Haji Ebrahim Tehrani M, Safarnejad Borujeni A, Hashemigohar M, Zafari S, Alidadi H. A Hybrid Approach Based on a Memory-Instance–Based Gated Transformer (MIGT) Algorithm and Metaheuristic Optimization for Portfolio Management with the Aim of Return Optimization and Risk Control. JRMDE. Published online May 1, 2026:1-20. Accessed February 19, 2026. https://journalrmde.com/index.php/jrmde/article/view/255