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Journal : JOURNAL OF APPLIED INFORMATICS AND COMPUTING

Sentiment Analysis on Rupiah Depreciation Against USD Using XGBoost Indrayuni, Ni Komang Purnama; Desmayani, Ni Made Mila Rosa; Pramawati, I Dewa Ayu Agung Tantri; Sandhiyasa, I Made Subrata; Widiartha, Komang Kurniawan
Journal of Applied Informatics and Computing Vol. 9 No. 5 (2025): October 2025
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jaic.v9i5.10751

Abstract

The depreciation of the rupiah against the United States dollar (USD) affects purchasing power and economic stability. Public responses are widely expressed through social media such as X and Instagram. This study aims to analyze public sentiment using the Extreme Gradient Boosting (XGBoost) algorithm. Data were collected through crawling and scraping, consisting of 13,443 X comments and 11,287 Instagram comments between January 2024 until April 2025. Preprocessing included emoji conversion, cleaning, case folding, normalization, tokenization, stopwords removal, and Stemming. Sentiment labeling was performed using the InSet Lexicon, TF-IDF weighting, and data splitting   into 70:30, 80:20, and 90:10. The XGBoost model was trained with parameters: 100 estimators, learning rate 0.1, max depth 6, and subsample 0.8. Results showed accuracies of 74–76% on X data and stable 77% on Instagram. Model evaluation using precision, recall, and F1-score confirmed consistency: precision 0.76% – 0.84%, recall 0.86%–0.88%, and F1-score 0.82%–0.86%, reflecting a balance between accuracy and robustness in detecting sentiments. Sentiment distribution revealed that X is dominated by negative opinions (38%), while Instagram is more positive (41%). These findings confirm the effectiveness of XGBoost in sentiment classification and provide valuable insights for policymakers to design adaptive communication and monetary strategies based on digital public opinion.
Co-Authors Anak Agung Danendra Priya Kayana Aniek Suryanti Kusuma, Aniek Suryanti Ariana, Anak Agung Gede Bagus Aristamy, I Gusti Ayu Agung Mas Aristana, I Dewa Gede Aristana, Made Dona Wahyu Artika, I Nyoman Atmaja, Ketut Jaya Bevi Libraeni, Luh Gede Desak Dwi Utami Putra Devi Valentino Waas Dewa Ayu Giovany Angga Indrya Dewi, Desak Putu Eka Komala Diah Juniari Arnidya Eddy Hartono Eddy Hartono Eko Maisusanto Gede Rudiharta Pratama Giri Gede Surya Mahendra Giri, Gede Rudiharta Pratama I Dewa Gede Aristana I Dewa Putu Gede Wiyata Putra I Gusti Agung Indrawan I Kadek Adiana Putra I Kadek Krisna Dwipayana Putra I Kadek Wira Dharma Prayana I Made Sadha Suardhika I Nyoman Agus Suarya Putra I Nyoman Artika I Nyoman Jayanegara I Putu Agus Eka Darma Udayana, I Putu Agus Eka I Putu Yoga Indrawan I Wayan Dharma Suryawan Ida Bagus Gede Sarasvananda Indrayuni, Ni Komang Purnama Kompiang Martina Dinata Putri Libraeni, Luh Gede Bevi Luh Gede Bevi Libraeni Luh Gede Bevi Libraeni Luh Gede Diah Ary Pradnyaswari Luh Putu Rara Ayu Ratnaningrum Maisusanto, Eko Mulyawan, I Putu Arya Murpratiwi, Santi Ika Ni Kadek Ariasih, Ni Kadek Ni Kadek Ayu Nirwana Ni Made Astini Rahayu Ni Putu Widantari Suandana Ni Wayan Anggita Dara Pratiwi Ni Wayan Anggita Dara Pratiwi Ni Wayan Wardani Ni Wayan Wardani Ni Wayan Wardani Wardani Nirwana, Ni Kadek Ayu Nugraha, Putu Gede Surya Parwathi, Ni Luh Gede Putri Desta Pramawati, I.D.A Tantri Pratiwi, Ni Wayan Anggita Dara Prayana, I Kadek Wira Dharma Purnama, Ni Kadek Liryana Putra, I Gede Ardi Sukaryadi Putra, Putu Satria Udyana Putu Gede Surya Cipta Nugraha Putu Gede Surya Cipta Nugraha Rahayu G., Ni Luh Wiwik Sri Rahayu, Ni Made Astini Sandhisutra , Ida Bagus Ketut Sandhisutra, Ida Bagus Ketut Sandhiyasa, I Made Subrata Sandika, I Kadek Budi Sawitri, Nyoman Sintya Sutarwiyasa, I Ketut Thalib, Emmy Febriani Utama, I Made Putra Wardani, Ni Wayan Widiartha, Komang Kurniawan Wiguna, I Made Surya Willdahlia, Ayu Gede Willdahlia, Ayu Gede Winatha, Komang Redy Wiyata Putra, I Dewa Putu Gede Yuliandari, Ni Kadek