M. R. Ardani and A. W. Utami, “Web-Based Umrah Departure Quota Prediction Application UsingaMachineLearning Approach (Case Study: PT. Rahmatan BerkahWisata)”, J. Emerg. Inf. Syst. Bus. Intell. (JEISBI), vol. 7, no. 3, pp. 451–461, Jun. 2026.