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Most deep neural networks (DNNs) based ultrasound (US) medical image analysis models use pretrained backbones (e.g., ImageNet) for better model generalization. However, the domain gap between natural and medical images causes an inevitable…

计算机视觉与模式识别 · 计算机科学 2021-09-03 Yixiong Chen , Chunhui Zhang , Li Liu , Cheng Feng , Changfeng Dong , Yongfang Luo , Xiang Wan

Remaining useful life (RUL) estimation is a crucial component in the implementation of intelligent predictive maintenance and health management. Deep neural network (DNN) approaches have been proven effective in RUL estimation due to their…

机器学习 · 统计学 2024-10-28 Li Yang

Predicting and reasoning about the future lie at the heart of many time-series questions. For example, goal-conditioned reinforcement learning can be viewed as learning representations to predict which states are likely to be visited in the…

机器学习 · 计算机科学 2025-10-10 Chongyi Zheng , Ruslan Salakhutdinov , Benjamin Eysenbach

It is generally believed that robust training of extremely large networks is critical to their success in real-world applications. However, when taken to the extreme, methods that promote robustness can hurt the model's sensitivity to rare…

机器学习 · 计算机科学 2021-05-21 Seungyeon Kim , Daniel Glasner , Srikumar Ramalingam , Cho-Jui Hsieh , Kishore Papineni , Sanjiv Kumar

Effective Prognostics and Health Management (PHM) relies on accurate prediction of the Remaining Useful Life (RUL). Data-driven RUL prediction techniques rely heavily on the representativeness of the available time-to-failure trajectories.…

人工智能 · 计算机科学 2023-10-16 Ismail Nejjar , Fabian Geissmann , Mengjie Zhao , Cees Taal , Olga Fink

We present CURL: Contrastive Unsupervised Representations for Reinforcement Learning. CURL extracts high-level features from raw pixels using contrastive learning and performs off-policy control on top of the extracted features. CURL…

机器学习 · 计算机科学 2020-09-22 Aravind Srinivas , Michael Laskin , Pieter Abbeel

Self-supervised contrastive representation learning has proved incredibly successful in the vision and natural language domains, enabling state-of-the-art performance with orders of magnitude less labeled data. However, such methods are…

机器学习 · 计算机科学 2022-03-17 Dara Bahri , Heinrich Jiang , Yi Tay , Donald Metzler

Federated semi-supervised learning (FSSL), facilitates labeled clients and unlabeled clients jointly training a global model without sharing private data. Existing FSSL methods predominantly employ pseudo-labeling and consistency…

机器学习 · 计算机科学 2023-05-09 Qi Guo , Yong Qi , Saiyu Qi , Di Wu

Semi-supervised learning acts as an effective way to leverage massive unlabeled data. In this paper, we propose a novel training strategy, termed as Semi-supervised Contrastive Learning (SsCL), which combines the well-known contrastive loss…

计算机视觉与模式识别 · 计算机科学 2021-05-18 Yuhang Zhang , Xiaopeng Zhang , Robert. C. Qiu , Jie Li , Haohang Xu , Qi Tian

RUL estimation suffers from a server data imbalance where data from machines near their end of life is rare. Additionally, the data produced by a machine can only be labeled after the machine failed. Semi-Supervised Learning (SSL) can…

机器学习 · 计算机科学 2021-08-27 Tilman Krokotsch , Mirko Knaak , Clemens Gühmann

Relation extraction (RE), which has relied on structurally annotated corpora for model training, has been particularly challenging in low-resource scenarios and domains. Recent literature has tackled low-resource RE by self-supervised…

计算与语言 · 计算机科学 2023-06-01 Wenxuan Zhou , Sheng Zhang , Tristan Naumann , Muhao Chen , Hoifung Poon

Contrastive learning has achieved great success in skeleton-based representation learning recently. However, the prevailing methods are predominantly negative-based, necessitating additional momentum encoder and memory bank to get negative…

计算机视觉与模式识别 · 计算机科学 2024-12-17 Wanjiang Weng , Hongsong Wang , Junbo Wang , Lei He , Guosen Xie

Continual learning is inherently a constrained learning problem. The goal is to learn a predictor under a no-forgetting requirement. Although several prior studies formulate it as such, they do not solve the constrained problem explicitly.…

机器学习 · 计算机科学 2024-06-03 Juan Elenter , Navid NaderiAlizadeh , Tara Javidi , Alejandro Ribeiro

Self-supervised contrastive learning is a powerful tool to learn visual representation without labels. Prior work has primarily focused on evaluating the recognition accuracy of various pre-training algorithms, but has overlooked other…

计算机视觉与模式识别 · 计算机科学 2022-06-13 Yuanyi Zhong , Haoran Tang , Junkun Chen , Jian Peng , Yu-Xiong Wang

Contrastive representation learning has been outstandingly successful in practice. In this work, we identify two key properties related to the contrastive loss: (1) alignment (closeness) of features from positive pairs, and (2) uniformity…

机器学习 · 计算机科学 2022-08-17 Tongzhou Wang , Phillip Isola

Self-supervised learning (SSL) recently has achieved outstanding success on recommendation. By setting up an auxiliary task (either predictive or contrastive), SSL can discover supervisory signals from the raw data without human annotation,…

信息检索 · 计算机科学 2022-07-26 Yinghui Tao , Min Gao , Junliang Yu , Zongwei Wang , Qingyu Xiong , Xu Wang

The traditional paradigm for developing machine prognostics usually relies on generalization from data acquired in experiments under controlled conditions prior to deployment of the equipment. Detecting or predicting failures and estimating…

机器学习 · 计算机科学 2019-10-02 Yuantao Fan , Sławomir Nowaczyk , Thorsteinn Rögnvaldsson

In industrial applications, nearly half the failures of motors are caused by the degradation of rolling element bearings (REBs). Therefore, accurately estimating the remaining useful life (RUL) for REBs are of crucial importance to ensure…

机器学习 · 计算机科学 2022-08-31 Cheng Cheng , Guijun Ma , Yong Zhang , Mingyang Sun , Fei Teng , Han Ding , Ye Yuan

Adversarial attacks exploit the vulnerabilities of convolutional neural networks by introducing imperceptible perturbations that lead to misclassifications, exposing weaknesses in feature representations and decision boundaries. This paper…

机器学习 · 计算机科学 2024-12-30 Longwei Wang , Navid Nayyem , Abdullah Rakin

Distribution shifts are problems where the distribution of data changes between training and testing, which can significantly degrade the performance of a model deployed in the real world. Recent studies suggest that one reason for the…

机器学习 · 计算机科学 2023-04-10 Takuro Kutsuna