ABDUL KALIB, Z. I., Begum, A., & Redwan, S. M. (2026). A Parsimonious and Authentically Validated Feature Subgroup for Questionnaire-Based Insomnia Classification: A Multi-Method Reduction Benchmarked Across Machine Learning and Deep Learning Models. International Journal of Advanced Communication Technology (IJACT), 5. https://doi.org/10.58915/ijact.v5.2026.3316