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Hybrid Relevance and Sentiment Classification of Indonesian Gold Tweets Using Machine Learning for Market Risk Signal Extraction Kamalia, Antika Zahrotul; Indra, Indra; Wibowo, Arief; Riwurohi, Jan Everhard; Hassan, Shiza
International Journal of Advances in Data and Information Systems Vol. 7 No. 1 (2026): April 2026 - International Journal of Advances in Data and Information Systems
Publisher : Indonesian Scientific Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59395/ijadis.v7i1.1517

Abstract

This study proposes a hybrid relevance–sentiment classification framework to analyze public opinion on physical Antam gold from Indonesian Twitter data and to support exploratory market-risk signal extraction. Tweets were collected during February–November 2025, after preprocessing and text-normalized deduplication, 1,271 unique tweets were retained. The approach combines weak supervision (rule-/lexicon-based silver labels) with TF-IDF-based machine learning in two stages: (1) relevance classification to separate tweets genuinely discussing physical Antam gold from non-relevant contexts (e.g., ANTM stock/capital-market discussions), and (2) two-class sentiment classification (positive vs negative) applied to relevance-filtered tweets. Random Forest achieved the strongest relevance performance (Accuracy = 0.984; macro-F1 = 0.943; 5-fold CV macro-F1 = 0.928 ± 0.033). For sentiment classification, performance was moderate and close across models; the most stable model under cross-validation (Logistic Regression/Naive Bayes) was used for downstream aggregation. Sentiment outputs were aggregated into a monthly sentiment index for descriptive comparison with gold prices; the observed association was weak, indicating that the index is better interpreted as a risk-perception proxy rather than a direct price predictor.
Enhancing ZIS Donor Loyalty Through The Role of Trust at Baitul Maal Hidayatullah East Kalimantan Salamun, Imam; Indra, Indra
Dinar : Jurnal Ekonomi dan Keuangan Islam Vol 12, No 2: Agustus 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/dinar.v12i2.31124

Abstract

This study is motivated by the limited empirical research examining the direct effects of service quality, institutional image, communication, and donation convenience on donor trust and its subsequent impact on loyalty in zakat, infaq, and sadaqah (ZIS) donations. The objective of this research is to analyze the influence of service quality, institutional image, communication, and donation convenience on donor trust, as well as to examine the effect of donor trust on ZIS donation loyalty at Baitul Maal Hidayatullah East Kalimantan. This study employs a quantitative approach using the Partial Least Squares–Structural Equation Modeling (PLS-SEM) method. Primary data were collected through closed-ended questionnaires using a 5-point Likert scale distributed to 240 active donors selected through purposive sampling. The findings reveal that service quality and institutional image have a positive and significant effect on donor trust, whereas communication and donation convenience show positive but statistically insignificant effects. Furthermore, donor trust significantly and positively influences ZIS donation loyalty. The study implies that improving service quality and strengthening institutional image are key strategies in building sustainable donor trust and loyalty.
Analysis of spiny lobster fishery sustainability the using ecosystem approach to fisheries management (EAFM) in Pulo Aceh Mukminin, Ahmad; Indra, Indra; Sarong, Muhammad Ali
Depik Vol 11, No 1 (2022): April 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.1.24035

