“…Previous studies have explored the approaches and challenges of sentiment analysis based on various machine learning [16], [19], [21] and its implementation across board research areas: in the tourism context [11], in the medical field for coronary angiography [22], and geography are related to shallow landslide susceptibility mapping [23]. The data input for the machine learning process could be derived from various sources: Twitter data [24]- [31], journaling entries [32], movie dataset [33], [34], reviews on various applications: Traveling application [35] and Shopping application [36], [37], and user's review on Google Play Store [21], [38]- [40] and App Store [20]. Machine learning approaches are performed to categorize the polarity of sentiment based on a train and test dataset.…”