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State-of-the-art natural language understanding classification models follow two-stages: pre-training a large language model on an auxiliary task, and then fine-tuning the model on a task-specific labeled dataset using cross-entropy loss.…

计算与语言 · 计算机科学 2021-04-06 Beliz Gunel , Jingfei Du , Alexis Conneau , Ves Stoyanov

While existing query-based 3D end-to-end visual trackers integrate detection and tracking via the tracking-by-attention paradigm, these two chicken-and-egg tasks encounter optimization difficulties when sharing the same parameters. Our…

计算机视觉与模式识别 · 计算机科学 2025-05-19 Shubo Lin , Yutong Kou , Zirui Wu , Shaoru Wang , Bing Li , Weiming Hu , Jin Gao

This paper investigates the deep learning optimization problem with softmax cross-entropy loss. We propose a layer separation strategy to alleviate the strong nonconvexity encountered during training deep networks. For cross-entropy models…

机器学习 · 计算机科学 2026-04-28 Yaru Liu , Michael K. Ng , Yiqi Gu

Optical Character Recognition (OCR) is fundamental to Vision-Language Models (VLMs) and high-quality data generation for LLM training. Yet, despite progress in average OCR accuracy, state-of-the-art VLMs still struggle with detecting…

计算机视觉与模式识别 · 计算机科学 2026-05-11 Yulong Zhang , Tianyi Liang , Xinyue Huang , Erfei Cui , Guoqing Wang , Xu Guo , Chenhui Li , Gongshen Liu

Camera traps are a method for monitoring wildlife and they collect a large number of pictures. The number of images collected of each species usually follows a long-tail distribution, i.e., a few classes have a large number of instances,…

计算机视觉与模式识别 · 计算机科学 2023-03-15 Fagner Cunha , Eulanda M. dos Santos , Juan G. Colonna

In recent years, a variety of contrastive learning based unsupervised visual representation learning methods have been designed and achieved great success in many visual tasks. Generally, these methods can be roughly classified into four…

计算机视觉与模式识别 · 计算机科学 2022-11-29 Wenbin Li , Meihao Kong , Xuesong Yang , Lei Wang , Jing Huo , Yang Gao , Jiebo Luo

In this paper, we propose an Aligned Contrastive Learning (ACL) algorithm to address the long-tailed recognition problem. Our findings indicate that while multi-view training boosts the performance, contrastive learning does not…

计算机视觉与模式识别 · 计算机科学 2025-06-03 Jiali Ma , Jiequan Cui , Maeno Kazuki , Lakshmi Subramanian , Karlekar Jayashree , Sugiri Pranata , Hanwang Zhang

Traditional empirical risk minimization (ERM) for semantic segmentation can disproportionately advantage or disadvantage certain target classes in favor of an (unfair but) improved overall performance. Inspired by the recently introduced…

计算机视觉与模式识别 · 计算机科学 2021-03-29 Attila Szabo , Hadi Jamali-Rad , Siva-Datta Mannava

Pre-training plays a vital role in various vision tasks, such as object recognition and detection. Commonly used pre-training methods, which typically rely on randomized approaches like uniform or Gaussian distributions to initialize model…

计算机视觉与模式识别 · 计算机科学 2024-11-15 Chen-Long Duan , Yong Li , Xiu-Shen Wei , Lin Zhao

Multi-view clustering has shown to be an effective method for analyzing underlying patterns in multi-view data. The performance of clustering can be improved by learning the consistency and complementarity between multi-view features,…

计算机视觉与模式识别 · 计算机科学 2025-08-20 Shihao Dong , Yuhui Zheng , Huiying Xu , Xinzhong Zhu

In neural machine translation, cross entropy (CE) is the standard loss function in two training methods of auto-regressive models, i.e., teacher forcing and scheduled sampling. In this paper, we propose mixed cross entropy loss (mixed CE)…

计算与语言 · 计算机科学 2021-07-01 Haoran Li , Wei Lu

The Cross-Entropy Method (CEM) is a widely adopted trajectory optimizer in model-based reinforcement learning (MBRL), but its unimodal sampling strategy often leads to premature convergence in multimodal landscapes. In this work, we propose…

机器学习 · 计算机科学 2025-07-02 Yuliang Gu , Hongpeng Cao , Marco Caccamo , Naira Hovakimyan

Conventional detectors suffer from performance degradation when dealing with long-tailed data due to a classification bias towards the majority head categories. In this paper, we contend that the learning bias originates from two factors:…

计算机视觉与模式识别 · 计算机科学 2023-08-07 Tianhao Qi , Hongtao Xie , Pandeng Li , Jiannan Ge , Yongdong 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

Deep neural networks may perform poorly when training datasets are heavily class-imbalanced. Recently, two-stage methods decouple representation learning and classifier learning to improve performance. But there is still the vital issue of…

计算机视觉与模式识别 · 计算机科学 2021-04-02 Zhisheng Zhong , Jiequan Cui , Shu Liu , Jiaya Jia

Knowledge Graphs~(KGs) often suffer from unreliable knowledge, which restricts their utility. Triple Classification~(TC) aims to determine the validity of triples from KGs. Recently, text-based methods learn entity and relation…

计算与语言 · 计算机科学 2026-01-21 Xu Xiaodan , Hu Xiaolin

The long-tail distribution of the visual world poses great challenges for deep learning based classification models on how to handle the class imbalance problem. Existing solutions usually involve class-balancing strategies, e.g., by loss…

计算机视觉与模式识别 · 计算机科学 2020-02-20 Bingyi Kang , Saining Xie , Marcus Rohrbach , Zhicheng Yan , Albert Gordo , Jiashi Feng , Yannis Kalantidis

Despite its success in self-supervised learning, contrastive learning is less studied in the supervised setting. In this work, we first use a set of pilot experiments to show that in the supervised setting, the cross-entropy loss objective…

计算与语言 · 计算机科学 2026-02-13 Liz Li , Wei Zhu

To balance effectiveness and efficiency in recommender systems, multi-stage pipelines commonly use lightweight two-tower models for large-scale candidate retrieval. However, the isolated two-tower architecture restricts representation…

信息检索 · 计算机科学 2026-04-22 Lixiang Wang , Shaoyun Shi , Peng Wang , Wenjin Wu , Peng Jiang

We propose a way to learn visual features that are compatible with previously computed ones even when they have different dimensions and are learned via different neural network architectures and loss functions. Compatible means that, if…

计算机视觉与模式识别 · 计算机科学 2021-01-07 Yantao Shen , Yuanjun Xiong , Wei Xia , Stefano Soatto