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Large language models (LLMs) have emerged as powerful general-purpose interfaces for many machine learning problems. Recent work has adapted LLMs to generative visual tasks like image captioning, visual question answering, and visual chat,…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Piotr Teterwak , Ximeng Sun , Bryan A. Plummer , Kate Saenko , Ser-Nam Lim

Unsupervised feature learning has made great strides with contrastive learning based on instance discrimination and invariant mapping, as benchmarked on curated class-balanced datasets. However, natural data could be highly correlated and…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Xudong Wang , Ziwei Liu , Stella X. Yu

Improving sample efficiency is a key research problem in reinforcement learning (RL), and CURL, which uses contrastive learning to extract high-level features from raw pixels of individual video frames, is an efficient…

Machine Learning · Computer Science 2020-10-16 Jinhua Zhu , Yingce Xia , Lijun Wu , Jiajun Deng , Wengang Zhou , Tao Qin , Houqiang Li

This paper is concerned with contrastive learning (CL) for low-level image restoration and enhancement tasks. We propose a new label-efficient learning paradigm based on residuals, residual contrastive learning (RCL), and derive an…

Computer Vision and Pattern Recognition · Computer Science 2022-04-28 Nanqing Dong , Matteo Maggioni , Yongxin Yang , Eduardo Pérez-Pellitero , Ales Leonardis , Steven McDonagh

Contrastive Learning (CL) has been proved to be a powerful self-supervised approach for a wide range of domains, including computer vision and graph representation learning. However, the incremental learning issue of CL has rarely been…

Machine Learning · Computer Science 2023-01-31 Cheng Ji , Jianxin Li , Hao Peng , Jia Wu , Xingcheng Fu , Qingyun Sun , Phillip S. Yu

Contrastive learning is one of the fastest growing research areas in machine learning due to its ability to learn useful representations without labeled data. However, contrastive learning is susceptible to feature suppression, i.e., it may…

Machine Learning · Computer Science 2021-11-30 Tianhong Li , Lijie Fan , Yuan Yuan , Hao He , Yonglong Tian , Rogerio Feris , Piotr Indyk , Dina Katabi

Many Click-Through Rate (CTR) prediction works focused on designing advanced architectures to model complex feature interactions but neglected the importance of feature representation learning, e.g., adopting a plain embedding layer for…

Information Retrieval · Computer Science 2022-12-02 Fangye Wang , Yingxu Wang , Dongsheng Li , Hansu Gu , Tun Lu , Peng Zhang , Ning Gu

Self-Supervised Contrastive Learning has proven effective in deriving high-quality representations from unlabeled data. However, a major challenge that hinders both unimodal and multimodal contrastive learning is feature suppression, a…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Jihai Zhang , Xiang Lan , Xiaoye Qu , Yu Cheng , Mengling Feng , Bryan Hooi

This work aims to adapt large-scale pre-trained vision-language models, such as contrastive language-image pretraining (CLIP), to enhance the performance of object reidentification (Re-ID) across various supervision settings. Although…

Computer Vision and Pattern Recognition · Computer Science 2026-01-15 Jiachen Li , Xiaojin Gong

Contrastive instance discrimination methods outperform supervised learning in downstream tasks such as image classification and object detection. However, these methods rely heavily on data augmentation during representation learning, which…

Computer Vision and Pattern Recognition · Computer Science 2025-04-21 Mohammad Alkhalefi , Georgios Leontidis , Mingjun Zhong

Contrastive learning (CL) can learn generalizable feature representations and achieve the state-of-the-art performance of downstream tasks by finetuning a linear classifier on top of it. However, as adversarial robustness becomes vital in…

Computer Vision and Pattern Recognition · Computer Science 2021-11-02 Lijie Fan , Sijia Liu , Pin-Yu Chen , Gaoyuan Zhang , Chuang Gan

Contrastive learning (CL) has become a powerful approach for learning representations from unlabeled images. However, existing CL methods focus predominantly on visual appearance features while neglecting topological characteristics (e.g.,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Guangyu Meng , Pengfei Gu , Peixian Liang , John P. Lalor , Erin Wolf Chambers , Danny Z. Chen

Self-supervised learning algorithms based on instance discrimination train encoders to be invariant to pre-defined transformations of the same instance. While most methods treat different views of the same image as positives for a…

Computer Vision and Pattern Recognition · Computer Science 2021-10-08 Debidatta Dwibedi , Yusuf Aytar , Jonathan Tompson , Pierre Sermanet , Andrew Zisserman

Contrastive self-supervised learning has outperformed supervised pretraining on many downstream tasks like segmentation and object detection. However, current methods are still primarily applied to curated datasets like ImageNet. In this…

Computer Vision and Pattern Recognition · Computer Science 2021-12-15 Wouter Van Gansbeke , Simon Vandenhende , Stamatios Georgoulis , Luc Van Gool

Contrastive image-text models such as CLIP form the building blocks of many state-of-the-art systems. While they excel at recognizing common generic concepts, they still struggle on fine-grained entities which are rare, or even absent from…

Computer Vision and Pattern Recognition · Computer Science 2024-02-22 Ahmet Iscen , Mathilde Caron , Alireza Fathi , Cordelia Schmid

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…

Computation and Language · Computer Science 2023-06-01 Wenxuan Zhou , Sheng Zhang , Tristan Naumann , Muhao Chen , Hoifung Poon

Recently, contrastive learning (CL) has emerged as a successful method for unsupervised graph representation learning. Most graph CL methods first perform stochastic augmentation on the input graph to obtain two graph views and maximize the…

Machine Learning · Computer Science 2021-03-01 Yanqiao Zhu , Yichen Xu , Feng Yu , Qiang Liu , Shu Wu , Liang Wang

Contrastive learning, a dominant self-supervised technique, emphasizes similarity in representations between augmentations of the same input and dissimilarity for different ones. Although low contrastive loss often correlates with high…

Machine Learning · Computer Science 2023-11-22 Yunzhe Zhang , Yao Lu , Qi Xuan

Aligning image and text encoders from scratch using contrastive learning requires large amounts of paired image-text data. We alleviate this need by aligning individually pre-trained language and vision representation models using a much…

Computer Vision and Pattern Recognition · Computer Science 2022-08-01 Tejas Srinivasan , Xiang Ren , Jesse Thomason

Few-Shot learning aims to train and optimize a model that can adapt to unseen visual classes with only a few labeled examples. The existing few-shot learning (FSL) methods, heavily rely only on visual data, thus fail to capture the semantic…

Computer Vision and Pattern Recognition · Computer Science 2022-10-21 Mohamed Afham , Ranga Rodrigo