REN, Tianyi. Research On Purchasing Behavior and Marketing Strategy Optimization of Commercial Medical Insurance Based on Unsupervised Learning Algorithms. International Journal of Computer Science and Information Technology, U.K., v. 4, n. 1, p. 110–120, 2024. DOI: 10.62051/ijcsit.v4n1.14. Disponível em: https://wepub.org/index.php/IJCSIT/article/view/3506. Acesso em: 30 apr. 2026.