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Distracted driving is one of the major reasons for vehicle accidents. Therefore, detecting distracted driving behaviors is of paramount importance to reduce the millions of deaths and injuries occurring worldwide. Distracted or anomalous…

计算机视觉与模式识别 · 计算机科学 2022-05-02 Shehroz S. Khan , Ziting Shen , Haoying Sun , Ax Patel , Ali Abedi

The discrepancy between in-distribution (ID) and out-of-distribution (OOD) samples can lead to \textit{distributional vulnerability} in deep neural networks, which can subsequently lead to high-confidence predictions for OOD samples. This…

机器学习 · 计算机科学 2023-10-03 Zhilin Zhao , Longbing Cao , Kun-Yu Lin

Time-series anomaly detection deals with the problem of detecting anomalous timesteps by learning normality from the sequence of observations. However, the concept of normality evolves over time, leading to a "new normal problem", where the…

机器学习 · 计算机科学 2024-01-23 Dongmin Kim , Sunghyun Park , Jaegul Choo

Unsupervised contrastive learning has achieved outstanding success, while the mechanism of contrastive loss has been less studied. In this paper, we concentrate on the understanding of the behaviours of unsupervised contrastive loss. We…

机器学习 · 计算机科学 2021-03-23 Feng Wang , Huaping Liu

Deep neural networks are highly susceptible to learning biases in visual data. While various methods have been proposed to mitigate such bias, the majority require explicit knowledge of the biases present in the training data in order to…

计算机视觉与模式识别 · 计算机科学 2024-06-05 Rebecca S Stone , Nishant Ravikumar , Andrew J Bulpitt , David C Hogg

Recent unsupervised domain adaptation (UDA) methods have shown great success in addressing classical domain shifts (e.g., synthetic-to-real), but they still suffer under complex shifts (e.g. geographical shift), where both the background…

计算机视觉与模式识别 · 计算机科学 2025-08-11 Mattia Litrico , Mario Valerio Giuffrida , Sebastiano Battiato , Devis Tuia

Artificial intelligence methods show great promise in increasing the quality and speed of work with large astronomical datasets, but the high complexity of these methods leads to the extraction of dataset-specific, non-robust features.…

星系天体物理 · 物理学 2023-03-23 A. Ćiprijanović , A. Lewis , K. Pedro , S. Madireddy , B. Nord , G. N. Perdue , S. M. Wild

We propose an approach for unsupervised adaptation of object detectors from label-rich to label-poor domains which can significantly reduce annotation costs associated with detection. Recently, approaches that align distributions of source…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Kuniaki Saito , Yoshitaka Ushiku , Tatsuya Harada , Kate Saenko

Radio Frequency (RF) device fingerprinting has been recognized as a potential technology for enabling automated wireless device identification and classification. However, it faces a key challenge due to the domain shift that could arise…

机器学习 · 计算机科学 2024-03-08 Jun Chen , Weng-Keen Wong , Bechir Hamdaoui

Domain adaptation is an important technique to alleviate performance degradation caused by domain shift, e.g., when training and test data come from different domains. Most existing deep adaptation methods focus on reducing domain shift by…

机器学习 · 计算机科学 2019-06-25 Jun Wen , Nenggan Zheng , Junsong Yuan , Zhefeng Gong , Changyou Chen

Real-world machine learning applications often face simultaneous covariate and semantic shifts, challenging traditional domain generalization and out-of-distribution (OOD) detection methods. We introduce Meta-learned Across Domain…

机器学习 · 计算机科学 2024-11-06 Haoliang Wang , Chen Zhao , Feng Chen

The capability to detect objects is a core part of autonomous driving. Due to sensor noise and incomplete data, perfectly detecting and localizing every object is infeasible. Therefore, it is important for a detector to provide the amount…

计算机视觉与模式识别 · 计算机科学 2020-02-04 Gregory P. Meyer , Niranjan Thakurdesai

Uncertainty estimation aims to evaluate the confidence of a trained deep neural network. However, existing uncertainty estimation approaches rely on low-dimensional distributional assumptions and thus suffer from the high dimensionality of…

机器学习 · 计算机科学 2023-10-26 Tsai Hor Chan , Kin Wai Lau , Jiajun Shen , Guosheng Yin , Lequan Yu

Deep anomaly detection methods learn representations that separate between normal and anomalous images. Although self-supervised representation learning is commonly used, small dataset sizes limit its effectiveness. It was previously shown…

计算机视觉与模式识别 · 计算机科学 2022-11-29 Tal Reiss , Yedid Hoshen

Detecting out-of-distribution (OOD) samples plays a key role in open-world and safety-critical applications such as autonomous systems and healthcare. Recently, self-supervised representation learning techniques (via contrastive learning…

计算机视觉与模式识别 · 计算机科学 2021-10-12 Sina Mohseni , Arash Vahdat , Jay Yadawa

Data augmentation plays a critical role in generating high-quality positive and negative pairs necessary for effective contrastive learning. However, common practices involve using a single augmentation policy repeatedly to generate…

计算机视觉与模式识别 · 计算机科学 2024-05-14 Nazim Bendib

A recent popular approach to out-of-distribution (OOD) detection is based on a self-supervised learning technique referred to as contrastive learning. There are two main variants of contrastive learning, namely instance and class…

机器学习 · 计算机科学 2022-11-08 Nawid Keshtmand , Raul Santos-Rodriguez , Jonathan Lawry

Trained classification models can unintentionally lead to biased representations and predictions, which can reinforce societal preconceptions and stereotypes. Existing debiasing methods for classification models, such as adversarial…

计算与语言 · 计算机科学 2021-09-23 Aili Shen , Xudong Han , Trevor Cohn , Timothy Baldwin , Lea Frermann

Despite significant progress in Anomaly Detection (AD), the robustness of existing detection methods against adversarial attacks remains a challenge, compromising their reliability in critical real-world applications such as autonomous…

计算机视觉与模式识别 · 计算机科学 2025-01-28 Hossein Mirzaei , Mojtaba Nafez , Jafar Habibi , Mohammad Sabokrou , Mohammad Hossein Rohban

How to improve discriminative feature learning is central in classification. Existing works address this problem by explicitly increasing inter-class separability and intra-class similarity, whether by constructing positive and negative…

机器学习 · 计算机科学 2024-08-21 Qingsong Zhao , Yi Wang , Shuguang Dou , Chen Gong , Yin Wang , Cairong Zhao