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Self-supervised representation learning (SSL) methods provide an effective label-free initial condition for fine-tuning downstream tasks. However, in numerous realistic scenarios, the downstream task might be biased with respect to the…

机器学习 · 计算机科学 2022-11-01 Andrius Ovsianas , Jason Ramapuram , Dan Busbridge , Eeshan Gunesh Dhekane , Russ Webb

We evaluate the effectiveness of semi-supervised learning (SSL) on a realistic benchmark where data exhibits considerable class imbalance and contains images from novel classes. Our benchmark consists of two fine-grained classification…

计算机视觉与模式识别 · 计算机科学 2021-04-02 Jong-Chyi Su , Zezhou Cheng , Subhransu Maji

Variance regularized counterfactual risk minimization (VRCRM) has been proposed as an alternative off-policy learning (OPL) method. VRCRM method uses a lower-bound on the $f$-divergence between the logging policy and the target policy as…

机器学习 · 计算机科学 2024-10-15 Hua Chang Bakker , Shashank Gupta , Harrie Oosterhuis

Semi-supervised learning (SSL) is an active area of research which aims to utilize unlabelled data in order to improve the accuracy of speech recognition systems. The current study proposes a methodology for integration of two key ideas: 1)…

计算与语言 · 计算机科学 2020-08-11 Prakhar Swarup , Debmalya Chakrabarty , Ashtosh Sapru , Hitesh Tulsiani , Harish Arsikere , Sri Garimella

Nowadays, supervised deep learning techniques yield the best state-of-the-art prediction performances for a wide variety of computer vision tasks. However, such supervised techniques generally require a large amount of manually labeled…

计算机视觉与模式识别 · 计算机科学 2020-06-09 Florent Chiaroni , Mohamed-Cherif Rahal , Nicolas Hueber , Frederic Dufaux

Self-supervised learning (SSL) has emerged as a powerful technique for learning rich representations from unlabeled data. The data representations are able to capture many underlying attributes of data, and be useful in downstream…

机器学习 · 计算机科学 2023-12-01 Weicheng Zhu , Sheng Liu , Carlos Fernandez-Granda , Narges Razavian

Self-Supervised Learning (SSL) is a paradigm that leverages unlabeled data for model training. Empirical studies show that SSL can achieve promising performance in distribution shift scenarios, where the downstream and training…

机器学习 · 计算机科学 2023-12-13 Xuyang Zhao , Tianqi Du , Yisen Wang , Jun Yao , Weiran Huang

We propose a risk-averse statistical learning framework wherein the performance of a learning algorithm is evaluated by the conditional value-at-risk (CVaR) of losses rather than the expected loss. We devise algorithms based on stochastic…

机器学习 · 计算机科学 2020-02-17 Tasuku Soma , Yuichi Yoshida

A good visual representation is an inference map from observations (images) to features (vectors) that faithfully reflects the hidden modularized generative factors (semantics). In this paper, we formulate the notion of "good"…

计算机视觉与模式识别 · 计算机科学 2021-11-01 Tan Wang , Zhongqi Yue , Jianqiang Huang , Qianru Sun , Hanwang Zhang

Self-Supervised Learning (SSL) is a valuable and robust training methodology for contemporary Deep Neural Networks (DNNs), enabling unsupervised pretraining on a 'pretext task' that does not require ground-truth labels/annotation. This…

Self-supervised learning (SSL) methods aim to learn view-invariant representations by maximizing the similarity between the features extracted from different crops of the same image regardless of cropping size and content. In essence, this…

计算机视觉与模式识别 · 计算机科学 2022-04-14 Tong Zhang , Congpei Qiu , Wei Ke , Sabine Süsstrunk , Mathieu Salzmann

We approach self-supervised learning of image representations from a statistical dependence perspective, proposing Self-Supervised Learning with the Hilbert-Schmidt Independence Criterion (SSL-HSIC). SSL-HSIC maximizes dependence between…

机器学习 · 统计学 2021-12-06 Yazhe Li , Roman Pogodin , Danica J. Sutherland , Arthur Gretton

Non-contrastive SSL methods like BYOL and SimSiam rely on asymmetric predictor networks to avoid representational collapse without negative samples. Yet, how predictor networks facilitate stable learning is not fully understood. While…

机器学习 · 计算机科学 2023-10-30 Manu Srinath Halvagal , Axel Laborieux , Friedemann Zenke

Conventional semi-supervised learning (SSL) ideally assumes that labeled and unlabeled data share an identical class distribution, however in practice, this assumption is easily violated, as unlabeled data often includes unknown class data,…

计算机视觉与模式识别 · 计算机科学 2025-06-02 Heejo Kong , Sung-Jin Kim , Gunho Jung , Seong-Whan Lee

Self-Supervised Learning (SSL) for Vision Transformers (ViTs) has recently demonstrated considerable potential as a pre-training strategy for a variety of computer vision tasks, including image classification and segmentation, both in…

计算机视觉与模式识别 · 计算机科学 2025-09-22 Yannis Kaltampanidis , Alexandros Doumanoglou , Dimitrios Zarpalas

We study semi-supervised learning (SSL) for vision transformers (ViT), an under-explored topic despite the wide adoption of the ViT architectures to different tasks. To tackle this problem, we propose a new SSL pipeline, consisting of first…

计算机视觉与模式识别 · 计算机科学 2022-08-12 Zhaowei Cai , Avinash Ravichandran , Paolo Favaro , Manchen Wang , Davide Modolo , Rahul Bhotika , Zhuowen Tu , Stefano Soatto

Visual reasoning refers to the task of solving questions about visual information. Current visual reasoning methods typically employ pre-trained vision-language model (VLM) strategies or deep neural network approaches. However, existing…

计算机视觉与模式识别 · 计算机科学 2025-09-03 Chao Wang , Chunbai Zhang , Yongxiao Tian , Yang Zhou , Yan Peng

Writer independent offline signature verification is one of the most challenging tasks in pattern recognition as there is often a scarcity of training data. To handle such data scarcity problem, in this paper, we propose a novel…

计算机视觉与模式识别 · 计算机科学 2022-07-13 Siladittya Manna , Soumitri Chattopadhyay , Saumik Bhattacharya , Umapada Pal

Contrastive Learning (CL), a leading paradigm in Self-Supervised Learning (SSL), typically relies on pairs of data views generated through augmentation. While multiple augmentations per instance (more than two) improve generalization in…

Uncertainty quantification in deep learning is crucial for safe and reliable decision-making in downstream tasks. Existing methods quantify uncertainty at the last layer or other approximations of the network which may miss some sources of…

机器学习 · 统计学 2025-04-25 James McInerney , Nathan Kallus