Zhou Z. Bottleneck Diagnosis in International Automotive Sales Funnels Using Gradient Boosting Trees: Evidence from Cross-Regional Team Efficiency Evaluation. Journal of Computer Technology & Applied Mathematics [Internet]. 2026 Jan. 5 [cited 2026 Jan. 19];3(1):11-8. Available from: https://www.suaspress.org/ojs/index.php/JCTAM/article/view/v3n1a02