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Selecting a coherent sequence or subset of elements is a fundamental problem in structured prediction, arising in tasks such as detection, trajectory forecasting, and representative subset selection. In many such settings, the target is…

机器学习 · 计算机科学 2026-05-12 Noam Mizrachi , Nadav Har-Tuv , Shai Shalev-Shwartz

Continual learning refers to the ability to acquire and transfer knowledge without catastrophically forgetting what was previously learned. In this work, we consider \emph{few-shot} continual learning in classification tasks, and we propose…

计算机视觉与模式识别 · 计算机科学 2020-02-18 Mengmi Zhang , Tao Wang , Joo Hwee Lim , Gabriel Kreiman , Jiashi Feng

Contrastive learning allows us to flexibly define powerful losses by contrasting positive pairs from sets of negative samples. Recently, the principle has also been used to learn cross-modal embeddings for video and text, yet without…

计算机视觉与模式识别 · 计算机科学 2021-10-01 Mohammadreza Zolfaghari , Yi Zhu , Peter Gehler , Thomas Brox

Contrastive learning is widely used in clustering tasks due to its discriminative representation. However, the conflict problem between classes is difficult to solve effectively. Existing methods try to solve this problem through prototype…

计算机视觉与模式识别 · 计算机科学 2025-08-22 Shihao Dong , Xiaotong Zhou , Yuhui Zheng , Huiying Xu , Xinzhong Zhu

Few-shot learning, a challenging task in machine learning, aims to learn a classifier adaptable to recognize new, unseen classes with limited labeled examples. Meta-learning has emerged as a prominent framework for few-shot learning. Its…

机器学习 · 计算机科学 2024-03-07 Weihao Jiang , Guodong Liu , Di He , Kun He

Contrastive learning produces coherent semantic feature embeddings by encouraging positive samples to cluster closely while separating negative samples. However, existing contrastive learning methods lack principled guarantees on coverage…

机器学习 · 计算机科学 2026-03-30 Yahya Alkhatib , Wee Peng Tay

Few-shot learning (FSL) targets at generalization of vision models towards unseen tasks without sufficient annotations. Despite the emergence of a number of few-shot learning methods, the sample selection bias problem, i.e., the sensitivity…

计算机视觉与模式识别 · 计算机科学 2022-11-01 Jing Xu , Xu Luo , Xinglin Pan , Wenjie Pei , Yanan Li , Zenglin Xu

Recently, prototype learning has emerged in semi-supervised medical image segmentation and achieved remarkable performance. However, the scarcity of labeled data limits the expressiveness of prototypes in previous methods, potentially…

计算机视觉与模式识别 · 计算机科学 2025-05-23 Lijian Li , Yuanpeng He , Chi-Man Pun

Few-shot class-incremental learning (FSCIL) struggles to incrementally recognize novel classes from few examples without catastrophic forgetting of old classes or overfitting to new classes. We propose TLCE, which ensembles multiple…

计算机视觉与模式识别 · 计算机科学 2023-12-08 Shuangmei Wang , Yang Cao , Tieru Wu

Humans exhibit a remarkable ability to learn quickly from a limited number of labeled samples, a capability that starkly contrasts with that of current machine learning systems. Unsupervised Few-Shot Learning (U-FSL) seeks to bridge this…

计算机视觉与模式识别 · 计算机科学 2024-08-27 Zhenyu Zhang , Guangyao Chen , Yixiong Zou , Zhimeng Huang , Yuhua Li , Ruixuan Li

Video Large Language Models (VideoLLMs) excel at video understanding tasks where outputs are textual, such as Video Question Answering and Video Captioning. However, they underperform specialized embedding-based models in Retrieval tasks,…

计算机视觉与模式识别 · 计算机科学 2026-04-15 Rohit Gupta , Jayakrishnan Unnikrishnan , Fan Fei , Sheng Liu , Son Tran , Mubarak Shah

Recent studies have revealed the intriguing few-shot learning ability of pretrained language models (PLMs): They can quickly adapt to a new task when fine-tuned on a small amount of labeled data formulated as prompts, without requiring…

计算与语言 · 计算机科学 2023-05-15 Yu Meng , Martin Michalski , Jiaxin Huang , Yu Zhang , Tarek Abdelzaher , Jiawei Han

Real-world classification tasks are frequently required to work in an open-set setting. This is especially challenging for few-shot learning problems due to the small sample size for each known category, which prevents existing open-set…

计算机视觉与模式识别 · 计算机科学 2021-09-15 Jedrzej Kozerawski , Matthew Turk

Conventional event detection models under supervised learning settings suffer from the inability of transfer to newly-emerged event types owing to lack of sufficient annotations. A commonly-adapted solution is to follow a…

计算与语言 · 计算机科学 2022-10-24 Ruihan Zhang , Wei Wei , Xian-Ling Mao , Rui Fang , Dangyang Chen

Contrastive learning has become a new paradigm for unsupervised sentence embeddings. Previous studies focus on instance-wise contrastive learning, attempting to construct positive pairs with textual data augmentation. In this paper, we…

计算与语言 · 计算机科学 2022-12-13 Jiali Zeng , Yongjing Yin , Yufan Jiang , Shuangzhi Wu , Yunbo Cao

Object recognition in the real-world requires handling long-tailed or even open-ended data. An ideal visual system needs to recognize the populated head visual concepts reliably and meanwhile efficiently learn about emerging new tail…

计算机视觉与模式识别 · 计算机科学 2021-06-29 Han-Jia Ye , Hexiang Hu , De-Chuan Zhan

Continual Few-shot Relation Extraction (CFRE) is a practical problem that requires the model to continuously learn novel relations while avoiding forgetting old ones with few labeled training data. The primary challenges are catastrophic…

计算与语言 · 计算机科学 2024-02-27 Shengkun Ma , Jiale Han , Yi Liang , Bo Cheng

The existing few-shot video classification methods often employ a meta-learning paradigm by designing customized temporal alignment module for similarity calculation. While significant progress has been made, these methods fail to focus on…

计算机视觉与模式识别 · 计算机科学 2021-10-26 Zhenxi Zhu , Limin Wang , Sheng Guo , Gangshan Wu

Semi-supervised learning acts as an effective way to leverage massive unlabeled data. In this paper, we propose a novel training strategy, termed as Semi-supervised Contrastive Learning (SsCL), which combines the well-known contrastive loss…

计算机视觉与模式识别 · 计算机科学 2021-05-18 Yuhang Zhang , Xiaopeng Zhang , Robert. C. Qiu , Jie Li , Haohang Xu , Qi Tian

Continual Federated Learning (CFL) combines Federated Learning (FL), the decentralized learning of a central model on a number of client devices that may not communicate their data, and Continual Learning (CL), the learning of a model from…

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