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Anomaly detection is crucial in industrial applications for identifying rare and unseen patterns to ensure system reliability. Traditional models, trained on a single class of normal data, struggle with real-world distributions where normal…

机器学习 · 统计学 2026-01-07 Jungi Lee , Jungkwon Kim , Chi Zhang , Sangmin Kim , Kwangsun Yoo , Seok-Joo Byun

Diffusion-based models have shown the merits of generating high-quality visual data while preserving better diversity in recent studies. However, such observation is only justified with curated data distribution, where the data samples are…

计算机视觉与模式识别 · 计算机科学 2023-06-16 Yiming Qin , Huangjie Zheng , Jiangchao Yao , Mingyuan Zhou , Ya Zhang

Communication scene recognition has been widely applied in practice, but using deep learning to address this problem faces challenges such as insufficient data and imbalanced data distribution. To address this, we designed a weighted loss…

计量经济学 · 经济学 2026-02-10 Jiasong Han , Yufei Feng , Xiaofeng Zhong

The use of multiple Decision Models (DMs) enables to enhance the accuracy in decisions and at the same time allows users to evaluate the confidence in decision making. In this paper we explore the ability of multiple DMs to learn from a…

人工智能 · 计算机科学 2008-05-27 Vitaly Schetinin , Dayou Li , Carsten Maple

Deep convolutional neural networks often perform poorly when faced with datasets that suffer from quantity imbalances and classification difficulties. Despite advances in the field, existing two-stage approaches still exhibit dataset bias…

机器学习 · 计算机科学 2023-03-16 Liang Xu , Yi Cheng , Fan Zhang , Bingxuan Wu , Pengfei Shao , Peng Liu , Shuwei Shen , Peng Yao , Ronald X. Xu

The difficulty to measure or predict species community composition at fine spatio-temporal resolution and over large spatial scales severely hampers our ability to understand species assemblages and take appropriate conservation measures.…

Deep neural networks (DNNs) for supervised learning can be viewed as a pipeline of a feature extractor (i.e. last hidden layer) and a linear classifier (i.e. output layer) that is trained jointly with stochastic gradient descent (SGD). In…

机器学习 · 计算机科学 2020-02-28 Xiangrui Li , Deng Pan , Xin Li , Dongxiao Zhu

In this paper, we examine the problem of missing data in high-dimensional datasets by taking into consideration the Missing Completely at Random and Missing at Random mechanisms, as well as theArbitrary missing pattern. Additionally, this…

人工智能 · 计算机科学 2016-07-04 Collins Leke , Tshilidzi Marwala

When trained with severely imbalanced data, deep neural networks often struggle to accurately recognize classes with only a few samples. Previous studies in long-tailed recognition have attempted to rebalance biased learning using known…

计算机视觉与模式识别 · 计算机科学 2024-12-23 Minseok Son , Inyong Koo , Jinyoung Park , Changick Kim

Decentralised learning enables the training of deep learning algorithms without centralising data sets, resulting in benefits such as improved data privacy, operational efficiency and the fostering of data ownership policies. However,…

机器学习 · 计算机科学 2024-12-23 Sebastian Niehaus , Ingo Roeder , Nico Scherf

Class imbalance is a common problem in the case of real-world object detection and classification tasks. Data of some classes is abundant making them an over-represented majority, and data of other classes is scarce, making them an…

计算机视觉与模式识别 · 计算机科学 2017-03-24 Salman H. Khan , Munawar Hayat , Mohammed Bennamoun , Ferdous Sohel , Roberto Togneri

Data acquisition in animal ecology is rapidly accelerating due to inexpensive and accessible sensors such as smartphones, drones, satellites, audio recorders and bio-logging devices. These new technologies and the data they generate hold…

Model learning from class imbalanced training data is a long-standing and significant challenge for machine learning. In particular, existing deep learning methods consider mostly either class balanced data or moderately imbalanced data in…

计算机视觉与模式识别 · 计算机科学 2018-05-01 Qi Dong , Shaogang Gong , Xiatian Zhu

In this paper, we propose a balancing training method to address problems in imbalanced data learning. To this end, we derive a new loss used in the balancing training phase that alleviates the influence of samples that cause an overfitted…

计算机视觉与模式识别 · 计算机科学 2021-10-14 Seulki Park , Jongin Lim , Younghan Jeon , Jin Young Choi

Large-scale, volunteer-collected datasets of community-identified natural world imagery like iNaturalist have enabled marked performance gains for fine-grained visual classification of species using machine learning methods. However, such…

计算机视觉与模式识别 · 计算机科学 2025-05-05 Elena Sierra , Lauren E. Gillespie , Salim Soltani , Moises Exposito-Alonso , Teja Kattenborn

Species distribution modeling (SDM) plays a crucial role in investigating habitat suitability and addressing various ecological issues. While likelihood analysis is commonly used to draw ecological conclusions, it has been observed that its…

统计方法学 · 统计学 2023-07-03 Yusuke Saigusa , Shinto Eguchi , Osamu Komori

Most classification models can be considered as the process of matching templates. However, when intra-class uncertainty/variability is not considered, especially for datasets containing unbalanced classes, this may lead to classification…

计算机视觉与模式识别 · 计算机科学 2021-04-13 He Zhu , Shan Yu

In dynamic and crowded environments, realistic pedestrian trajectory prediction remains a challenging task due to the complex nature of human motion and the mutual influences among individuals. Deep learning models have recently achieved…

计算机视觉与模式识别 · 计算机科学 2025-11-14 Ahmed Alia , Mohcine Chraibi , Armin Seyfried

The application of loss reweighting in modern deep learning presents a nuanced picture. While it fails to alter the terminal learning phase in overparameterized deep neural networks (DNNs) trained on high-dimensional datasets, empirical…

机器学习 · 计算机科学 2026-01-21 Yize Zhao , Christos Thrampoulidis

Understanding the relative contributions of environmental, spatial, and temporal processes in shaping species distribution is a central objective in ecology. Bayesian species distribution models (SDMs) offer a flexible framework for this…

应用统计 · 统计学 2026-03-11 Luisa Ferrari , Massimo Ventrucci , Alex Laini