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Improving generalization is a major challenge in audio classification due to labeled data scarcity. Self-supervised learning (SSL) methods tackle this by leveraging unlabeled data to learn useful features for downstream classification…

Audio and Speech Processing · Electrical Eng. & Systems 2021-12-22 Melikasadat Emami , Dung Tran , Kazuhito Koishida

Self-supervised learning (SSL) methods have shown promise for medical imaging applications by learning meaningful visual representations, even when the amount of labeled data is limited. Here, we extend state-of-the-art contrastive learning…

In this paper, we present an end-to-end trainable unified multiscale encoder-decoder transformer that is focused on dense prediction tasks in video. The presented Multiscale Encoder-Decoder Video Transformer (MED-VT) uses multiscale…

Computer Vision and Pattern Recognition · Computer Science 2024-09-18 Rezaul Karim , He Zhao , Richard P. Wildes , Mennatullah Siam

The high efficiency in computation and storage makes hashing (including binary hashing and quantization) a common strategy in large-scale retrieval systems. To alleviate the reliance on expensive annotations, unsupervised deep hashing…

Computer Vision and Pattern Recognition · Computer Science 2022-03-09 Jinpeng Wang , Ziyun Zeng , Bin Chen , Tao Dai , Shu-Tao Xia

Self-supervised contrastive learning offers a means of learning informative features from a pool of unlabeled data. In this paper, we delve into another useful approach -- providing a way of selecting a core-set that is entirely unlabeled.…

Machine Learning · Computer Science 2021-04-08 Jeongwoo Ju , Heechul Jung , Yoonju Oh , Junmo Kim

Multi-task learning promises better model generalization on a target task by jointly optimizing it with an auxiliary task. However, the current practice requires additional labeling efforts for the auxiliary task, while not guaranteeing…

Computer Vision and Pattern Recognition · Computer Science 2022-10-14 Menelaos Kanakis , Thomas E. Huang , David Bruggemann , Fisher Yu , Luc Van Gool

Self-supervised learning (SSL) plays a central role in molecular representation learning. Yet, many recent innovations in masking-based pretraining are introduced as heuristics and lack principled evaluation, obscuring which design choices…

Machine Learning · Computer Science 2025-12-09 Jiannan Yang , Veronika Thost , Tengfei Ma

Contrastive pretraining on image-text pairs from the web is one of the most popular large-scale pretraining strategies for vision backbones, especially in the context of large multimodal models. At the same time, image captioning on this…

Computer Vision and Pattern Recognition · Computer Science 2023-12-22 Michael Tschannen , Manoj Kumar , Andreas Steiner , Xiaohua Zhai , Neil Houlsby , Lucas Beyer

In this paper, we present a novel cross-consistency based semi-supervised approach for semantic segmentation. Consistency training has proven to be a powerful semi-supervised learning framework for leveraging unlabeled data under the…

Computer Vision and Pattern Recognition · Computer Science 2020-06-11 Yassine Ouali , Céline Hudelot , Myriam Tami

Contrastive Learning (CL) has emerged as a powerful method for training feature extraction models using unlabeled data. Recent studies suggest that incorporating a linear projection head post-backbone significantly enhances model…

Machine Learning · Computer Science 2024-10-08 Huanran Li , Daniel Pimentel-Alarcón

Prohibited item detection based on X-ray images is one of the most effective security inspection methods. However, the foreground-background feature coupling caused by the overlapping phenomenon specific to X-ray images makes general…

Computer Vision and Pattern Recognition · Computer Science 2025-11-12 Mingyuan Li , Tong Jia , Hao Wang , Bowen Ma , Hui Lu , Shiyi Guo , Da Cai , Dongyue Chen

In direct imaging at high contrast, the bright glare produced by the host star makes the detection and the characterization of sub-stellar companions particularly challenging. In spite of the use of an extreme adaptive optics system…

Instrumentation and Methods for Astrophysics · Physics 2024-09-23 Olivier Flasseur , Théo Bodrito , Julien Mairal , Jean Ponce , Maud Langlois , Anne-Marie Lagrange

Self-supervision is one of the hallmarks of representation learning in the increasingly popular suite of foundation models including large language models such as BERT and GPT-3, but it has not been pursued in the context of multivariate…

Machine Learning · Computer Science 2024-02-05 Xiao Shou , Dharmashankar Subramanian , Debarun Bhattacharjya , Tian Gao , Kristin P. Bennet

Large-scale foundation models, such as CLIP, have demonstrated remarkable success in visual recognition tasks by embedding images in a semantically rich space. Self-supervised learning (SSL) has also shown promise in improving visual…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Mainak Singha , Ankit Jha , Biplab Banerjee

Recently, the advent of Large Visual-Language Models (LVLMs) has received increasing attention across various domains, particularly in the field of visual document understanding (VDU). Different from conventional vision-language tasks, VDU…

Computer Vision and Pattern Recognition · Computer Science 2024-03-01 Xin Li , Yunfei Wu , Xinghua Jiang , Zhihao Guo , Mingming Gong , Haoyu Cao , Yinsong Liu , Deqiang Jiang , Xing Sun

Contrastive self-supervised learning (CSL) based on instance discrimination typically attracts positive samples while repelling negatives to learn representations with pre-defined binary self-supervision. However, vanilla CSL is inadequate…

Computer Vision and Pattern Recognition · Computer Science 2022-11-04 Yifei Zhang , Chang Liu , Yu Zhou , Weiping Wang , Qixiang Ye , Xiangyang Ji

Recent weakly supervised video anomaly detection methods have achieved significant advances by employing unified frameworks for joint optimization. However, this paradigm is limited by a fundamental sensitivity-stability trade-off, as the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-23 Hantao Zheng , Ning Han , Yawen Zeng , Hao Chen

The training paradigm of DETRs is heavily contingent upon pre-training their backbone on the ImageNet dataset. However, the limited supervisory signals provided by the image classification task and one-to-one matching strategy result in an…

Computer Vision and Pattern Recognition · Computer Science 2024-02-27 Haodong Ouyang

Contrastive Learning (CL), a leading paradigm in Self-Supervised Learning (SSL), typically relies on pairs of data views generated through augmentation. While multiple augmentations per instance (more than two) improve generalization in…

Recommender systems are widely deployed in various web environments, and self-supervised learning (SSL) has recently attracted significant attention in this field. Contrastive learning (CL) stands out as a major SSL paradigm due to its…

Information Retrieval · Computer Science 2025-01-17 Yu Zhang , Lei Sang , Yi Zhang , Yiwen Zhang , Yun Yang