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Contrastive learning has been frequently investigated to learn effective representations for text clustering tasks. While existing contrastive learning-based text clustering methods only focus on modeling instance-wise semantic similarity…

计算与语言 · 计算机科学 2024-08-27 Qian Yong , Chen Chen , Xiabing Zhou

Contrastive learning is a discriminative approach that aims at grouping similar samples closer and diverse samples far from each other. It it an efficient technique to train an encoder generating distinguishable and informative…

计算机视觉与模式识别 · 计算机科学 2021-07-19 Qing Chen , Jian Zhang

Contrastive learning is a powerful self-supervised learning method, but we have a limited theoretical understanding of how it works and why it works. In this paper, we prove that contrastive learning with the standard InfoNCE loss is…

机器学习 · 计算机科学 2024-02-26 Zhiquan Tan , Yifan Zhang , Jingqin Yang , Yang Yuan

The effectiveness of contrastive learning technology in natural language processing tasks is yet to be explored and analyzed. How to construct positive and negative samples correctly and reasonably is the core challenge of contrastive…

计算与语言 · 计算机科学 2023-07-17 Nankai Lin , Guanqiu Qin , Jigang Wang , Aimin Yang , Dong Zhou

Semi-supervised learning methods have shown promising results in solving many practical problems when only a few labels are available. The existing methods assume that the class distributions of labeled and unlabeled data are equal;…

机器学习 · 计算机科学 2024-08-06 Min Gu Kwak , Hyungu Kahng , Seoung Bum Kim

Learning a discriminative semantic space using unlabelled and noisy data remains unaddressed in a multi-label setting. We present a contrastive self-supervised learning method which is robust to data noise, grounded in the domain of…

计算机视觉与模式识别 · 计算机科学 2024-05-09 Mehmet Can Yavuz , Berrin Yanikoglu

Training image-based object detectors presents formidable challenges, as it entails not only the complexities of object detection but also the added intricacies of precisely localizing objects within potentially diverse and noisy…

计算机视觉与模式识别 · 计算机科学 2024-02-22 Chandan Kumar , Jansel Herrera-Gerena , John Just , Matthew Darr , Ali Jannesari

A key requirement for the success of supervised deep learning is a large labeled dataset - a condition that is difficult to meet in medical image analysis. Self-supervised learning (SSL) can help in this regard by providing a strategy to…

计算机视觉与模式识别 · 计算机科学 2020-11-02 Krishna Chaitanya , Ertunc Erdil , Neerav Karani , Ender Konukoglu

Recently, as an effective way of learning latent representations, contrastive learning has been increasingly popular and successful in various domains. The success of constrastive learning in single-label classifications motivates us to…

计算机视觉与模式识别 · 计算机科学 2021-07-27 Son D. Dao , Ethan Zhao , Dinh Phung , Jianfei Cai

The advancement of deep learning has greatly improved supervised image classification. However, labeling data is costly, prompting research into unsupervised learning methods such as contrastive learning. In real-world scenarios, fully…

人工智能 · 计算机科学 2026-01-09 Shogo Nakayama , Masahiro Okuda

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

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…

机器学习 · 计算机科学 2023-01-31 Cheng Ji , Jianxin Li , Hao Peng , Jia Wu , Xingcheng Fu , Qingyun Sun , Phillip S. Yu

Contrastive representation learning is crucial in time series analysis as it alleviates the issue of data noise and incompleteness as well as sparsity of supervision signal. However, existing constrastive learning frameworks usually focus…

机器学习 · 计算机科学 2024-06-26 Haozhi Gao , Qianqian Ren , Jinbao Li

Unsupervised contrastive learning has gained increasing attention in the latest research and has proven to be a powerful method for learning representations from unlabeled data. However, little theoretical analysis was known for this…

机器学习 · 计算机科学 2021-06-01 Zixin Wen

Self-supervised learning has achieved a great success in the representation learning of visual and textual data. However, the current methods are mainly validated on the well-curated datasets, which do not exhibit the real-world long-tailed…

计算机视觉与模式识别 · 计算机科学 2022-07-08 Zhihan Zhou , Jiangchao Yao , Yanfeng Wang , Bo Han , Ya Zhang

To extract robust deep representations from long sequential modeling of speech data, we propose a self-supervised learning approach, namely Contrastive Separative Coding (CSC). Our key finding is to learn such representations by separating…

音频与语音处理 · 电气工程与系统科学 2021-03-02 Jun Wang , Max W. Y. Lam , Dan Su , Dong Yu

Trained classification models can unintentionally lead to biased representations and predictions, which can reinforce societal preconceptions and stereotypes. Existing debiasing methods for classification models, such as adversarial…

计算与语言 · 计算机科学 2021-09-23 Aili Shen , Xudong Han , Trevor Cohn , Timothy Baldwin , Lea Frermann

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…

计算与语言 · 计算机科学 2021-06-07 Ruikun Luo , Guanhuan Huang , Xiaojun Quan

Long-tailed semi-supervised learning poses a significant challenge in training models with limited labeled data exhibiting a long-tailed label distribution. Current state-of-the-art LTSSL approaches heavily rely on high-quality…

机器学习 · 计算机科学 2024-10-10 Zi-Hao Zhou , Siyuan Fang , Zi-Jing Zhou , Tong Wei , Yuanyu Wan , Min-Ling Zhang

With the advent of big data across multiple high-impact applications, we are often facing the challenge of complex heterogeneity. The newly collected data usually consist of multiple modalities and are characterized with multiple labels,…

机器学习 · 计算机科学 2022-07-27 Lecheng Zheng , Jinjun Xiong , Yada Zhu , Jingrui He