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In this work we propose for the first time a transformer-based framework for unsupervised representation learning of multivariate time series. Pre-trained models can be potentially used for downstream tasks such as regression and…

机器学习 · 计算机科学 2020-12-10 George Zerveas , Srideepika Jayaraman , Dhaval Patel , Anuradha Bhamidipaty , Carsten Eickhoff

Self-supervised learning has proven to be an effective way to learn representations in domains where annotated labels are scarce, such as medical imaging. A widely adopted framework for this purpose is contrastive learning and it has been…

计算机视觉与模式识别 · 计算机科学 2024-02-23 Hugo Figueiras , Helena Aidos , Nuno Cruz Garcia

In this study, we investigated whether self-supervised pretraining could produce a neural network feature extractor applicable to multiple classification tasks in B-mode lung ultrasound analysis. When fine-tuning on three lung ultrasound…

计算机视觉与模式识别 · 计算机科学 2023-09-07 Blake VanBerlo , Brian Li , Jesse Hoey , Alexander Wong

Developing successful artificial intelligence systems in practice depends on both robust deep learning models and large, high-quality data. However, acquiring and labeling data can be prohibitively expensive and time-consuming in many…

计算机视觉与模式识别 · 计算机科学 2024-03-19 Saba Dadsetan , Mohsen Hejrati , Shandong Wu , Somaye Hashemifar

Context. We study the benefits of using a large public neuroimaging database composed of fMRI statistic maps, in a self-taught learning framework, for improving brain decoding on new tasks. First, we leverage the NeuroVault database to…

神经与进化计算 · 计算机科学 2023-04-25 Elodie Germani , Elisa Fromont , Camille Maumet

Pre-training has marked numerous state of the arts in high-level computer vision, while few attempts have ever been made to investigate how pre-training acts in image processing systems. In this paper, we tailor transformer-based…

计算机视觉与模式识别 · 计算机科学 2022-03-22 Wenbo Li , Xin Lu , Shengju Qian , Jiangbo Lu , Xiangyu Zhang , Jiaya Jia

Image reconstruction from undersampled k-space data plays an important role in accelerating the acquisition of MR data, and a lot of deep learning-based methods have been exploited recently. Despite the achieved inspiring results, the…

计算机视觉与模式识别 · 计算机科学 2021-09-28 Chen Hu , Cheng Li , Haifeng Wang , Qiegen Liu , Hairong Zheng , Shanshan Wang

A fundamental challenge in neuroscience is to decode mental states from brain activity. While functional magnetic resonance imaging (fMRI) offers a non-invasive approach to capture brain-wide neural dynamics with high spatial precision,…

图像与视频处理 · 电气工程与系统科学 2025-07-31 Yueh-Po Peng , Vincent K. M. Cheung , Li Su

Supervised deep learning methods for performing audio source separation can be very effective in domains where there is a large amount of training data. While some music domains have enough data suitable for training a separation system,…

声音 · 计算机科学 2020-10-27 Andreas Bugler , Bryan Pardo , Prem Seetharaman

Decoding brain states from functional magnetic resonance imaging (fMRI) data is vital for advancing neuroscience and clinical applications. While traditional machine learning and deep learning approaches have made strides in leveraging the…

机器学习 · 计算机科学 2025-12-10 Danial Jafarzadeh Jazi , Maryam Hajiesmaeili

Pretrained Transformer based models finetuned on domain specific corpora have changed the landscape of NLP. However, training or fine-tuning these models for individual tasks can be time consuming and resource intensive. Thus, a lot of…

In this work, we investigate the potential of improving multi-task training and also leveraging it for transferring in the reinforcement learning setting. We identify several challenges towards this goal and propose a transferring approach…

机器人学 · 计算机科学 2023-06-06 Lingfeng Sun , Haichao Zhang , Wei Xu , Masayoshi Tomizuka

The research community has witnessed the powerful potential of self-supervised Masked Image Modeling (MIM), which enables the models capable of learning visual representation from unlabeled data. In this paper, to incorporate both the…

计算机视觉与模式识别 · 计算机科学 2023-12-01 Wenxuan Wang , Jing Wang , Chen Chen , Jianbo Jiao , Yuanxiu Cai , Shanshan Song , Jiangyun Li

Semi-supervised learning techniques are gaining popularity due to their capability of building models that are effective, even when scarce amounts of labeled data are available. In this paper, we present a framework and specific tasks for…

图像与视频处理 · 电气工程与系统科学 2022-10-05 Antonio Montanaro , Diego Valsesia , Giulia Fracastoro , Enrico Magli

Stimulus decoding of functional Magnetic Resonance Imaging (fMRI) data with machine learning models has provided new insights about neural representational spaces and task-related dynamics. However, the scarcity of labelled (task-related)…

神经元与认知 · 定量生物学 2023-05-17 Sean Paulsen , Lloyd May , Michael Casey

We propose to simultaneously learn to sample and reconstruct magnetic resonance images (MRI) to maximize the reconstruction quality given a limited sample budget, in a self-supervised setup. Unlike existing deep methods that focus only on…

计算机视觉与模式识别 · 计算机科学 2019-01-16 Kyong Hwan Jin , Michael Unser , Kwang Moo Yi

Self-supervised learning has emerged as a powerful approach for leveraging large-scale unlabeled data to improve model performance in various domains. In this paper, we explore masked self-supervised pre-training for text recognition…

计算机视觉与模式识别 · 计算机科学 2025-03-31 Martin Kišš , Michal Hradiš

This work investigates the unexplored usability of self-supervised representation learning in the direction of functional knowledge transfer. In this work, functional knowledge transfer is achieved by joint optimization of self-supervised…

Data reconstruction is a widely used pre-training task to learn the generalized features for many downstream tasks. Although reconstruction tasks have been applied to neural signal completion and denoising, neural signal reconstruction is…

神经元与认知 · 定量生物学 2024-07-02 Youzhi Qu , Junfeng Xia , Xinyao Jian , Wendu Li , Kaining Peng , Zhichao Liang , Haiyan Wu , Quanying Liu

Pre-trained models, e.g., from ImageNet, have proven to be effective in boosting the performance of many downstream applications. It is too demanding to acquire large-scale annotations to build such models for medical imaging. Meanwhile,…

计算机视觉与模式识别 · 计算机科学 2021-03-31 Xiaosong Wang , Ziyue Xu , Leo Tam , Dong Yang , Daguang Xu