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Contrastive learning predicts whether two images belong to the same category by training a model to make their feature representations as close or as far away as possible. In this paper, we rethink how to mine samples in contrastive…

计算机视觉与模式识别 · 计算机科学 2023-11-02 Hengkui Dong , Xianzhong Long , Yun Li

Complex data mining has wide application value in many fields, especially in the feature extraction and classification tasks of unlabeled data. This paper proposes an algorithm based on self-supervised learning and verifies its…

机器学习 · 计算机科学 2025-04-08 Yingbin Liang , Lu Dai , Shuo Shi , Minghao Dai , Junliang Du , Haige Wang

Collecting large-scale datasets is crucial for training deep models, annotating the data, however, inevitably yields noisy labels, which poses challenges to deep learning algorithms. Previous efforts tend to mitigate this problem via…

计算机视觉与模式识别 · 计算机科学 2023-02-16 Yuanpeng Tu , Boshen Zhang , Yuxi Li , Liang Liu , Jian Li , Jiangning Zhang , Yabiao Wang , Chengjie Wang , Cai Rong Zhao

Semi-Supervised Learning (SSL) can leverage abundant unlabeled data to boost model performance. However, the class-imbalanced data distribution in real-world scenarios poses great challenges to SSL, resulting in performance degradation.…

计算机视觉与模式识别 · 计算机科学 2025-01-13 Yin Wang , Zixuan Wang , Hao Lu , Zhen Qin , Hailiang Zhao , Guanjie Cheng , Ge Su , Li Kuang , Mengchu Zhou , Shuiguang Deng

Negative sampling schemes enable efficient training given a large number of classes, by offering a means to approximate a computationally expensive loss function that takes all labels into account. In this paper, we present a new connection…

Traditionally, in supervised machine learning, (a significant) part of the available data (usually 50% to 80%) is used for training and the rest for validation. In many problems, however, the data is highly imbalanced in regard to different…

机器学习 · 计算机科学 2020-04-21 Xiaowei Gu , Plamen P Angelov , Eduardo Almeida Soares

Recently, learning from vast unlabeled data, especially self-supervised learning, has been emerging and attracted widespread attention. Self-supervised learning followed by the supervised fine-tuning on a few labeled examples can…

计算机视觉与模式识别 · 计算机科学 2022-03-01 Wentao Zhu , Hang Shang , Tingxun Lv , Chao Liao , Sen Yang , Ji Liu

Previous deep learning approaches for survival analysis have primarily relied on ranking losses to improve discrimination performance, which often comes at the expense of calibration performance. To address such an issue, we propose a novel…

机器学习 · 计算机科学 2024-11-22 Dongjoon Lee , Hyeryn Park , Changhee Lee

Recent years have witnessed many successful applications of contrastive learning in diverse domains, yet its self-supervised version still remains many exciting challenges. As the negative samples are drawn from unlabeled datasets, a…

机器学习 · 计算机科学 2024-02-01 Bin Liu , Bang Wang , Tianrui Li

Recently, unsupervised adversarial training (AT) has been highlighted as a means of achieving robustness in models without any label information. Previous studies in unsupervised AT have mostly focused on implementing self-supervised…

机器学习 · 计算机科学 2023-10-27 Minseon Kim , Hyeonjeong Ha , Sooel Son , Sung Ju Hwang

Triplet loss has been widely employed in a wide range of computer vision tasks, including local descriptor learning. The effectiveness of the triplet loss heavily relies on the triplet selection, in which a common practice is to first…

计算机视觉与模式识别 · 计算机科学 2019-11-28 Xin-Yu Zhang , Le Zhang , Zao-Yi Zheng , Yun Liu , Jia-Wang Bian , Ming-Ming Cheng

Motivated by applications in protein function prediction, we consider a challenging supervised classification setting in which positive labels are scarce and there are no explicit negative labels. The learning algorithm must thus select…

机器学习 · 计算机科学 2019-01-28 Marco Frasca , Nicolò Cesa-Bianchi

Loss functions and sample mining strategies are essential components in deep metric learning algorithms. However, the existing loss function or mining strategy often necessitate the incorporation of additional hyperparameters, notably the…

多媒体 · 计算机科学 2024-05-01 Xiruo Jiang , Yazhou Yao , Sheng Liu , Fumin Shen , Liqiang Nie , Xiansheng Hua

Previous studies dominantly target at self-supervised learning on real-valued networks and have achieved many promising results. However, on the more challenging binary neural networks (BNNs), this task has not yet been fully explored in…

计算机视觉与模式识别 · 计算机科学 2021-06-22 Zhiqiang Shen , Zechun Liu , Jie Qin , Lei Huang , Kwang-Ting Cheng , Marios Savvides

Recently, contrastive learning has achieved great results in self-supervised learning, where the main idea is to push two augmentations of an image (positive pairs) closer compared to other random images (negative pairs). We argue that not…

计算机视觉与模式识别 · 计算机科学 2021-09-13 Ajinkya Tejankar , Soroush Abbasi Koohpayegani , Vipin Pillai , Paolo Favaro , Hamed Pirsiavash

Deep neural networks trained with standard cross-entropy loss are more prone to memorize noisy labels, which degrades their performance. Negative learning using complementary labels is more robust when noisy labels intervene but with an…

机器学习 · 计算机科学 2022-09-07 Chen-Chen Zong , Zheng-Tao Cao , Hong-Tao Guo , Yun Du , Ming-Kun Xie , Shao-Yuan Li , Sheng-Jun Huang

Contrastive deep graph clustering, which aims to divide nodes into disjoint groups via contrastive mechanisms, is a challenging research spot. Among the recent works, hard sample mining-based algorithms have achieved great attention for…

机器学习 · 计算机科学 2023-01-31 Yue Liu , Xihong Yang , Sihang Zhou , Xinwang Liu , Zhen Wang , Ke Liang , Wenxuan Tu , Liang Li , Jingcan Duan , Cancan Chen

Deep metric learning aims to learn a deep embedding that can capture the semantic similarity of data points. Given the availability of massive training samples, deep metric learning is known to suffer from slow convergence due to a large…

机器学习 · 计算机科学 2019-12-05 Xinshao Wang , Yang Hua , Elyor Kodirov , Guosheng Hu , Neil M. Robertson

Learning with noisy labels has gained increasing attention because the inevitable imperfect labels in real-world scenarios can substantially hurt the deep model performance. Recent studies tend to regard low-loss samples as clean ones and…

机器学习 · 计算机科学 2024-02-20 Huafeng Liu , Mengmeng Sheng , Zeren Sun , Yazhou Yao , Xian-Sheng Hua , Heng-Tao Shen

Supervised contrastive learning has achieved remarkable success by leveraging label information; however, determining positive samples in multi-label scenarios remains a critical challenge. In multi-label supervised contrastive learning…

机器学习 · 计算机科学 2025-09-30 Guangming Huang , Yunfei Long , Cunjin Luo
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