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Contrastive learning is among the most popular and powerful approaches for self-supervised representation learning, where the goal is to map semantically similar samples close together while separating dissimilar ones in the latent space.…

机器学习 · 统计学 2025-12-03 Ali Alvandi , Mina Rezaei

Miscalibration - a mismatch between a model's confidence and its correctness - of Deep Neural Networks (DNNs) makes their predictions hard to rely on. Ideally, we want networks to be accurate, calibrated and confident. We show that, as…

Deep learning methodologies have been employed in several different fields, with an outstanding success in image recognition applications, such as material quality control, medical imaging, autonomous driving, etc. Deep learning models rely…

计算机视觉与模式识别 · 计算机科学 2022-03-11 Saul Calderon-Ramirez , Shengxiang Yang , David Elizondo

Deep neural networks, trained with large amount of labeled data, can fail to generalize well when tested with examples from a \emph{target domain} whose distribution differs from the training data distribution, referred as the \emph{source…

Classifiers trained with class-imbalanced data are known to perform poorly on test data of the "minor" classes, of which we have insufficient training data. In this paper, we investigate learning a ConvNet classifier under such a scenario.…

机器学习 · 计算机科学 2022-07-12 Han-Jia Ye , Hong-You Chen , De-Chuan Zhan , Wei-Lun Chao

It is vital to learn effective policies that can be transferred to different domains with dynamics discrepancies in reinforcement learning (RL). In this paper, we consider dynamics adaptation settings where there exists dynamics mismatch…

机器学习 · 计算机科学 2024-05-27 Jiafei Lyu , Chenjia Bai , Jingwen Yang , Zongqing Lu , Xiu Li

Large-scale classification of data where classes are structurally organized in a hierarchy is an important area of research. Top-down approaches that exploit the hierarchy during the learning and prediction phase are efficient for large…

机器学习 · 计算机科学 2017-06-06 Azad Naik , Huzefa Rangwala

Machine learning models are typically deployed in a test setting that differs from the training setting, potentially leading to decreased model performance because of domain shift. If we could estimate the performance that a pre-trained…

计算机视觉与模式识别 · 计算机科学 2022-07-21 Zeju Li , Konstantinos Kamnitsas , Mobarakol Islam , Chen Chen , Ben Glocker

In the context of supervised statistical learning, it is typically assumed that the training set comes from the same distribution that draws the test samples. When this is not the case, the behavior of the learned model is unpredictable and…

机器学习 · 计算机科学 2022-05-12 Antonio-Javier Gallego , Jorge Calvo-Zaragoza , Robert B. Fisher

Domain shift is a well known problem where a model trained on a particular domain (source) does not perform well when exposed to samples from a different domain (target). Unsupervised methods that can adapt to domain shift are highly…

计算机视觉与模式识别 · 计算机科学 2021-08-04 Botos Csaba , Xiaojuan Qi , Arslan Chaudhry , Puneet Dokania , Philip Torr

Despite remarkable success in a variety of applications, it is well-known that deep learning can fail catastrophically when presented with out-of-distribution data. Toward addressing this challenge, we consider the domain generalization…

机器学习 · 统计学 2021-11-16 Alexander Robey , George J. Pappas , Hamed Hassani

Decentralized training of deep learning models enables on-device learning over networks, as well as efficient scaling to large compute clusters. Experiments in earlier works reveal that, even in a data-center setup, decentralized training…

机器学习 · 计算机科学 2021-06-21 Lingjing Kong , Tao Lin , Anastasia Koloskova , Martin Jaggi , Sebastian U. Stich

Neural networks are susceptible to adversarial perturbations that are transferable across different models. In this paper, we introduce a novel model alignment technique aimed at improving a given source model's ability in generating…

机器学习 · 计算机科学 2024-07-18 Avery Ma , Amir-massoud Farahmand , Yangchen Pan , Philip Torr , Jindong Gu

Classifiers trained on given databases perform poorly when tested on data acquired in different settings. This is explained in domain adaptation through a shift among distributions of the source and target domains. Attempts to align them…

计算机视觉与模式识别 · 计算机科学 2017-11-29 Fabio Maria Carlucci , Lorenzo Porzi , Barbara Caputo , Elisa Ricci , Samuel Rota Bulò

A classifier trained on a dataset seldom works on other datasets obtained under different conditions due to domain shift. This problem is commonly addressed by domain adaptation methods. In this work we introduce a novel deep learning…

计算机视觉与模式识别 · 计算机科学 2020-02-18 Subhankar Roy , Aliaksandr Siarohin , Enver Sangineto , Samuel Rota Bulo , Nicu Sebe , Elisa Ricci

The well known domain shift issue causes model performance to degrade when deployed to a new target domain with different statistics to training. Domain adaptation techniques alleviate this, but need some instances from the target domain to…

机器学习 · 计算机科学 2019-06-11 Yiying Li , Yongxin Yang , Wei Zhou , Timothy M. Hospedales

Drift in machine learning refers to the phenomenon where the statistical properties of data or context, in which the model operates, change over time leading to a decrease in its performance. Therefore, maintaining a constant monitoring…

计算与语言 · 计算机科学 2023-09-08 Saeed Khaki , Akhouri Abhinav Aditya , Zohar Karnin , Lan Ma , Olivia Pan , Samarth Marudheri Chandrashekar

Benchmarks underpin how progress in large language models (LLMs) is measured and trusted. Yet our analyses reveal that apparent convergence in benchmark accuracy can conceal deep epistemic divergence. Using two major reasoning benchmarks -…

计算与语言 · 计算机科学 2026-02-13 Eddie Yang , Dashun Wang

Anomaly Detection is an important problem within computer vision, having variety of real-life applications. Yet, the current set of solutions to this problem entail known, systematic shortcomings. Specifically, contemporary surface Anomaly…

计算机视觉与模式识别 · 计算机科学 2024-10-10 Riya Sadrani , Hrishikesh Sharma , Ayush Bachan

Recent advances in unsupervised domain adaptation mainly focus on learning shared representations by global distribution alignment without considering class information across domains. The neglect of class information, however, may lead to…

计算机视觉与模式识别 · 计算机科学 2019-04-16 Chao Chen , Zhihang Fu , Zhihong Chen , Zhaowei Cheng , Xinyu Jin , Xian-Sheng Hua