidence Factor (CPCF), to quantify and…

机器学习 · 计算机科学 2025-05-19 Ioannis Pitsiorlas , Nour Jamoussi , Marios Kountouris