Rahayu, A. N. S., Hermanto, T. I. and Nugroho, I. M. (2022) “SENTIMENT ANALYSIS USING K-NEAREST NEIGHBOR BASED ON PARTICLE SWARM OPTIMIZATION ACCORDING TO SUNSCREEN’S REVIEWS”, Jurnal Teknik Informatika (Jutif). Purwokerto, 3(6), pp. 1639-1646. doi: 10.20884/1.jutif.2022.3.6.425.