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Balancing performance trade-off on long-tail (LT) data distributions remains a long-standing challenge. In this paper, we posit that this dilemma stems from a phenomenon called "tail performance degradation" (the model tends to severely…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Shenghan Chen , Yiming Liu , Yanzhen Wang , Yujia Wang , Xiankai Lu

Classification on long-tailed distributed data is a challenging problem, which suffers from serious class-imbalance and accordingly unpromising performance especially on tail classes. Recently, the ensembling based methods achieve the…

机器学习 · 计算机科学 2022-03-28 Bolian Li , Zongbo Han , Haining Li , Huazhu Fu , Changqing Zhang

Most existing methods that cope with noisy labels usually assume that the class distributions are well balanced, which has insufficient capacity to deal with the practical scenarios where training samples have imbalanced distributions. To…

计算机视觉与模式识别 · 计算机科学 2022-09-27 Chaowei Fang , Lechao Cheng , Huiyan Qi , Dingwen Zhang

Long-tailed data is prevalent in real-world classification tasks and heavily relies on supervised information, which makes the annotation process exceptionally labor-intensive and time-consuming. Unfortunately, despite being a common…

机器学习 · 计算机科学 2024-12-04 Meng Wei , Zhongnian Li , Yong Zhou , Xinzheng Xu

The distribution of data in the world (eg, internet, etc.) significantly differs from the well-curated datasets and is often over-populated with samples from common categories. The algorithms designed for well-curated datasets perform…

机器学习 · 计算机科学 2025-07-30 Harsh Rangwani

In real-world scenarios, data tends to exhibit a long-tailed distribution, which increases the difficulty of training deep networks. In this paper, we propose a novel self-paced knowledge distillation framework, termed Learning From…

计算机视觉与模式识别 · 计算机科学 2020-09-22 Liuyu Xiang , Guiguang Ding , Jungong Han

How to estimate the uncertainty of a given model is a crucial problem. Current calibration techniques treat different classes equally and thus implicitly assume that the distribution of training data is balanced, but ignore the fact that…

计算机视觉与模式识别 · 计算机科学 2023-04-14 Jiahao Chen , Bing Su

Despite recent advancements in out-of-distribution (OOD) detection, most current studies assume a class-balanced in-distribution training dataset, which is rarely the case in real-world scenarios. This paper addresses the challenging task…

机器学习 · 计算机科学 2023-12-15 Tong Wei , Bo-Lin Wang , Min-Ling Zhang

Real world data often have a long-tailed and open-ended distribution. A practical recognition system must classify among majority and minority classes, generalize from a few known instances, and acknowledge novelty upon a never seen…

计算机视觉与模式识别 · 计算机科学 2019-04-17 Ziwei Liu , Zhongqi Miao , Xiaohang Zhan , Jiayun Wang , Boqing Gong , Stella X. Yu

Despite the great success in Natural Language Processing (NLP) area, large pre-trained language models like BERT are not well-suited for resource-constrained or real-time applications owing to the large number of parameters and slow…

计算与语言 · 计算机科学 2021-07-02 Keli Xie , Siyuan Lu , Meiqi Wang , Zhongfeng Wang

Personalized Federated Learning (PFL) enables collaboratively model training on decentralized, heterogeneous data while tailoring them to each client's unique distribution. However, existing PFL methods produce static models with a fixed…

机器学习 · 计算机科学 2026-01-16 Boyi Liu , Zimu Zhou , Yongxin Tong

Deploying large language model inference remains challenging due to their high computational overhead. Early exit optimizes model inference by adaptively reducing the number of inference layers. Current methods typically train internal…

计算与语言 · 计算机科学 2026-03-05 Lianming Huang , Shangyu Wu , Yufei Cui , Ying Xiong , Haibo Hu , Xue Liu , Tei-Wei Kuo , Nan Guan , Chun Jason Xue

We propose GradTail, an algorithm that uses gradients to improve model performance on the fly in the face of long-tailed training data distributions. Unlike conventional long-tail classifiers which operate on converged - and possibly…

机器学习 · 计算机科学 2022-01-20 Zhao Chen , Vincent Casser , Henrik Kretzschmar , Dragomir Anguelov

Real world data often exhibits a long-tailed and open-ended (with unseen classes) distribution. A practical recognition system must balance between majority (head) and minority (tail) classes, generalize across the distribution, and…

计算机视觉与模式识别 · 计算机科学 2022-08-18 Ziwei Liu , Zhongqi Miao , Xiaohang Zhan , Jiayun Wang , Boqing Gong , Stella X. Yu

Early exiting allows instances to exit at different layers according to the estimation of difficulty. Previous works usually adopt heuristic metrics such as the entropy of internal outputs to measure instance difficulty, which suffers from…

计算与语言 · 计算机科学 2022-03-04 Tianxiang Sun , Xiangyang Liu , Wei Zhu , Zhichao Geng , Lingling Wu , Yilong He , Yuan Ni , Guotong Xie , Xuanjing Huang , Xipeng Qiu

Recently, long-tailed image classification harvests lots of research attention, since the data distribution is long-tailed in many real-world situations. Piles of algorithms are devised to address the data imbalance problem by biasing the…

计算机视觉与模式识别 · 计算机科学 2023-02-06 Chaowei Fang , Dingwen Zhang , Wen Zheng , Xue Li , Le Yang , Lechao Cheng , Junwei Han

Real-world datasets commonly exhibit noisy labels and class imbalance, such as long-tailed distributions. While previous research addresses this issue by differentiating noisy and clean samples, reliance on information from predictions…

机器学习 · 计算机科学 2024-03-06 Ying-Hsuan Wu , Jun-Wei Hsieh , Li Xin , Shin-You Teng , Yi-Kuan Hsieh , Ming-Ching Chang

Personalized Federated Learning (PFL) aims to acquire customized models for each client without disclosing raw data by leveraging the collective knowledge of distributed clients. However, the data collected in real-world scenarios is likely…

机器学习 · 计算机科学 2024-08-06 Fengling Lv , Xinyi Shang , Yang Zhou , Yiqun Zhang , Mengke Li , Yang Lu

Extreme learning machine (ELM), proposed by Huang et al., has been shown a promising learning algorithm for single-hidden layer feedforward neural networks (SLFNs). Nevertheless, because of the random choice of input weights and biases, the…

神经与进化计算 · 计算机科学 2014-09-16 Yuguang Wang , Feilong Cao , Yubo Yuan

Real-world data consistently exhibits a long-tailed distribution, often spanning multiple categories. This complexity underscores the challenge of content comprehension, particularly in scenarios requiring Long-Tailed Multi-Label image…

计算机视觉与模式识别 · 计算机科学 2024-08-16 Jiexuan Yan , Sheng Huang , Nankun Mu , Luwen Huangfu , Bo Liu