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All Journal Artificial Intelligence Systems and Its Applications (AISA)
Kafitra Marna Ibrahim
Universitas Muhammadiyah Semarang, Indonesia
Computer Science & IT

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Multi-Objective Bio-Inspired Hyperparameter Optimization for Trustworthy Brain Tumor MRI Classification Using Calibration-Aware CNN Models Kafitra Marna Ibrahim; Zaky Zaujan Jayaputra
Artificial Intelligence Systems and Its Applications Vol. 1 No. 2 (2025): Vol. 1, No. 2, December 2025
Publisher : CV Cognispectra Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65917/aisa.v1i2.45

Abstract

Automated brain tumor classification from magnetic resonance imaging (MRI) has become an essential component in advancing computer-aided diagnosis. However, many deep learning approaches prioritize accuracy alone while overlooking two key requirements for real-world medical deployment: the reliability of predicted confidence scores and the computational efficiency required for clinical integration. This study proposes a multi-objective bio-inspired hyperparameter optimization framework to produce convolutional neural network (CNN) models that are accurate, well-calibrated, and computationally efficient. The model is optimized using a Multi-Objective Particle Swarm Optimization (MOPSO) algorithm that jointly minimizes validation error, Expected Calibration Error (ECE), and inference latency. Experiments were conducted on a four-class Brain Tumor MRI dataset, and the optimized configuration achieved a test accuracy of 95 percent, an ECE of 1.48 percent, and a sub-millisecond inference latency of 0.88 milliseconds per sample. Grad-CAM visualizations further confirm that the model’s decisions are guided by clinically relevant tumor regions. The results demonstrate that multi-objective hyperparameter optimization offers a robust pathway for developing trustworthy, efficient, and interpretable artificial intelligence systems for medical imaging applications.
Co-Authors Zaky Zaujan Jayaputra