Haryani, Calandra Alencia, et al. “Sentiment Analysis of User Satisfaction Towards Sales Promotion of Gojek Application Service Using Support Vector Machine (SVM)”. Ultima InfoSys : Jurnal Ilmu Sistem Informasi, vol. 14, no. 2, Dec. 2023, pp. 66-70, doi:10.31937/si.v14i2.3398.