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Contrastive learning (CL) methods effectively learn data representations in a self-supervision manner, where the encoder contrasts each positive sample over multiple negative samples via a one-vs-many softmax cross-entropy loss. By…

Machine Learning · Computer Science 2023-08-16 Huangjie Zheng , Xu Chen , Jiangchao Yao , Hongxia Yang , Chunyuan Li , Ya Zhang , Hao Zhang , Ivor Tsang , Jingren Zhou , Mingyuan Zhou

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

Unsupervised disentangled representation learning is a long-standing problem in computer vision. This work proposes a novel framework for performing image clustering from deep embeddings by combining instance-level contrastive learning with…

Machine Learning · Computer Science 2021-10-05 Ramakrishnan Sundareswaran , Jansel Herrera-Gerena , John Just , Ali Jannesari

Recently, self-supervised learning has attracted attention due to its remarkable ability to acquire meaningful representations for classification tasks without using semantic labels. This paper introduces a self-supervised learning…

Computer Vision and Pattern Recognition · Computer Science 2022-02-09 Hyungtae Lee , Heesung Kwon

Event Coreference Resolution (ECR) as a pairwise mention classification task is expensive both for automated systems and manual annotations. The task's quadratic difficulty is exacerbated when using Large Language Models (LLMs), making…

Computation and Language · Computer Science 2024-04-16 Shafiuddin Rehan Ahmed , George Arthur Baker , Evi Judge , Michael Regan , Kristin Wright-Bettner , Martha Palmer , James H. Martin

Unsupervised image complexity representation often suffers from bias in positive sample selection and sensitivity to image content. We propose CLICv2, a contrastive learning framework that enforces content invariance for complexity…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Shipeng Liu , Liang Zhao , Dengfeng Chen

Although BERT and its variants have reshaped the NLP landscape, it still remains unclear how best to derive sentence embeddings from such pre-trained Transformers. In this work, we propose a contrastive learning method that utilizes…

Computation and Language · Computer Science 2021-06-15 Taeuk Kim , Kang Min Yoo , Sang-goo Lee

Understanding vision and language representations of product content is vital for search and recommendation applications in e-commerce. As a backbone for online shopping platforms and inspired by the recent success in representation…

Machine Learning · Computer Science 2022-08-23 Wonyoung Shin , Jonghun Park , Taekang Woo , Yongwoo Cho , Kwangjin Oh , Hwanjun Song

Contrastive learning is a highly effective method for learning representations from unlabeled data. Recent works show that contrastive representations can transfer across domains, leading to simple state-of-the-art algorithms for…

Machine Learning · Computer Science 2022-05-25 Jeff Z. HaoChen , Colin Wei , Ananya Kumar , Tengyu Ma

Many recent approaches in contrastive learning have worked to close the gap between pretraining on iconic images like ImageNet and pretraining on complex scenes like COCO. This gap exists largely because commonly used random crop…

Computer Vision and Pattern Recognition · Computer Science 2022-08-17 Renhao Wang , Hang Zhao , Yang Gao

Contrastive learning has achieved impressive success in generation tasks to militate the "exposure bias" problem and discriminatively exploit the different quality of references. Existing works mostly focus on contrastive learning on the…

Computation and Language · Computer Science 2025-03-12 Mingzhe Li , XieXiong Lin , Xiuying Chen , Jinxiong Chang , Qishen Zhang , Feng Wang , Taifeng Wang , Zhongyi Liu , Wei Chu , Dongyan Zhao , Rui Yan

Contextual ranking models have delivered impressive performance improvements over classical models in the document ranking task. However, these highly over-parameterized models tend to be data-hungry and require large amounts of data even…

Information Retrieval · Computer Science 2022-07-08 Abhijit Anand , Jurek Leonhardt , Koustav Rudra , Avishek Anand

Prior work has proposed effective methods to learn event representations that can capture syntactic and semantic information over text corpus, demonstrating their effectiveness for downstream tasks such as script event prediction. On the…

Artificial Intelligence · Computer Science 2020-06-25 Xiao Ding , Kuo Liao , Ting Liu , Zhongyang Li , Junwen Duan

Selecting an appropriate response from many candidates given the utterances in a multi-turn dialogue is the key problem for a retrieval-based dialogue system. Existing work formalizes the task as matching between the utterances and a…

Computation and Language · Computer Science 2022-03-03 Wentao Zhang , Shuang Xu , Haoran Huang

The unique characteristics of text data make classification tasks a complex problem. Advances in unsupervised and semi-supervised learning and autoencoder architectures addressed several challenges. However, they still struggle with…

Computation and Language · Computer Science 2024-10-30 Grigorii Khvatskii , Nuno Moniz , Khoa Doan , Nitesh V Chawla

Representation learning is a fundamental aspect of modern artificial intelligence, driving substantial improvements across diverse applications. While selfsupervised contrastive learning has led to significant advancements in fields like…

Machine Learning · Computer Science 2024-11-19 Suiyao Chen , Jing Wu , Yunxiao Wang , Cheng Ji , Tianpei Xie , Daniel Cociorva , Michael Sharps , Cecile Levasseur , Hakan Brunzell

Contrastive learning is a powerful framework for learning self-supervised representations that generalize well to downstream supervised tasks. We show that multiple existing contrastive learning methods can be reinterpreted as learning…

Machine Learning · Computer Science 2023-02-16 Daniel D. Johnson , Ayoub El Hanchi , Chris J. Maddison

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…

Cross-lingual Named Entity Recognition (NER) has recently become a research hotspot because it can alleviate the data-hungry problem for low-resource languages. However, few researches have focused on the scenario where the source-language…

Computation and Language · Computer Science 2022-04-05 Yingwen Fu , Nankai Lin , Ziyu Yang , Shengyi Jiang

Learning by contrasting positive and negative samples is a general strategy adopted by many methods. Noise contrastive estimation (NCE) for word embeddings and translating embeddings for knowledge graphs are examples in NLP employing this…

Computation and Language · Computer Science 2018-08-06 Avishek Joey Bose , Huan Ling , Yanshuai Cao
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