Indri Tri Julianto, D. Kurniadi, and B. B. Balilo Jr. “ENHANCING SENTIMENT ANALYSIS WITH CHATBOTS: A COMPARATIVE STUDY OF TEXT PRE-PROCESSING”. Jurnal Teknik Informatika (Jutif), Vol. 4, no. 6, Dec. 2023, pp. 1419-30, doi:10.52436/1.jutif.2023.4.6.1448.