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We present a novel unsupervised framework for instance-level image-to-image translation. Although recent advances have been made by incorporating additional object annotations, existing methods often fail to handle images with multiple…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Somi Jeong , Youngjung Kim , Eungbean Lee , Kwanghoon Sohn

The field of image classification has shown an outstanding success thanks to the development of deep learning techniques. Despite the great performance obtained, most of the work has focused on natural images ignoring other domains like…

Computer Vision and Pattern Recognition · Computer Science 2019-02-07 Manuel Lagunas , Elena Garces

Transfer learning has become a standard practice to mitigate the lack of labeled data in medical classification tasks. Whereas finetuning a downstream task using supervised ImageNet pretrained features is straightforward and extensively…

Computer Vision and Pattern Recognition · Computer Science 2023-11-27 Tuan Truong , Sadegh Mohammadi , Matthias Lenga

Deep neural network-based image classification can be misled by adversarial examples with small and quasi-imperceptible perturbations. Furthermore, the adversarial examples created on one classification model can also fool another different…

Computer Vision and Pattern Recognition · Computer Science 2021-11-23 Jindong Gu , Hengshuang Zhao , Volker Tresp , Philip Torr

We investigate the effects of the unsupervised pre-training method under the perspective of information theory. If the input distribution displays multiple views of the supervision, then unsupervised pre-training allows to learn…

Machine Learning · Computer Science 2019-05-31 Nicolas Pinchaud

Pre-trained word embeddings are the primary method for transfer learning in several Natural Language Processing (NLP) tasks. Recent works have focused on using unsupervised techniques such as language modeling to obtain these embeddings. In…

Computation and Language · Computer Science 2019-07-01 Mihir Kale , Aditya Siddhant , Sreyashi Nag , Radhika Parik , Matthias Grabmair , Anthony Tomasic

Pre-training has been a popular learning paradigm in deep learning era, especially in annotation-insufficient scenario. Better ImageNet pre-trained models have been demonstrated, from the perspective of architecture, by previous research to…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Andong Deng , Xingjian Li , Di Hu , Tianyang Wang , Haoyi Xiong , Chengzhong Xu

Unsupervised meta-learning aims to learn feature representations from unsupervised datasets that can transfer to downstream tasks with limited labeled data. In this paper, we propose a novel approach to unsupervised meta-learning that…

Machine Learning · Computer Science 2025-02-11 Anna Vettoruzzo , Lorenzo Braccaioli , Joaquin Vanschoren , Marlena Nowaczyk

Given new tasks with very little data$-$such as new classes in a classification problem or a domain shift in the input$-$performance of modern vision systems degrades remarkably quickly. In this work, we illustrate how the neural network…

Computer Vision and Pattern Recognition · Computer Science 2021-02-18 Carl Doersch , Ankush Gupta , Andrew Zisserman

While the majority of today's object class models provide only 2D bounding boxes, far richer output hypotheses are desirable including viewpoint, fine-grained category, and 3D geometry estimate. However, models trained to provide richer…

Computer Vision and Pattern Recognition · Computer Science 2014-02-18 Bojan Pepik , Michael Stark , Peter Gehler , Bernt Schiele

Pretrained language models have shown success in various areas of natural language processing, including reading comprehension tasks. However, when applying machine learning methods to new domains, labeled data may not always be available.…

Computation and Language · Computer Science 2022-06-15 Xiang Pan , Alex Sheng , David Shimshoni , Aditya Singhal , Sara Rosenthal , Avirup Sil

Transfer learning is the predominant paradigm for training deep networks on small target datasets. Models are typically pretrained on large ``upstream'' datasets for classification, as such labels are easy to collect, and then finetuned on…

Computer Vision and Pattern Recognition · Computer Science 2022-07-11 Anurag Arnab , Xuehan Xiong , Alexey Gritsenko , Rob Romijnders , Josip Djolonga , Mostafa Dehghani , Chen Sun , Mario Lučić , Cordelia Schmid

Label-scarce, high-dimensional domains such as healthcare present a challenge for modern machine learning techniques. To overcome the difficulties posed by a lack of labeled data, we explore an "order-contrastive" method for self-supervised…

Machine Learning · Computer Science 2022-03-30 Monica Agrawal , Hunter Lang , Michael Offin , Lior Gazit , David Sontag

Fine-grained classification is a challenging task that involves identifying subtle differences between objects within the same category. This task is particularly challenging in scenarios where data is scarce. Visual transformers (ViT) have…

Computer Vision and Pattern Recognition · Computer Science 2023-05-18 Manuel Lagunas , Brayan Impata , Victor Martinez , Virginia Fernandez , Christos Georgakis , Sofia Braun , Felipe Bertrand

Large intra-class variation is the result of changes in multiple object characteristics. Images, however, only show the superposition of different variable factors such as appearance or shape. Therefore, learning to disentangle and…

Computer Vision and Pattern Recognition · Computer Science 2019-06-18 Dominik Lorenz , Leonard Bereska , Timo Milbich , Björn Ommer

Self-supervised learning has significantly improved the performance of many NLP tasks. However, how can self-supervised learning discover useful representations, and why is it better than traditional approaches such as probabilistic models…

Computation and Language · Computer Science 2023-03-01 Zeping Luo , Shiyou Wu , Cindy Weng , Mo Zhou , Rong Ge

Transfer learning is a popular method for tuning pretrained (upstream) models for different downstream tasks using limited data and computational resources. We study how an adversary with control over an upstream model used in transfer…

Machine Learning · Computer Science 2023-03-22 Yulong Tian , Fnu Suya , Anshuman Suri , Fengyuan Xu , David Evans

We consider unsupervised domain adaptation: given labelled examples from a source domain and unlabelled examples from a related target domain, the goal is to infer the labels of target examples. Under the assumption that features from…

Machine Learning · Statistics 2019-01-08 Jeroen Manders , Twan van Laarhoven , Elena Marchiori

Supervised learning has proved effective for medical image analysis. However, it can utilize only the small labeled portion of data; it fails to leverage the large amounts of unlabeled data that is often available in medical image datasets.…

Computer Vision and Pattern Recognition · Computer Science 2020-04-28 Gaurav Fotedar , Nima Tajbakhsh , Shilpa Ananth , Xiaowei Ding

Self-supervised pre-training, based on the pretext task of instance discrimination, has fueled the recent advance in label-efficient object detection. However, existing studies focus on pre-training only a feature extractor network to learn…

Computer Vision and Pattern Recognition · Computer Science 2024-02-16 Nanqing Dong , Linus Ericsson , Yongxin Yang , Ales Leonardis , Steven McDonagh