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Representation learning constitutes a pivotal cornerstone in contemporary deep learning paradigms, offering a conduit to elucidate distinctive features within the latent space and interpret the deep models. Nevertheless, the inherent…

Computer Vision and Pattern Recognition · Computer Science 2024-02-07 Siyuan Dai , Kai Ye , Kun Zhao , Ge Cui , Haoteng Tang , Liang Zhan

Efficiently utilizing discriminative features is crucial for convolutional neural networks to achieve remarkable performance in medical image segmentation and is also important for model generalization across multiple domains, where letting…

Computer Vision and Pattern Recognition · Computer Science 2022-05-16 Ran Gu , Jiangshan Lu , Jingyang Zhang , Wenhui Lei , Xiaofan Zhang , Guotai Wang , Shaoting Zhang

A common problem with segmentation of medical images using neural networks is the difficulty to obtain a significant number of pixel-level annotated data for training. To address this issue, we proposed a semi-supervised segmentation…

Computer Vision and Pattern Recognition · Computer Science 2023-02-23 Ange Lou , Kareem Tawfik , Xing Yao , Ziteng Liu , Jack Noble

Creating representations of shapes that are invari-ant to isometric or almost-isometric transforma-tions has long been an area of interest in shape anal-ysis, since enforcing invariance allows the learningof more effective and robust shape…

Computer Vision and Pattern Recognition · Computer Science 2021-07-09 Jeffrey Gu , Serena Yeung

How to select relevant key objects and reason about the complex relationships cross vision and linguistic domain are two key issues in many multi-modality applications such as visual question answering (VQA). In this work, we incorporate…

Computer Vision and Pattern Recognition · Computer Science 2023-11-14 Zongzhao Li , Xiangyu Zhu , Xi Zhang , Zhaoxiang Zhang , Zhen Lei

Self-supervised representation learning is a critical problem in computer vision, as it provides a way to pretrain feature extractors on large unlabeled datasets that can be used as an initialization for more efficient and effective…

Computer Vision and Pattern Recognition · Computer Science 2020-12-25 Yunze Liu , Li Yi , Shanghang Zhang , Qingnan Fan , Thomas Funkhouser , Hao Dong

Recent self-supervised contrastive learning provides an effective approach for unsupervised person re-identification (ReID) by learning invariance from different views (transformed versions) of an input. In this paper, we incorporate a…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Hao Chen , Yaohui Wang , Benoit Lagadec , Antitza Dantcheva , Francois Bremond

We propose a novel biologically-plausible solution to the credit assignment problem motivated by observations in the ventral visual pathway and trained deep neural networks. In both, representations of objects in the same category become…

Machine Learning · Computer Science 2020-12-08 Shanshan Qin , Nayantara Mudur , Cengiz Pehlevan

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…

Computer Vision and Pattern Recognition · Computer Science 2021-07-27 Son D. Dao , Ethan Zhao , Dinh Phung , Jianfei Cai

Many real-world applications involve data from multiple modalities and thus exhibit the view heterogeneity. For example, user modeling on social media might leverage both the topology of the underlying social network and the content of the…

Machine Learning · Computer Science 2021-02-16 Lecheng Zheng , Yu Cheng , Hongxia Yang , Nan Cao , Jingrui He

Contrastive learning relies on an assumption that positive pairs contain related views, e.g., patches of an image or co-occurring multimodal signals of a video, that share certain underlying information about an instance. But what if this…

Computer Vision and Pattern Recognition · Computer Science 2022-01-13 Ching-Yao Chuang , R Devon Hjelm , Xin Wang , Vibhav Vineet , Neel Joshi , Antonio Torralba , Stefanie Jegelka , Yale Song

Multiview clustering (MVC) segregates data samples into meaningful clusters by synthesizing information across multiple views. Moreover, deep learning-based methods have demonstrated their strong feature learning capabilities in MVC…

Machine Learning · Computer Science 2024-03-22 Hao Yang , Hua Mao , Wai Lok Woo , Jie Chen , Xi Peng

Unsupervised learning methods for feature extraction are becoming more and more popular. We combine the popular contrastive learning method (prototypical contrastive learning) and the classic representation learning method (autoencoder) to…

Computer Vision and Pattern Recognition · Computer Science 2022-05-11 Zeyu Cao , Xiaorun Li , Liaoying Zhao

Recent progress in contrastive learning has revolutionized unsupervised representation learning. Concretely, multiple views (augmentations) from the same image are encouraged to map to the similar embeddings, while views from different…

Computer Vision and Pattern Recognition · Computer Science 2021-01-20 Nanxuan Zhao , Zhirong Wu , Rynson W. H. Lau , Stephen Lin

Contrastive learning between different views of the data achieves outstanding success in the field of self-supervised representation learning and the learned representations are useful in broad downstream tasks. Since all supervision…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Haoqing Wang , Xun Guo , Zhi-Hong Deng , Yan Lu

Pursuing realistic results according to human visual perception is the central concern in the image transformation tasks. Perceptual learning approaches like perceptual loss are empirically powerful for such tasks but they usually rely on…

Computer Vision and Pattern Recognition · Computer Science 2020-06-25 Kangfu Mei , Yao Lu , Qiaosi Yi , Haoyu Wu , Juncheng Li , Rui Huang

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…

Computer Vision and Pattern Recognition · Computer Science 2023-01-30 André Correia , Luís A. Alexandre

A prominent technique for self-supervised representation learning has been to contrast semantically similar and dissimilar pairs of samples. Without access to labels, dissimilar (negative) points are typically taken to be randomly sampled…

Machine Learning · Computer Science 2020-10-22 Ching-Yao Chuang , Joshua Robinson , Lin Yen-Chen , Antonio Torralba , Stefanie Jegelka

Contrastive learning is a powerful way of learning multimodal representations across various domains such as image-caption retrieval and audio-visual representation learning. In this work, we investigate if these findings generalize to the…

Information Retrieval · Computer Science 2023-09-04 Karel Veldkamp , Mariya Hendriksen , Zoltán Szlávik , Alexander Keijser

Learning scientific document representations can be substantially improved through contrastive learning objectives, where the challenge lies in creating positive and negative training samples that encode the desired similarity semantics.…

Computation and Language · Computer Science 2022-10-20 Malte Ostendorff , Nils Rethmeier , Isabelle Augenstein , Bela Gipp , Georg Rehm