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Collecting labeled data for the task of semantic segmentation is expensive and time-consuming, as it requires dense pixel-level annotations. While recent Convolutional Neural Network (CNN) based semantic segmentation approaches have…

Computer Vision and Pattern Recognition · Computer Science 2021-08-20 Xiangyun Zhao , Raviteja Vemulapalli , Philip Mansfield , Boqing Gong , Bradley Green , Lior Shapira , Ying Wu

As a successful approach to self-supervised learning, contrastive learning aims to learn invariant information shared among distortions of the input sample. While contrastive learning has yielded continuous advancements in sampling strategy…

Machine Learning · Computer Science 2023-08-11 Jiangmeng Li , Wenwen Qiang , Yanan Zhang , Wenyi Mo , Changwen Zheng , Bing Su , Hui Xiong

Self-supervised contrastive learning is an effective approach for addressing the challenge of limited labelled data. This study builds upon the previously established two-stage patch-level, multi-label classification method for…

Computer Vision and Pattern Recognition · Computer Science 2026-02-09 Salma Haidar , José Oramas

Contrastive learning is a well-established paradigm in representation learning. The standard framework of contrastive learning minimizes the distance between "similar" instances and maximizes the distance between dissimilar ones in the…

Machine Learning · Computer Science 2025-02-06 Naghmeh Ghanooni , Barbod Pajoum , Harshit Rawal , Sophie Fellenz , Vo Nguyen Le Duy , Marius Kloft

In standard supervised machine learning, it is necessary to provide a label for every input in the data. While raw data in many application domains is easily obtainable on the Internet, manual labelling of this data is prohibitively…

Machine Learning · Computer Science 2023-09-07 Konstantinos Christopher Tsiolis

Learning semantic-rich representations from raw unlabeled time series data is critical for downstream tasks such as classification and forecasting. Contrastive learning has recently shown its promising representation learning capability in…

Machine Learning · Computer Science 2023-03-31 Qianwen Meng , Hangwei Qian , Yong Liu , Lizhen Cui , Yonghui Xu , Zhiqi Shen

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…

Computer Vision and Pattern Recognition · Computer Science 2023-02-16 Yuanpeng Tu , Boshen Zhang , Yuxi Li , Liang Liu , Jian Li , Jiangning Zhang , Yabiao Wang , Chengjie Wang , Cai Rong Zhao

The major paradigm of applying a pre-trained language model to downstream tasks is to fine-tune it on labeled task data, which often suffers instability and low performance when the labeled examples are scarce.~One way to alleviate this…

Computation and Language · Computer Science 2021-06-07 Ruikun Luo , Guanhuan Huang , Xiaojun Quan

Fine-tuning a pre-trained language model via the contrastive learning framework with a large amount of unlabeled sentences or labeled sentence pairs is a common way to obtain high-quality sentence representations. Although the contrastive…

Computation and Language · Computer Science 2022-11-01 Tianduo Wang , Wei Lu

While some powerful neural network architectures (e.g., Transformer, Graph Neural Networks) have achieved improved performance in sequential recommendation with high-order item dependency modeling, they may suffer from poor representation…

Information Retrieval · Computer Science 2023-06-02 Yaowen Ye , Lianghao Xia , Chao Huang

Learning multi-label image recognition with incomplete annotation is gaining popularity due to its superior performance and significant labor savings when compared to training with fully labeled datasets. Existing literature mainly focuses…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Cheng Chen , Yifan Zhao , Jia Li

The discriminability of feature representation is the key to open-set face recognition. Previous methods rely on the learnable weights of the classification layer that represent the identities. However, the evaluation process learns no…

Computer Vision and Pattern Recognition · Computer Science 2023-04-25 Youzhe Song , Feng Wang

Most of previous deepfake detection researches bent their efforts to describe and discriminate artifacts in human perceptible ways, which leave a bias in the learned networks of ignoring some critical invariance features intra-class and…

Computer Vision and Pattern Recognition · Computer Science 2022-05-17 Ruiqi Zha , Zhichao Lian , Qianmu Li , Siqi Gu

To improve performance in visual feature representation from photos or videos for practical applications, we generally require large-scale human-annotated labeled data while training deep neural networks. However, the cost of gathering and…

Computer Vision and Pattern Recognition · Computer Science 2022-10-10 Zhenyuan Lu

The lack of labeled data is a key challenge for learning useful representation from time series data. However, an unsupervised representation framework that is capable of producing high quality representations could be of great value. It is…

Machine Learning · Statistics 2022-03-18 Kristoffer Wickstrøm , Michael Kampffmeyer , Karl Øyvind Mikalsen , Robert Jenssen

Reliable detection of anomalies is crucial when deploying machine learning models in practice, but remains challenging due to the lack of labeled data. To tackle this challenge, contrastive learning approaches are becoming increasingly…

Computer Vision and Pattern Recognition · Computer Science 2021-07-19 Puck de Haan , Sindy Löwe

Deep learning with noisy labels is an interesting challenge in weakly supervised learning. Despite their significant learning capacity, CNNs have a tendency to overfit in the presence of samples with noisy labels. Alleviating this issue,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-06 Yan Han , Soumava Kumar Roy , Mehrtash Harandi , Lars Petersson

Masked image modelling (e.g., Masked AutoEncoder) and contrastive learning (e.g., Momentum Contrast) have shown impressive performance on unsupervised visual representation learning. This work presents Masked Contrastive Representation…

Computer Vision and Pattern Recognition · Computer Science 2022-11-14 Yuchong Yao , Nandakishor Desai , Marimuthu Palaniswami

The success of deep learning is usually accompanied by the growth in neural network depth. However, the traditional training method only supervises the neural network at its last layer and propagates the supervision layer-by-layer, which…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Linfeng Zhang , Xin Chen , Junbo Zhang , Runpei Dong , Kaisheng Ma

Contrastive learning has achieved remarkable success in learning effective representations, with supervised contrastive learning often outperforming self-supervised approaches. However, in real-world scenarios, data annotations are often…

Machine Learning · Computer Science 2025-05-29 Zi-Hao Zhou , Jun-Jie Wang , Tong Wei , Min-Ling Zhang