Al Danny Rian Wibisono, Syahrul Hidayat, Humam Maulana Tsubasanofa Ramadhan and Eva Yulia Puspaningrum 2023. Comparison of K-Nearest Neighbor and Decision Tree Methods using Principal Component Analysis Technique in Heart Disease Classification. Indonesian Journal of Data and Science. 4, 2 (Jul. 2023), 87-96. DOI:https://doi.org/10.56705/ijodas.v4i2.70.