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Physiological fatigue, a state of reduced cognitive and physical performance resulting from prolonged mental or physical exertion, poses significant challenges in various domains, including healthcare, aviation, transportation, and…

Human-Computer Interaction · Computer Science 2024-01-30 Ildar Rakhmatulin

This paper presents a machine learning framework for electricity demand forecasting across diverse geographical regions using the gradient boosting algorithm XGBoost. The model integrates historical electricity demand and comprehensive…

Machine Learning · Computer Science 2025-10-10 Kevin Steijn , Vamsi Priya Goli , Enrico Antonini

The recognition performance of biometric systems strongly depends on the quality of the compared biometric samples. Motivated by the goal of establishing a common understanding of face image quality and enabling system interoperability, the…

Computer Vision and Pattern Recognition · Computer Science 2024-02-09 Marcel Grimmer , Raymond N. J. Veldhuis , Christoph Busch

This work introduces an innovative method for estimating attention levels (cognitive load) using an ensemble of facial analysis techniques applied to webcam videos. Our method is particularly useful, among others, in e-learning…

Human-Computer Interaction · Computer Science 2024-08-15 Roberto Daza , Luis F. Gomez , Julian Fierrez , Aythami Morales , Ruben Tolosana , Javier Ortega-Garcia

The study proposes and tests a technique for automated emotion recognition through mouth detection via Convolutional Neural Networks (CNN), meant to be applied for supporting people with health disorders with communication skills issues…

Computer Vision and Pattern Recognition · Computer Science 2022-12-13 Giulio Biondi , Valentina Franzoni , Osvaldo Gervasi , Damiano Perri

This study is based on the Alzheimer's Disease Neuroimaging Initiative (ADNI) dataset and aims to explore early detection and disease progression in Alzheimer's disease (AD). We employ innovative data preprocessing strategies, including the…

Machine Learning · Computer Science 2024-02-14 Mingyang Li , Hongyu Liu , Yixuan Li , Zejun Wang , Yuan Yuan , Honglin Dai

This paper aims to explore models based on the extreme gradient boosting (XGBoost) approach for business risk classification. Feature selection (FS) algorithms and hyper-parameter optimizations are simultaneously considered during model…

Machine Learning · Statistics 2019-01-25 Yan Wang , Xuelei Sherry Ni

We propose a novel tree-based ensemble method, named XGBoostPP, to nonparametrically estimate the intensity of a point process as a function of covariates. It extends the use of gradient-boosted regression trees (Chen & Guestrin, 2016) to…

Methodology · Statistics 2024-02-01 C. Lu , Y. Guan , M. N. M. van Lieshout , G. Xu

Face aging is of great importance for cross-age recognition and entertainment-related applications. Recently, conditional generative adversarial networks (cGANs) have achieved impressive results for face aging. Existing cGANs-based methods…

Computer Vision and Pattern Recognition · Computer Science 2020-09-08 Haiping Zhu , Zhizhong Huang , Hongming Shan , Junping Zhang

This paper proposes a data driven model to predict the performance of a face recognition system based on image quality features. We model the relationship between image quality features (e.g. pose, illumination, etc.) and recognition…

Computer Vision and Pattern Recognition · Computer Science 2015-10-27 Abhishek Dutta , Raymond Veldhuis , Luuk Spreeuwers

The operating state of bearing directly affects the performance of rotating machinery and how to accurately and decisively extract features from the original vibration signal and recognize the faulty parts as early as possible is very…

Signal Processing · Electrical Eng. & Systems 2021-12-03 Haiquan Wang , Wenxuan Yue , Shengjun Wen , Xiaobin Xu , Menghao Su , Shanshan Zhang , Panpan Du

Retrieval-Augmented Generation (RAG) aims to reduce hallucination by grounding answers in retrieved evidence, yet hallucinated answers remain common even when relevant documents are available. Existing evaluations focus on answer-level or…

Computation and Language · Computer Science 2026-05-21 Passant Elchafei , Monorama Swain , Shahed Masoudian , Markus Schedl

Facial expression recognition has many potential applications which has attracted the attention of researchers in the last decade. Feature extraction is one important step in expression analysis which contributes toward fast and accurate…

Computer Vision and Pattern Recognition · Computer Science 2015-05-18 S. L. Happy , Aurobinda Routray

In this dissertation, we present a generative model to capture the relation between facial image quality features (like pose, illumination direction, etc) and face recognition performance. Such a model can be used to predict the performance…

Computer Vision and Pattern Recognition · Computer Science 2015-10-27 Abhishek Dutta

Heart failure affects millions of people worldwide, significantly reducing quality of life and leading to high mortality rates. Despite extensive research, the relationship between heart failure and mortality rates among ICU patients is not…

Machine Learning · Computer Science 2024-09-04 Negin Ashrafi , Armin Abdollahi , Jiahong Zhang , Maryam Pishgar

Antimicrobial resistance (AMR) is a growing global crisis projected to cause 10 million deaths per year by 2050. While the WHO Global Antimicrobial Resistance and Use Surveillance System (GLASS) provides standardized surveillance data…

Machine Learning · Computer Science 2026-02-27 Md Tanvir Hasan Turja

In this paper, we explore the correlation between different visual biometric modalities. For this purpose, we present an end-to-end deep neural network model that learns a mapping between the biometric modalities. Namely, our goal is to…

Computer Vision and Pattern Recognition · Computer Science 2020-06-04 Dogucan Yaman , Fevziye Irem Eyiokur , Hazım Kemal Ekenel

Challenges in the field of retinal prostheses motivate the development of retinal models to accurately simulate Retinal Ganglion Cells (RGCs) responses. The goal of retinal prostheses is to enable blind individuals to solve complex,…

Image and Video Processing · Electrical Eng. & Systems 2022-02-08 Nikolas Papadopoulos , Nikos Melanitis , Antonio Lozano , Cristina Soto-Sanchez , Eduardo Fernandez , Konstantina S Nikita

In this article we propose a method for the recognition of faces with different facial expressions. For recognition we extract feature vectors by using log-Gabor filters of multiple orientations and scales. Using sliding window algorithm…

Computer Vision and Pattern Recognition · Computer Science 2007-05-23 Vytautas Perlibakas

In this paper, we address the problem of face recognition with masks. Given the global health crisis caused by COVID-19, mouth and nose-covering masks have become an essential everyday-clothing-accessory. This sanitary measure has put the…

Computer Vision and Pattern Recognition · Computer Science 2021-04-22 David Montero , Marcos Nieto , Peter Leskovsky , Naiara Aginako