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This paper presents a framework for learning visual representations from unlabeled video demonstrations captured from multiple viewpoints. We show that these representations are applicable for imitating several robotic tasks, including pick…

计算机视觉与模式识别 · 计算机科学 2023-01-30 André Correia , Luís A. Alexandre

Contrastive learning has become a fundamental approach in both uni-modal and multi-modal frameworks. This learning paradigm pulls positive pairs of samples closer while pushing negatives apart. In the uni-modal setting (e.g., image-based…

计算机视觉与模式识别 · 计算机科学 2026-03-10 Siarhei Sheludzko , Dhimitrios Duka , Bernt Schiele , Hilde Kuehne , Anna Kukleva

We present modality gap, an intriguing geometric phenomenon of the representation space of multi-modal models. Specifically, we show that different data modalities (e.g. images and text) are embedded at arm's length in their shared…

计算与语言 · 计算机科学 2022-10-21 Weixin Liang , Yuhui Zhang , Yongchan Kwon , Serena Yeung , James Zou

In the image domain, excellent representations can be learned by inducing invariance to content-preserving transformations via noise contrastive learning. In this paper, we generalize contrastive learning to a wider set of transformations,…

计算机视觉与模式识别 · 计算机科学 2021-10-28 Mandela Patrick , Yuki M. Asano , Polina Kuznetsova , Ruth Fong , João F. Henriques , Geoffrey Zweig , Andrea Vedaldi

Self-supervised learning of deep neural networks has become a prevalent paradigm for learning representations that transfer to a variety of downstream tasks. Similar to proposed models of the ventral stream of biological vision, it is…

机器学习 · 计算机科学 2023-06-26 Kion Fallah , Alec Helbling , Kyle A. Johnsen , Christopher J. Rozell

Contrastive loss has been increasingly used in learning representations from multiple modalities. In the limit, the nature of the contrastive loss encourages modalities to exactly match each other in the latent space. Yet it remains an open…

机器学习 · 计算机科学 2023-03-13 Qian Jiang , Changyou Chen , Han Zhao , Liqun Chen , Qing Ping , Son Dinh Tran , Yi Xu , Belinda Zeng , Trishul Chilimbi

Collaborative learning enables distributed clients to learn a shared model for prediction while keeping the training data local on each client. However, existing collaborative learning methods require fully-labeled data for training, which…

机器学习 · 计算机科学 2022-04-26 Yawen Wu , Zhepeng Wang , Dewen Zeng , Meng Li , Yiyu Shi , Jingtong Hu

Multi-modal generative AI systems, such as those combining vision and language, rely on contrastive pre-training to learn representations across different modalities. While their practical benefits are widely acknowledged, a rigorous…

机器学习 · 计算机科学 2025-10-22 Kazusato Oko , Licong Lin , Yuhang Cai , Song Mei

Multimodal representation learning is commonly built on a shared-private decomposition, treating latent information as either common to all modalities or specific to one. This binary view is often inadequate: many factors are shared by only…

机器学习 · 统计学 2026-04-08 Huichao Li , Junhan Yu , Doudou Zhou

Learning good image representations that are beneficial to downstream tasks is a challenging task in computer vision. As such, a wide variety of self-supervised learning approaches have been proposed. Among them, contrastive learning has…

计算机视觉与模式识别 · 计算机科学 2023-02-06 Yun Yue , Fangzhou Lin , Kazunori D Yamada , Ziming Zhang

We study self-supervised learning on graphs using contrastive methods. A general scheme of prior methods is to optimize two-view representations of input graphs. In many studies, a single graph-level representation is computed as one of the…

机器学习 · 计算机科学 2021-07-22 Xinyi Xu , Cheng Deng , Yaochen Xie , Shuiwang Ji

Contrastive learning (CL) continuously achieves significant breakthroughs across multiple domains. However, the most common InfoNCE-based methods suffer from some dilemmas, such as \textit{uniformity-tolerance dilemma} (UTD) and…

机器学习 · 计算机科学 2023-06-13 Zizheng Huang , Haoxing Chen , Ziqi Wen , Chao Zhang , Huaxiong Li , Bo Wang , Chunlin Chen

Contrastive learning has shown remarkable results in recent self-supervised approaches for visual representation. By learning to contrast positive pairs' representation from the corresponding negatives pairs, one can train good visual…

计算机视觉与模式识别 · 计算机科学 2020-11-17 Sungnyun Kim , Gihun Lee , Sangmin Bae , Se-Young Yun

Contrastive learning has achieved great success in self-supervised visual representation learning, but existing approaches mostly ignored spatial information which is often crucial for visual representation. This paper presents…

计算机视觉与模式识别 · 计算机科学 2020-11-20 Xinyue Huo , Lingxi Xie , Longhui Wei , Xiaopeng Zhang , Hao Li , Zijie Yang , Wengang Zhou , Houqiang Li , Qi Tian

Sensory input from multiple sources is crucial for robust and coherent human perception. Different sources contribute complementary explanatory factors. Similarly, research studies often collect multimodal imaging data, each of which can…

Learning discriminative image representations plays a vital role in long-tailed image classification because it can ease the classifier learning in imbalanced cases. Given the promising performance contrastive learning has shown recently in…

计算机视觉与模式识别 · 计算机科学 2021-03-29 Peng Wang , Kai Han , Xiu-Shen Wei , Lei Zhang , Lei Wang

Deep multimodal learning has shown remarkable success by leveraging contrastive learning to capture explicit one-to-one relations across modalities. However, real-world data often exhibits shared relations beyond simple pairwise…

计算机视觉与模式识别 · 计算机科学 2025-07-01 Raja Kumar , Raghav Singhal , Pranamya Kulkarni , Deval Mehta , Kshitij Jadhav

Multimodal contrastive learning (MCL) aims to embed data from different modalities in a shared embedding space. However, empirical evidence shows that representations from different modalities occupy completely separate regions of embedding…

机器学习 · 计算机科学 2025-10-09 Lingjie Yi , Raphael Douady , Chao Chen

Many vision-related tasks benefit from reasoning over multiple modalities to leverage complementary views of data in an attempt to learn robust embedding spaces. Most deep learning-based methods rely on a late fusion technique whereby…

计算机视觉与模式识别 · 计算机科学 2020-03-04 Austin Reiter , Menglin Jia , Pu Yang , Ser-Nam Lim

Session-based recommendation aims to predict intents of anonymous users based on limited behaviors. With the ability in alleviating data sparsity, contrastive learning is prevailing in the task. However, we spot that existing contrastive…

信息检索 · 计算机科学 2025-06-06 Xiaokun Zhang , Bo Xu , Fenglong Ma , Zhizheng Wang , Liang Yang , Hongfei Lin