“Optimizing Multi-Channel AI Advertising Budget Allocation and ROI Prediction in Cross-Border E-Commerce: A Machine Learning Approach for North American and Southeast Asian Markets” (2026) International Journal of Computer Science and Engineering, 1(04), pp. 59–66. Available at: https://iakgvllc.org/index.php/IJCES/article/view/45 (Accessed: 16 July 2026).