Khadijat T. Ladoja

Work place: Department of Computer Science, University of Ibadan, Ibadan, Nigeria

E-mail: kt.bamigbade@ui.edu.ng

Website: https://orcid.org/0000-0001-9479-5825

Research Interests:

Biography

Khadijat Ladoja received her B.Sc. degree in Computer Science from the University of Ilorin, Nigeria, in 2010. She then completed her M.Sc. and Ph.D. degrees in Computer Science at the University of Ibadan, Nigeria, in 2014 and 2021, respectively. Currently, she is a faculty member in the Department of Computer Science at the University of Ibadan, with over five years of teaching and research experience. Her research focuses on Natural Language Processing, specifically targeting language models for low-resource Nigerian languages and computer vision. Dr. Ladoja’s dedication to teaching and research has earned her the fellowship of the ”Empowering the Teachers” program at MIT, USA, and recognition as one of the Top 200 young researchers by the Heidelberg Laureate Foundation (HLF).

Author Articles
Racial Bias in Facial Expression Recognition Datasets: Evaluating the Impact on Model Performance

By Ridwan O. Bello Joseph D. Akinyemi Khadijat T. Ladoja Oladeji P. Akomolafe

DOI: https://doi.org/10.5815/ijem.2025.01.01, Pub. Date: 8 Feb. 2025

Despite extensive research efforts in Facial Expression Recognition (FER), achieving consistent performance across diverse datasets remains challenging. This challenge stems from variations in imaging conditions such as head pose, illumination, and background, as well as demographic factors like age, gender, and ethnicity. This paper introduces NIFER, a novel facial expression database designed to address this issue by enhancing racial diversity in existing datasets. NIFER comprises 3,481 images primarily featuring individuals with dark skin tones, collected in real-world settings. These images underwent preprocessing through face detection and histogram equalization before being categorized into five basic facial expressions using a deep learning model. Experiments conducted on both NIFER and FER-2013 datasets revealed a decrease in performance in multiracial FER compared to single-race FER, underscoring the importance of incorporating diverse racial representations in FER datasets to ensure accurate recognition across various ethnicities.

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