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Contrastive learning based on instance discrimination trains model to discriminate different transformations of the anchor sample from other samples, which does not consider the semantic similarity among samples. This paper proposes a new…

计算机视觉与模式识别 · 计算机科学 2021-10-19 Hao Li , Xiaopeng Zhang , Hongkai Xiong

Sign language recognition (SLR) is a machine learning task aiming to identify signs in videos. Due to the scarcity of annotated data, unsupervised methods like contrastive learning have become promising in this field. They learn meaningful…

计算机视觉与模式识别 · 计算机科学 2026-03-09 Ariel Basso Madjoukeng , Jérôme Fink , Pierre Poitier , Edith Belise Kenmogne , Benoit Frenay

Sentence Representation Learning (SRL) is a crucial task in Natural Language Processing (NLP), where contrastive Self-Supervised Learning (SSL) is currently a mainstream approach. However, the reasons behind its remarkable effectiveness…

计算与语言 · 计算机科学 2024-06-06 Mingxin Li , Richong Zhang , Zhijie Nie

We consider the problem of semi-supervised 3D action recognition which has been rarely explored before. Its major challenge lies in how to effectively learn motion representations from unlabeled data. Self-supervised learning (SSL) has been…

计算机视觉与模式识别 · 计算机科学 2020-07-14 Chenyang Si , Xuecheng Nie , Wei Wang , Liang Wang , Tieniu Tan , Jiashi Feng

Contrastive methods have led a recent surge in the performance of self-supervised representation learning (SSL). Recent methods like BYOL or SimSiam purportedly distill these contrastive methods down to their essence, removing bells and…

机器学习 · 计算机科学 2022-11-03 Alexander C. Li , Alexei A. Efros , Deepak Pathak

Unsupervised learning algorithms are beginning to achieve accuracies comparable to their supervised counterparts on benchmark computer vision tasks, but their utility for practical applications has not yet been demonstrated. In this work,…

计算机视觉与模式识别 · 计算机科学 2022-01-13 Jeremiah W. Johnson , Swathi Hari , Donald Hampton , Hyunju K. Connor , Amy Keesee

Self-supervised learning (SSL) is a method that learns the data representation by utilizing supervision inherent in the data. This learning method is in the spotlight in the drug field, lacking annotated data due to time-consuming and…

生物大分子 · 定量生物学 2022-08-19 Kisung Moon , Sunyoung Kwon

Improving generalization is a major challenge in audio classification due to labeled data scarcity. Self-supervised learning (SSL) methods tackle this by leveraging unlabeled data to learn useful features for downstream classification…

音频与语音处理 · 电气工程与系统科学 2021-12-22 Melikasadat Emami , Dung Tran , Kazuhito Koishida

This paper introduces a semi-supervised contrastive learning framework and its application to text-independent speaker verification. The proposed framework employs generalized contrastive loss (GCL). GCL unifies losses from two different…

音频与语音处理 · 电气工程与系统科学 2020-06-09 Nakamasa Inoue , Keita Goto

Unsupervised clustering aims at discovering the semantic categories of data according to some distance measured in the representation space. However, different categories often overlap with each other in the representation space at the…

Contrastive learning has gained significant attention in short text clustering, yet it has an inherent drawback of mistakenly identifying samples from the same category as negatives and then separating them in the feature space (false…

机器学习 · 计算机科学 2026-03-16 Zhihao Yao

Unsupervised visual representation learning has gained much attention from the computer vision community because of the recent achievement of contrastive learning. Most of the existing contrastive learning frameworks adopt the instance…

计算机视觉与模式识别 · 计算机科学 2021-10-12 Mingkai Zheng , Fei Wang , Shan You , Chen Qian , Changshui Zhang , Xiaogang Wang , Chang Xu

Personalized search plays a crucial role in improving user search experience owing to its ability to build user profiles based on historical behaviors. Previous studies have made great progress in extracting personal signals from the query…

信息检索 · 计算机科学 2021-11-25 Yujia Zhou , Zhicheng Dou , Yutao Zhu , Ji-Rong Wen

The recent advances in representation learning inspire us to take on the challenging problem of unsupervised image classification tasks in a principled way. We propose ContraCluster, an unsupervised image classification method that combines…

计算机视觉与模式识别 · 计算机科学 2023-04-20 Seongho Joe , Byoungjip Kim , Hoyoung Kang , Kyoungwon Park , Bogun Kim , Jaeseon Park , Joonseok Lee , Youngjune Gwon

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

Despite exciting progress in causal language models, the expressiveness of the representations is largely limited due to poor discrimination ability. To remedy this issue, we present ContraCLM, a novel contrastive learning framework at both…

Contrastive pretraining is well-known to improve downstream task performance and model generalisation, especially in limited label settings. However, it is sensitive to the choice of augmentation pipeline. Positive pairs should preserve…

计算机视觉与模式识别 · 计算机科学 2025-06-17 Melanie Roschewitz , Fabio De Sousa Ribeiro , Tian Xia , Galvin Khara , Ben Glocker

Currently, learning better unsupervised sentence representations is the pursuit of many natural language processing communities. Lots of approaches based on pre-trained language models (PLMs) and contrastive learning have achieved promising…

计算与语言 · 计算机科学 2023-05-11 Nuo Chen , Linjun Shou , Ming Gong , Jian Pei , Bowen Cao , Jianhui Chang , Daxin Jiang , Jia Li

Adversarial training (AT) for robust representation learning and self-supervised learning (SSL) for unsupervised representation learning are two active research fields. Integrating AT into SSL, multiple prior works have accomplished a…

计算机视觉与模式识别 · 计算机科学 2022-07-25 Chaoning Zhang , Kang Zhang , Chenshuang Zhang , Axi Niu , Jiu Feng , Chang D. Yoo , In So Kweon

Self-supervised learning (SSL) excels at finding general-purpose latent representations from complex data, yet lacks a unifying theoretical framework that explains the diverse existing methods and guides the design of new ones. We cast SSL…

机器学习 · 计算机科学 2026-05-28 Fabian A Mikulasch , Friedemann Zenke