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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

Data in real-world object detection often exhibits the long-tailed distribution. Existing solutions tackle this problem by mitigating the competition between the head and tail categories. However, due to the scarcity of training samples,…

计算机视觉与模式识别 · 计算机科学 2022-10-12 Bo Li , Yongqiang Yao , Jingru Tan , Xin Lu , Fengwei Yu , Ye Luo , Jianwei Lu

Despite impressive accuracy, deep neural networks are often miscalibrated and tend to overly confident predictions. Recent techniques like temperature scaling (TS) and label smoothing (LS) show effectiveness in obtaining a well-calibrated…

计算机视觉与模式识别 · 计算机科学 2021-09-14 Mobarakol Islam , Lalithkumar Seenivasan , Hongliang Ren , Ben Glocker

Long-tailed class distributions are pervasive in multi-class medical datasets and pose significant challenges for deep learning models which typically underperform on tail classes with limited samples. This limitation is particularly…

计算机视觉与模式识别 · 计算机科学 2026-05-06 Jiaxiang Jiang , Mahesh Subedar , Omesh Tickoo

Domain adaptive active learning is leading the charge in label-efficient training of neural networks. For semantic segmentation, state-of-the-art models jointly use two criteria of uncertainty and diversity to select training labels,…

计算机视觉与模式识别 · 计算机科学 2023-11-27 Marc Schachtsiek , Simone Rossi , Thomas Hannagan

Natural data are often long-tail distributed over semantic classes. Existing recognition methods tackle this imbalanced classification by placing more emphasis on the tail data, through class re-balancing/re-weighting or ensembling over…

计算机视觉与模式识别 · 计算机科学 2022-05-03 Xudong Wang , Long Lian , Zhongqi Miao , Ziwei Liu , Stella X. Yu

In speech deepfake detection (SDD), data augmentation (DA) is commonly used to improve model generalization across varied speech conditions and spoofing attacks. However, during training, the backpropagated gradients from original and…

声音 · 计算机科学 2026-01-29 Duc-Tuan Truong , Tianchi Liu , Junjie Li , Ruijie Tao , Kong Aik Lee , Eng Siong Chng

Generative adversarial networks (GANs) have made remarkable achievements in synthesizing images in recent years. Typically, training GANs requires massive data, and the performance of GANs deteriorates significantly when training data is…

计算机视觉与模式识别 · 计算机科学 2025-02-04 Mengping Yang , Zhe Wang , Ziqiu Chi , Dongdong Li , Wenli Du

Unsupervised pre-training has led to much recent progress in natural language understanding. In this paper, we study self-training as another way to leverage unlabeled data through semi-supervised learning. To obtain additional data for a…

计算与语言 · 计算机科学 2020-10-06 Jingfei Du , Edouard Grave , Beliz Gunel , Vishrav Chaudhary , Onur Celebi , Michael Auli , Ves Stoyanov , Alexis Conneau

Recently, utilizing large language models (LLMs) for metaphor detection has achieved promising results. However, these methods heavily rely on the capabilities of closed-source LLMs, which come with relatively high inference costs and…

计算与语言 · 计算机科学 2025-03-04 Kaidi Jia , Yanxia Wu , Ming Liu , Rongsheng Li

Unsupervised domain adaptation (UDA) is important for applications where large scale annotation of representative data is challenging. For semantic segmentation in particular, it helps deploy on real "target domain" data models that are…

计算机视觉与模式识别 · 计算机科学 2019-08-20 Tuan-Hung Vu , Himalaya Jain , Maxime Bucher , Matthieu Cord , Patrick Pérez

This paper proposes an incremental solution to Fast Subclass Discriminant Analysis (fastSDA). We present an exact and an approximate linear solution, along with an approximate kernelized variant. Extensive experiments on eight image…

机器学习 · 计算机科学 2020-02-12 Kateryna Chumachenko , Jenni Raitoharju , Moncef Gabbouj , Alexandros Iosifidis

Instance segmentation has witnessed a remarkable progress on class-balanced benchmarks. However, they fail to perform as accurately in real-world scenarios, where the category distribution of objects naturally comes with a long tail.…

计算机视觉与模式识别 · 计算机科学 2021-06-18 Jiaqi Wang , Wenwei Zhang , Yuhang Zang , Yuhang Cao , Jiangmiao Pang , Tao Gong , Kai Chen , Ziwei Liu , Chen Change Loy , Dahua Lin

Long-tailed distributions in image recognition pose a considerable challenge due to the severe imbalance between a few dominant classes with numerous examples and many minority classes with few samples. Recently, the use of large generative…

计算机视觉与模式识别 · 计算机科学 2024-08-30 Guangxi Li , Yinsheng Song , Mingkai Zheng

Existing data augmentation in self-supervised learning, while diverse, fails to preserve the inherent structure of natural images. This results in distorted augmented samples with compromised semantic information, ultimately impacting…

计算机视觉与模式识别 · 计算机科学 2024-11-05 Renan A. Rojas-Gomez , Karan Singhal , Ali Etemad , Alex Bijamov , Warren R. Morningstar , Philip Andrew Mansfield

Recent advances in data augmentation enable one to translate images by learning the mapping between a source domain and a target domain. Existing methods tend to learn the distributions by training a model on a variety of datasets, with…

计算机视觉与模式识别 · 计算机科学 2023-01-18 Boyi Li , Yin Cui , Tsung-Yi Lin , Serge Belongie

Recently computer-aided diagnosis has demonstrated promising performance, effectively alleviating the workload of clinicians. However, the inherent sample imbalance among different diseases leads algorithms biased to the majority…

计算机视觉与模式识别 · 计算机科学 2025-02-10 Li Pan , Yupei Zhang , Qiushi Yang , Tan Li , Zhen Chen

We present a novel approach for unsupervised domain adaptation (UDA) for natural images. A commonly-used objective for UDA schemes is to enhance domain alignment in representation space even if there is a domain shift in the input space.…

计算机视觉与模式识别 · 计算机科学 2025-06-24 Ravi Kant Gupta , Shounak Das , Amit Sethi

Deep learning has revolutionized the performance of classification, but meanwhile demands sufficient labeled data for training. Given insufficient data, while many techniques have been developed to help combat overfitting, the challenge…

计算机视觉与模式识别 · 计算机科学 2018-09-05 Xiaofeng Zhang , Zhangyang Wang , Dong Liu , Qing Ling

Data augmentation is often used to enlarge datasets with synthetic samples generated in accordance with the underlying data distribution. To enable a wider range of augmentations, we explore negative data augmentation strategies (NDA)that…

计算机视觉与模式识别 · 计算机科学 2021-02-11 Abhishek Sinha , Kumar Ayush , Jiaming Song , Burak Uzkent , Hongxia Jin , Stefano Ermon