Istiadi, Istiadi, Aviv Yuniar Rahman, and Alif Dio Raka Wisnu. 2023. “Identification of Tempe Fermentation Maturity Using Principal Component Analysis and K-Nearest Neighbor”. Sinkron : Jurnal Dan Penelitian Teknik Informatika 7 (1):286-94. https://doi.org/10.33395/sinkron.v8i1.12006.