Ifriza, Y.N., Sanusi, R.N.M., Febriyanto, H. and Kamaruddin, A. 2025. Optimization CatBoost using GridSearchCV for Sentiment Analysis Customer Reviews in Digital Transportation Industry . TIERS Information Technology Journal. 6, 2 (Dec. 2025), 205-216. DOI:https://doi.org/10.38043/tiers.v6i2.7201.