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This paper presents a conformal prediction method for classification in highly imbalanced and open-set settings, where there are many possible classes and not all may be represented in the data. Existing approaches require a finite, known…

Machine Learning · Statistics 2025-10-16 Tianmin Xie , Yanfei Zhou , Ziyi Liang , Stefano Favaro , Matteo Sesia

Long-tailed relation classification is a challenging problem as the head classes may dominate the training phase, thereby leading to the deterioration of the tail performance. Existing solutions usually address this issue via…

Machine Learning · Computer Science 2023-01-26 Haiyang Yu , Ningyu Zhang , Shumin Deng , Zonggang Yuan , Yantao Jia , Huajun Chen

In contrast to multi-label learning, label distribution learning characterizes the polysemy of examples by a label distribution to represent richer semantics. In the learning process of label distribution, the training data is collected…

Machine Learning · Computer Science 2022-09-29 Zhuoran Zheng , Xiuyi Jia

Continual learning aims to improve the ability of modern learning systems to deal with non-stationary distributions, typically by attempting to learn a series of tasks sequentially. Prior art in the field has largely considered supervised…

Machine Learning · Computer Science 2019-11-01 Dushyant Rao , Francesco Visin , Andrei A. Rusu , Yee Whye Teh , Razvan Pascanu , Raia Hadsell

Motivation: Despite recent advancements in semantic representation driven by pre-trained and large-scale language models, addressing long tail challenges in multi-label text classification remains a significant issue. Long tail challenges…

Computation and Language · Computer Science 2025-03-12 Yan Yan , Junyuan Liu , Bo-Wen Zhang

Partial-label learning is a popular weakly supervised learning setting that allows each training example to be annotated with a set of candidate labels. Previous studies on partial-label learning only focused on the classification setting…

Machine Learning · Computer Science 2023-06-16 Xin Cheng , Deng-Bao Wang , Lei Feng , Min-Ling Zhang , Bo An

Generalized Category Discovery (GCD) utilizes labeled samples of known classes to discover novel classes in unlabeled samples. Existing methods show effective performance on artificial datasets with balanced distributions. However,…

Artificial Intelligence · Computer Science 2025-07-31 Cuong Manh Hoang

We present a new replay-based method of continual classification learning that we term "conditional replay" which generates samples and labels together by sampling from a distribution conditioned on the class. We compare conditional replay…

Machine Learning · Computer Science 2019-07-02 Timothée Lesort , Alexander Gepperth , Andrei Stoian , David Filliat

To ensure that the data collected from human subjects is entrusted with a secret, rival labels are introduced to conceal the information provided by the participants on purpose. The corresponding learning task can be formulated as a noisy…

Machine Learning · Computer Science 2023-04-04 Cheng Chen , Yueming Lyu , Ivor W. Tsang

Real-world imagery is often characterized by a significant imbalance of the number of images per class, leading to long-tailed distributions. An effective and simple approach to long-tailed visual recognition is to learn feature…

Computer Vision and Pattern Recognition · Computer Science 2022-01-14 Ahmet Iscen , André Araujo , Boqing Gong , Cordelia Schmid

Data imbalance, in which a plurality of the data samples come from a small proportion of labels, poses a challenge in training deep neural networks. Unlike classification, in regression the labels are continuous, potentially boundless, and…

Machine Learning · Computer Science 2022-06-27 Yu Gong , Greg Mori , Frederick Tung

Long-tailed distributions are common in real-world recognition tasks, where a few head classes have many samples while most tail classes have very few. Recently, fine-tuning foundation models for long-tailed learning has gained attention…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Ruichi Zhang , Chikai Shang , Jiacheng Yang , Mengke Li , Yang Zhou , Junlong Gao , Yang Lu

Most of the medical tasks naturally exhibit a long-tailed distribution due to the complex patient-level conditions and the existence of rare diseases. Existing long-tailed learning methods usually treat each class equally to re-balance the…

Computer Vision and Pattern Recognition · Computer Science 2025-05-29 Lie Ju , Yicheng Wu , Lin Wang , Zhen Yu , Xin Zhao , Xin Wang , Paul Bonnington , Zongyuan Ge

Dataset distillation aims to synthesize a small, information-rich dataset from a large one for efficient model training. However, existing dataset distillation methods struggle with long-tailed datasets, which are prevalent in real-world…

Machine Learning · Computer Science 2025-03-20 Zhenghao Zhao , Haoxuan Wang , Yuzhang Shang , Kai Wang , Yan Yan

Continual learning aims to provide intelligent agents that are capable of learning continually a sequence of tasks, building on previously learned knowledge. A key challenge in this learning paradigm is catastrophically forgetting…

Machine Learning · Computer Science 2021-01-18 Ghada Sokar , Decebal Constantin Mocanu , Mykola Pechenizkiy

A key challenge for machine intelligence is to learn new visual concepts without forgetting the previously acquired knowledge. Continual learning is aimed towards addressing this challenge. However, there is a gap between existing…

Machine Learning · Computer Science 2024-02-01 Yan Luo , Yongkang Wong , Mohan Kankanhalli , Qi Zhao

In today's connected world, the generation of massive streaming data across diverse domains has become commonplace. In the presence of concept drift, class imbalance, label scarcity, and new class emergence, they jointly degrade…

Machine Learning · Computer Science 2026-02-11 Jin Li , Kleanthis Malialis , Marios Polycarpou

Continual learning, the setting where a learning agent is faced with a never ending stream of data, continues to be a great challenge for modern machine learning systems. In particular the online or "single-pass through the data" setting…

Machine Learning · Computer Science 2019-10-31 Rahaf Aljundi , Lucas Caccia , Eugene Belilovsky , Massimo Caccia , Min Lin , Laurent Charlin , Tinne Tuytelaars

Multi-label class-incremental learning (MLCIL) is essential for real-world multi-label applications, allowing models to learn new labels while retaining previously learned knowledge continuously. However, recent MLCIL approaches can only…

Computer Vision and Pattern Recognition · Computer Science 2024-08-23 Kaile Du , Yifan Zhou , Fan Lyu , Yuyang Li , Junzhou Xie , Yixi Shen , Fuyuan Hu , Guangcan Liu

Semi-supervised regression (SSR), which aims to predict continuous scores for samples while reducing the reliance on large-scale labeled data, has recently attracted considerable attention across various applications, including computer…

Machine Learning · Computer Science 2026-05-28 Ye Su , Hezhe Qiao , Wei Huang , Lin Chen