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Variational autoencoders (VAEs) have ushered in a new era of unsupervised learning methods for complex distributions. Although these techniques are elegant in their approach, they are typically not useful for representation learning. In…

Machine Learning · Computer Science 2020-01-10 Ali Lotfi Rezaabad , Sriram Vishwanath

We present PECMAE, an interpretable model for music audio classification based on prototype learning. Our model is based on a previous method, APNet, which jointly learns an autoencoder and a prototypical network. Instead, we propose to…

Masked point modeling methods have recently achieved great success in self-supervised learning for point cloud data. However, these methods are sensitive to rotations and often exhibit sharp performance drops when encountering rotational…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Kunming Su , Qiuxia Wu , Panpan Cai , Xiaogang Zhu , Xuequan Lu , Zhiyong Wang , Kun Hu

Establishing correspondence between images or scenes is a significant challenge in computer vision, especially given occlusions, viewpoint changes, and varying object appearances. In this paper, we present Siamese Masked Autoencoders…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 Agrim Gupta , Jiajun Wu , Jia Deng , Li Fei-Fei

We propose a method named AudioFormer,which learns audio feature representations through the acquisition of discrete acoustic codes and subsequently fine-tunes them for audio classification tasks. Initially,we introduce a novel perspective…

Sound · Computer Science 2023-08-28 Zhaohui Li , Haitao Wang , Xinghua Jiang

Multivariate Time Series forecasting has been an increasingly popular topic in various applications and scenarios. Recently, contrastive learning and Transformer-based models have achieved good performance in many long-term series…

Machine Learning · Computer Science 2023-01-24 Zhe Li , Zhongwen Rao , Lujia Pan , Pengyun Wang , Zenglin Xu

For a complete comprehension of multi-person scenes, it is essential to go beyond basic tasks like detection and tracking. Higher-level tasks, such as understanding the interactions and social activities among individuals, are also crucial.…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Mahsa Ehsanpour , Ian Reid , Hamid Rezatofighi

Latest federated learning (FL) methods started to focus on how to use unlabeled data in clients for training due to users' privacy concerns, high labeling costs, or lack of expertise. However, current Federated…

Machine Learning · Computer Science 2023-03-22 Nan Yang , Xuanyu Chen , Charles Z. Liu , Dong Yuan , Wei Bao , Lizhen Cui

Masked autoencoders (MAE) have shown tremendous potential for self-supervised learning (SSL) in vision and beyond. However, point clouds from LiDARs used in automated driving are particularly challenging for MAEs since large areas of the 3D…

Computer Vision and Pattern Recognition · Computer Science 2025-02-28 Mohamed Abdelsamad , Michael Ulrich , Claudius Gläser , Abhinav Valada

Featurizing microscopy images for use in biological research remains a significant challenge, especially for large-scale experiments spanning millions of images. This work explores the scaling properties of weakly supervised classifiers and…

Can we leverage the audiovisual information already present in video to improve self-supervised representation learning? To answer this question, we study various pretraining architectures and objectives within the masked autoencoding…

Computer Vision and Pattern Recognition · Computer Science 2024-01-05 Mariana-Iuliana Georgescu , Eduardo Fonseca , Radu Tudor Ionescu , Mario Lucic , Cordelia Schmid , Anurag Arnab

In this paper, we present EH-MAM (Easy-to-Hard adaptive Masked Acoustic Modeling), a novel self-supervised learning approach for speech representation learning. In contrast to the prior methods that use random masking schemes for Masked…

Sound · Computer Science 2024-10-18 Ashish Seth , Ramaneswaran Selvakumar , S Sakshi , Sonal Kumar , Sreyan Ghosh , Dinesh Manocha

Automatic modulation classification (AMC) is a basic technology in intelligent wireless communication systems. It is important for tasks such as spectrum monitoring, cognitive radio, and secure communications. In recent years, deep learning…

Signal Processing · Electrical Eng. & Systems 2025-08-04 Yunfei Liu , Mingxuan Liu , Wupeng Xie , Xinzhu Liu , Wenxue Liu , Yangang Sun , Xin Qiu , Cui Yuan , Jinhai Li

Generalizing learned representations across significantly different visual domains is a fundamental yet crucial ability of the human visual system. While recent self-supervised learning methods have achieved good performances with…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Haiyang Yang , Meilin Chen , Yizhou Wang , Shixiang Tang , Feng Zhu , Lei Bai , Rui Zhao , Wanli Ouyang

To better support information retrieval tasks such as web search and open-domain question answering, growing effort is made to develop retrieval-oriented language models, e.g., RetroMAE and many others. Most of the existing works focus on…

Computation and Language · Computer Science 2023-05-05 Shitao Xiao , Zheng Liu , Yingxia Shao , Zhao Cao

Recently, a variational autoencoder (VAE)-based single-channel speech enhancement system using Bayesian permutation training has been proposed, which uses two pretrained VAEs to obtain latent representations for speech and noise. Based on…

Audio and Speech Processing · Electrical Eng. & Systems 2026-02-03 Jiatong Li , Simon Doclo

Current Facial Action Unit (FAU) detection methods generally encounter difficulties due to the scarcity of labeled video training data and the limited number of training face IDs, which renders the trained feature extractor insufficient…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Qiaoqiao Jin , Rui Shi , Yishun Dou , Bingbing Ni

This paper explores Masked Autoencoders (MAE) with Gaussian Splatting. While reconstructive self-supervised learning frameworks such as MAE learns good semantic abstractions, it is not trained for explicit spatial awareness. Our approach,…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Jathushan Rajasegaran , Xinlei Chen , Rulilong Li , Christoph Feichtenhofer , Jitendra Malik , Shiry Ginosar

The accurate segmentation of lesions in whole-body PET/CT imaging is es-sential for tumor characterization, treatment planning, and response assess-ment, yet current manual workflows are labor-intensive and prone to inter-observer…

Image and Video Processing · Electrical Eng. & Systems 2025-09-04 Moona Mazher , Steven A Niederer , Abdul Qayyum

Recently, self-supervised learning (SSL) techniques have been introduced to solve the monaural speech enhancement problem. Due to the lack of using clean phase information, the enhancement performance is limited in most SSL methods.…

Sound · Computer Science 2021-12-22 Yi Li , Yang Sun , Syed Mohsen Naqvi