Tikaningsih, Ades, Imam Tahyudin, and Berlilana. 2026. “Two-Stage Framework Using IndoBERT for Sentiment Analysis of Tokopedia Reviews under Extreme Class Imbalance”. Sinkron : Jurnal Dan Penelitian Teknik Informatika 10 (3):1733-44. https://doi.org/10.33395/sinkron.v10i3.16187.