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Self-supervised representation learning targets to learn convnet-based image representations from unlabeled data. Inspired by the success of NLP methods in this area, in this work we propose a self-supervised approach based on spatially…

Computer Vision and Pattern Recognition · Computer Science 2020-02-28 Spyros Gidaris , Andrei Bursuc , Nikos Komodakis , Patrick Pérez , Matthieu Cord

Self-supervised learning aims to learn representations from the data itself without explicit manual supervision. Existing efforts ignore a crucial aspect of self-supervised learning - the ability to scale to large amount of data because…

Computer Vision and Pattern Recognition · Computer Science 2019-06-07 Priya Goyal , Dhruv Mahajan , Abhinav Gupta , Ishan Misra

Articulated objects exist widely in the real world. However, previous 3D generative methods for unsupervised part decomposition are unsuitable for such objects, because they assume a spatially fixed part location, resulting in inconsistent…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Yuki Kawana , Yusuke Mukuta , Tatsuya Harada

The success of deep learning based models for computer vision applications requires large scale human annotated data which are often expensive to generate. Self-supervised learning, a subset of unsupervised learning, handles this problem by…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Siladittya Manna , Saumik Bhattacharya , Umapada Pal

Human perception is structured around objects which form the basis for our higher-level cognition and impressive systematic generalization abilities. Yet most work on representation learning focuses on feature learning without even…

While contrastive learning is proven to be an effective training strategy in computer vision, Natural Language Processing (NLP) is only recently adopting it as a self-supervised alternative to Masked Language Modeling (MLM) for improving…

Computation and Language · Computer Science 2021-09-16 Hooman Sedghamiz , Shivam Raval , Enrico Santus , Tuka Alhanai , Mohammad Ghassemi

The need for a large amount of labeled data in the supervised setting has led recent studies to utilize self-supervised learning to pre-train deep neural networks using unlabeled data. Many self-supervised training strategies have been…

Computer Vision and Pattern Recognition · Computer Science 2022-04-06 Mojtaba Bahrami , Mahsa Ghorbani , Nassir Navab

Time-series representation learning can extract representations from data with temporal dynamics and sparse labels. When labeled data are sparse but unlabeled data are abundant, contrastive learning, i.e., a framework to learn a latent…

Machine Learning · Computer Science 2023-03-03 Heejeong Choi , Pilsung Kang

The unsupervised pretraining of object detectors has recently become a key component of object detector training, as it leads to improved performance and faster convergence during the supervised fine-tuning stage. Existing unsupervised…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Ioannis Maniadis Metaxas , Adrian Bulat , Ioannis Patras , Brais Martinez , Georgios Tzimiropoulos

Patch-level image representation is very important for object classification and detection, since it is robust to spatial transformation, scale variation, and cluttered background. Many existing methods usually require fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2017-05-09 Peng Tang , Xinggang Wang , Zilong Huang , Xiang Bai , Wenyu Liu

The self-supervised contrastive learning strategy has attracted considerable attention due to its exceptional ability in representation learning. However, current contrastive learning tends to learn global coarse-grained representations of…

Computer Vision and Pattern Recognition · Computer Science 2025-10-09 Jialu Shi , Zhiqiang Wei , Jie Nie , Lei Huang

Video Question Answering (Video QA) requires fine-grained understanding of both video and language modalities to answer the given questions. In this paper, we propose novel training schemes for multiple-choice video question answering with…

Computation and Language · Computer Science 2020-12-15 Seonhoon Kim , Seohyeong Jeong , Eunbyul Kim , Inho Kang , Nojun Kwak

Part-based image classification aims at representing categories by small sets of learned discriminative parts, upon which an image representation is built. Considered as a promising avenue a decade ago, this direction has been neglected…

Computer Vision and Pattern Recognition · Computer Science 2017-04-13 Ronan Sicre , Yannis Avrithis , Ewa Kijak , Frederic Jurie

Semi-Supervised Semantic Segmentation (S4) aims to train a segmentation model with limited labeled images and a substantial volume of unlabeled images. To improve the robustness of representations, powerful methods introduce a pixel-wise…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Changqi Wang , Haoyu Xie , Yuhui Yuan , Chong Fu , Xiangyu Yue

Self-supervised 3D representation learning aims to learn effective representations from large-scale unlabeled point clouds. Most existing approaches adopt point discrimination as the pretext task, which assigns matched points in two…

Computer Vision and Pattern Recognition · Computer Science 2024-03-15 Chengyao Wang , Li Jiang , Xiaoyang Wu , Zhuotao Tian , Bohao Peng , Hengshuang Zhao , Jiaya Jia

Unsupervised pre-training aims at learning transferable features that are beneficial for downstream tasks. However, most state-of-the-art unsupervised methods concentrate on learning global representations for image-level classification…

Computer Vision and Pattern Recognition · Computer Science 2022-04-12 Jian Ding , Enze Xie , Hang Xu , Chenhan Jiang , Zhenguo Li , Ping Luo , Gui-Song Xia

Various state-of-the-art self-supervised visual representation learning approaches take advantage of data from multiple sensors by aligning the feature representations across views and/or modalities. In this work, we investigate how…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 Thomas M. Hehn , Julian F. P. Kooij , Dariu M. Gavrila

Cross entropy loss has served as the main objective function for classification-based tasks. Widely deployed for learning neural network classifiers, it shows both effectiveness and a probabilistic interpretation. Recently, after the…

Computer Vision and Pattern Recognition · Computer Science 2022-11-08 Rahaf Aljundi , Yash Patel , Milan Sulc , Daniel Olmeda , Nikolay Chumerin

As a subset of unsupervised representation learning, self-supervised representation learning adopts self-defined signals as supervision and uses the learned representation for downstream tasks, such as object detection and image captioning.…

Machine Learning · Computer Science 2021-03-24 Yao-Hung Hubert Tsai , Yue Wu , Ruslan Salakhutdinov , Louis-Philippe Morency

Unsupervised visual representation learning remains a largely unsolved problem in computer vision research. Among a big body of recently proposed approaches for unsupervised learning of visual representations, a class of self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2019-01-28 Alexander Kolesnikov , Xiaohua Zhai , Lucas Beyer
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