?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=NANDINI&rft.aufirst=KETY&rft.au=NANDINI%2C+KETY&rft.degree=S1+-+Sarjana&rft.title=%7BJALUR+SCIENTIST%7D+SENTIMENT+ANALYSIS+OF+ECONOMIC+POLICY+COMMENTS+ON+YOUTUBE+USING+ENSEMBLE+MACHINE+LEARNING&rft.inst=Universitas+AMIKOM+Yogyakarta&rft.date=20+October+2025