Asmaa Mohammad S Balamash, Ghadah Aldabbagh and Samar Alkhuraiji
Adv. Artif. Intell. Mach. Learn., 5 (4):4575-4593
1. Asmaa Mohammad S Balamash: King Abdulaziz University
2. Ghadah Aldabbagh: Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah, Saudi Arabia
3. Samar Alkhuraiji: Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah, Saudi Arabia
DOI: 10.54364/AAIML.2025.54254
Article History: Received on: 04-Aug-25, Accepted on: 07-Nov-25, Published on: 14-Nov-25
Corresponding Author: Asmaa Mohammad S Balamash
Email: abalamash0003@stu.kau.edu.sa
Citation: Asmaa Mohammad Balamas, et al. Epileptic Seizure Prediction on CHB-MIT EEG Using Soft Fusion Post-Processing of Top-K Predictions with CNN Architectures. Advances in Artificial Intelligence and Machine Learning. 2025;5(4):254. https://dx.doi.org/10.54364/AAIML.2025.54254
Epileptic seizure prediction requires not only accurate detection but also reliable
alarm generation to be clinically meaningful. We propose a Soft Fusion method
based on Top-K averaging of preictal probabilities as a post-processing step to stabi-
lize model outputs. Using the CHB-MIT scalp EEG dataset, we evaluate three back-
bones—a baseline CNN, CNN with Convolutional Block Attention Module (CBAM),
and CNN with Long Short-Term Memory (LSTM)—with STFT spectrogram inputs
under a 5 min Seizure Prediction Horizon (SPH) and 30 min Seizure Occurrence Pe-
riod (SOP). Across models, Soft Fusion improved sensitivity (macro-average up to
92.8%) while reducing false prediction rates to about 0.8 events per hour (≈20/day),
consistently outperforming the conventional k-of-n (Hard Fusion) rule. Although
still above ideal clinical tolerance levels, these results highlight that post-processing
can be as critical as architectural design in seizure prediction. Limitations include
retrospective single-dataset evaluation and per-patient thresholding. Nonetheless,
Soft Fusion represents a promising step toward more reliable and clinically usable
seizure prediction systems.