Vol. 12 No. 4 (2026): In Progress
Open Access
Peer Reviewed

Evaluating AI Detection Performance Across Writing Modalities in Engineering Interaction

Authors

Meidi W. Lestari , Agustina Ginting , Harris Aminudin , C. Cholish , Ulfa Hasnita

DOI:

10.29303/jppipa.v12i4.9637

Published:

2026-04-30

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Abstract

This study proposes a conceptual framework for AI-based detection of handwritten and technical English writing in electrical engineering students, integrating multiple input modalities, including handwritten, typed, hybrid, and transcribed texts. A neural network–based detection system was evaluated using classification metrics and statistical analysis. The results demonstrate that detection accuracy varies significantly across modalities, ranging from 0.72 to 0.89, with typed and transcribed texts achieving higher consistency. Mean detection scores increased progressively from handwritten (0.41-0.50) to typed (0.52-0.58), hybrid (0.60-0.66), and transcribed texts (0.68-0.76), indicating the influence of text standardization. Variability was highest in handwritten and hybrid categories, with standard deviation reaching 0.10–0.11 and wider confidence intervals (e.g., 0.36-0.56), reflecting classification uncertainty. Heatmap analysis further shows that precision and recall in transcribed texts can exceed 0.85-0.89, while handwritten texts drop below 0.45 in some cases. The findings reveal that L2 writing characteristics and technical language significantly affect detection outcomes, leading to potential misclassification. This study highlights the need for context-aware AI detection systems that incorporate modality-specific features, ensuring fairness and reliability in engineering education.

Keywords:

AI detection Education Engineering L2 writing Writing modality

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Author Biographies

Meidi W. Lestari, Politeknik Negeri Medan

Author Origin : Indonesia

Agustina Ginting, Politeknik Negeri Medan

Author Origin : Indonesia

Harris Aminudin, Politeknik Negeri Medan

Author Origin : Indonesia

C. Cholish, Politeknik Negeri Medan

Author Origin : Indonesia

Ulfa Hasnita, Politeknik Negeri Medan

Author Origin : Indonesia

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How to Cite

Lestari, M. W., Ginting, A., Aminudin, H., Cholish, C., & Hasnita, U. (2026). Evaluating AI Detection Performance Across Writing Modalities in Engineering Interaction. Jurnal Penelitian Pendidikan IPA, 12(4), 392–402. https://doi.org/10.29303/jppipa.v12i4.9637