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This paper proposes a new approach for face verification, where a pair of images needs to be classified as belonging to the same person or not. This problem is relatively new and not well-explored in the literature. Current methods mostly…

Computer Vision and Pattern Recognition · Computer Science 2013-10-01 Dong Zhang , Omar Oreifej , Mubarak Shah

In this paper, we present a multi-modal online person verification system using both speech and visual signals. Inspired by neuroscientific findings on the association of voice and face, we propose an attention-based end-to-end neural…

Computer Vision and Pattern Recognition · Computer Science 2018-11-28 Suwon Shon , Tae-Hyun Oh , James Glass

The fifth Affective Behavior Analysis in-the-wild (ABAW) competition has multiple challenges such as Valence-Arousal Estimation Challenge, Expression Classification Challenge, Action Unit Detection Challenge, Emotional Reaction Intensity…

Computer Vision and Pattern Recognition · Computer Science 2023-03-20 Darshan Gera , Badveeti Naveen Siva Kumar , Bobbili Veerendra Raj Kumar , S Balasubramanian

In this article, we derive concentration inequalities for the cross-validation estimate of the generalization error for stable predictors in the context of risk assessment. The notion of stability has been first introduced by \cite{DEWA79}…

Machine Learning · Statistics 2010-11-24 Matthieu Cornec

Cross-validation is a widely-used technique to estimate prediction error, but its behavior is complex and not fully understood. Ideally, one would like to think that cross-validation estimates the prediction error for the model at hand, fit…

Methodology · Statistics 2024-03-12 Stephen Bates , Trevor Hastie , Robert Tibshirani

Facial action units (AUs) detection is fundamental to facial expression analysis. As AU occurs only in a small area of the face, region-based learning has been widely recognized useful for AU detection. Most region-based studies focus on a…

Computer Vision and Pattern Recognition · Computer Science 2020-02-12 Yao Xia

The visualization and detection of anomalies (outliers) are of crucial importance to many fields, particularly cybersecurity. Several approaches have been proposed in these fields, yet to the best of our knowledge, none of them has…

Machine Learning · Computer Science 2022-08-19 Waleed A. Yousef , Issa Traore , William Briguglio

Despite the extensive literature on training loss functions, the evaluation of generalization on the validation set remains underexplored. In this work, we conduct a systematic empirical and statistical study of how the validation criterion…

Machine Learning · Computer Science 2026-02-26 Andrea Apicella , Francesco Isgrò , Andrea Pollastro , Roberto Prevete

Leaderboard scores on public benchmarks have been steadily rising and converging, with many frontier language models now separated by only marginal differences. However, these scores often fail to match users' day to day experience, because…

Artificial Intelligence · Computer Science 2026-02-05 Yiliang Song , Hongjun An , Jiangong Xiao , Haofei Zhao , Jiawei Shao , Xuelong Li

We train an identity verification architecture and evaluate modifications to the part of the model that combines audio and visual representations, including in scenarios where one input is missing in either of two examples to be compared.…

Machine Learning · Computer Science 2023-11-10 Daniel Claborne , Eric Slyman , Karl Pazdernik

The most existing studies in the facial age estimation assume training and test images are captured under similar shooting conditions. However, this is rarely valid in real-world applications, where training and test sets usually have…

Computer Vision and Pattern Recognition · Computer Science 2020-10-28 Ali Akbari , Muhammad Awais , Zhen-Hua Feng , Ammarah Farooq , Josef Kittler

Pseudo-LiDAR-based methods for monocular 3D object detection have received considerable attention in the community due to the performance gains exhibited on the KITTI3D benchmark, in particular on the commonly reported validation split.…

Computer Vision and Pattern Recognition · Computer Science 2021-05-14 Andrea Simonelli , Samuel Rota Bulò , Lorenzo Porzi , Peter Kontschieder , Elisa Ricci

Real-world face recognition systems are vulnerable to both physical presentation attacks (PAs) and digital forgery attacks (DFs). We aim to achieve comprehensive protection of biometric data by implementing a unified physical-digital…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Jiabao Guo , Yadian Wang , Hui Ma , Yuhao Fu , Ju Jia , Hui Liu , Shengeng Tang , Lechao Cheng , Yunfeng Diao , Ajian Liu

Object detection has advanced significantly in the closed-set setting, but real-world deployment remains limited by two challenges: poor generalization to unseen categories and insufficient robustness under adverse conditions. Prior…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Siheng Wang , Zhengdao Li , Yanshu Li , Canran Xiao , Haibo Zhan , Zhengtao Yao , Xuzhi Zhang , Jiale Kang , Linshan Li , Weiming Liu , Zhikang Dong , Jifeng Shen , Junhao Dong , Qiang Sun , Piotr Koniusz

It is common practice of the outlier mining community to repurpose classification datasets toward evaluating various detection models. To that end, often a binary classification dataset is used, where samples from one of the classes is…

Machine Learning · Computer Science 2021-05-20 Lingxiao Zhao , Leman Akoglu

I develop an algorithm to produce the piecewise quadratic that computes leave-one-out cross-validation for the lasso as a function of its hyperparameter. The algorithm can be used to find exact hyperparameters that optimize leave-one-out…

Machine Learning · Statistics 2025-11-04 Ryan Burn

Audio deepfake detection (ADD) models are commonly evaluated using datasets that combine multiple synthesizers, with performance reported as a single Equal Error Rate (EER). However, this approach disproportionately weights synthesizers…

Sound · Computer Science 2025-09-12 Chin Yuen Kwok , Jia Qi Yip , Zhen Qiu , Chi Hung Chi , Kwok Yan Lam

Multi-modal based speech separation has exhibited a specific advantage on isolating the target character in multi-talker noisy environments. Unfortunately, most of current separation strategies prefer a straightforward fusion based on…

Sound · Computer Science 2022-03-08 Junwen Xiong , Peng Zhang , Lei Xie , Wei Huang , Yufei Zha , Yanning Zhang

Snow is one of the toughest adverse weather conditions for object detection (OD). Currently, not only there is a lack of snowy OD datasets to train cutting-edge detectors, but also these detectors have difficulties learning latent…

Computer Vision and Pattern Recognition · Computer Science 2022-06-06 Qiqi Ding , Peng Li , Xuefeng Yan , Ding Shi , Luming Liang , Weiming Wang , Haoran Xie , Jonathan Li , Mingqiang Wei

Face Anti-Spoofing (FAS) remains challenging due to the requirement for robust domain generalization across unseen environments. While recent trends leverage Vision-Language Models (VLMs) for semantic supervision, these multimodal…

Computer Vision and Pattern Recognition · Computer Science 2026-04-22 Mika Feng , Pierre Gallin-Martel , Koichi Ito , Takafumi Aoki