Oktavi Maharani, A.; Rimawati, E.; Wulandari, R.; Jaya Kusuma, E.; Shidik, G. F. . K-Means Clustering for Profiling BPJS Health Traders in Semarang by Ability To Pay (ATP) and Willingness To Pay (WTP). Proceeding Public Health 2025, 1, 16-24.