Abstract

The high exploitation rate due to increasing global demand caused spiny lobster vulnerable to overfishing. this study aims to assess the sustainability status of lobster fisheries, through the ecosystem approach to fisheries management (EAFM) and to examine the appropriate strategies to support the sustainability of spiny lobster fisheries in Pulo Aceh Islands, Aceh Besar district, Aceh Province. Indicators or domains used in this study are fish resources, habitats, and ecosystems, fishing techniques, economics, social, and governance, which consist of 27 attributes. Results show that the aggregate value of fish resources domain is 59.22 (moderate), habitat and ecosystem domain is 39.14, (poor), fishing technique domain is 28.62 (poor), the economic domain is 65 (good), social domain is 47.82 (moderate) and the institutional domain is 39.89 (poor). The overall aggregate value for the six domains is 46.61 (moderate), the sustainability status of the spiny lobster fishery in Pulo Aceh is in the moderate category. the fish resource domain and the economic domain are the main domains that provide a positive value for the sustainability of the lobster fishery in Pulo Aceh. However, to improve the status of lobster fisheries management in Pulo Aceh; should focus on domains that have low-value categories, which are; fishing techniques, habitats and ecosystems, and governance domain.Keywords:Spiny LobsterPulo Aceh IslandsSustainabilityManagement Strategy
Co-Authors . Rahman , Muhammad Iqbal A. A Aam Slamet Rusydiana, Aam Slamet Abdul Mughni Ade Muhammad Ritonga Adha, Prama Natio Afifah, Kuni Afriliani, Sri Afrina, Nyak Yusfa Agus Nugroho, Agus Agus Umar Hamdani Agussabti Agussabti Agustianto Agustianto, Agustianto Agustina, Adinda Agustinawati, Dwi Agustini, Sherly Ahmad Rosyid Akbardiansyah, Akbardiansyah Aksal Hidayat Al Aziz, Abdul Al Rasyidin Alexius Ulan Bani Alfiyanti, Dwi Ali Sarong Ali, Ramsah Ali, Zulkarnain Muhammad AMALIA, TIARA Ambiyar, Ambiyar Amna Emda Anak Agung Istri Sri Wiadnyani Andi Bungawati, Andi Andi Rosman N Andiyana Sandi, Aan Andri Rivai Andrilolo, Andrilolo Andy Arya Maulana Wijaya Anita Priantina Annisa Agelina, Annisa Annissya, Widia Primi Antika Zahrotul Kamalia Aprillia, Ade Yeni Ardhina, Aried Ardiansyah, La Ode Ariani Trisna Murti Arief Wibowo Arifin, Dadang Arifin, Nofri Yudi Arip Rahman Arsad, Arsad Aryasanti, Agnes Asia Arifin asih, yekti purwo Asrul Asrul Athaya, Putri Aufa, Aufa Aulia Puspa Ayu Aulia Rahman Auliansyah, Auliansyah Avedta, Sherrindra Azisah Mn, Abdilla Nurul Azzahro, Siti Fatimah Basir, Ita Sulistiani Bayu Prasetyo, Bayu Bayu Taufiq Possumah, Bayu Taufiq Bernadus Gunawan Sudarsono Bravo, Bram Chaliluddin, Makwiyah A. Darfiti, Refit Gustaroska Darmawan Darmawan Dayat Dayat, Dayat Depari, Genesis Sembiring Dewi Kusuma Wardani Dewi, Trihoni Nalesti Dewi, Yasdiafiani Dhanny Cahyadi, Dhanny Diah Supatmiwati Didit Haryadi Dori Chandra Efendi, Raimon Efin Shu Eka, Audinah Elly Susanti Elvi Juliansyah Endang Silaningsih Ernawati Ernawati Erni Yuningsih Ervien Ervien, Ervien Erwin Purwanto Faiz Fauzan, Moch Faizi, Besse Nur FAJAR SETIAWAN Fajar, Setiawan Falihin, Dalilul Faliqul Isbah Farida Arianti Fatimah, Tri Fatiqiyah, S. Syarah Firdausi, Wildan Firmansyah Firmansyah Firnanda, Teguh Fissilmi, Annisa Fitri Wijayanti Fitriya, Fitriya Gaffar, Emmilya Umma Aziza Gamayuni, Rindu Rika Gatut Ari Wardani Grace Gata, Grace Gustaman, Firman Gusti Vonna, Adinda Habiba, Syahrir Hadidtyo Wisnu Wardani Hadistio , Ryan Rinaldi Haedar Haedar, Haedar Halimursyadah Halimursyadah Hamdan Hamdan Hamidi Hamidi Handepi, Nogi Harda Armayanto Haryanto, Anton Hasmina Tari Mokui Hasni, Mutiara Hassan, Shiza Hendra Purnama Heriani, Andi Hilda Hastuti Hilda Susanti Hudiarto Hudiarto, Hudiarto Husen, Rahma Aulia Hussin, Mohd Fauzi bin Abu Ibarahim, Deva Ichsan Setiawan Idacahyati, Keni Idriana, Idriana Idris Putra , Muhammad Ihsan, Fahrun Ilahi, Vitratul Ilham Nurhalim, M. Imaduddin, Imaduddin Indra Indra Indrawan, Mohamad Gita Indya Dewi Insani, Risna Nurul Insani, Sri Ayu Intan Indriani , Gustania Iqram, Muh. Irfan AP Irwan Syahib, Muhammad Iskak, Jamaludin Isnaini, Nadia Jati, Sri Nugroho Jauharlina Jauharlina Joko Purnomo Julyanti, Ai Rian Jumardi Budiman Kada, Marselino Sambo Kamal, Kamal Kamarubayana, Legowo Kamaruzzaman, Suraiya Karimah, Diva Azka Karo, Tiy Kusmarrabbi Khairun Nisa Khaq, Akhsanul Khoe Yao Tung Kirana, Hashimia Nindya Kur’ani, Nur Kurniaty, Dwi Kurniawan D, Erno Kurniawan, Pebri Kusdiarto, Djati La Taena, La Lesi Hertati, Lesi Lili Syafitri, Lili Lilis, Tuslinah Lis Suryadi, Lis Lucky Amansa, M. Lucy Warsindah Luqyan Tamanni, Luqyan Lusi Nurdianti, Lusi M. Aldan Maharani, Wahyuni Diandra Maria Ulfa Maria Ulfah Martono Martono Maryadi Maryadi Maryadi Masyitha Wahid Maula, Rizka Maulani Mukarom, Hasna Meti Kusmiati, Meti Mia Sari, Mia Miftahul Huda Moh. Nisyar Sy. Abd. Azis MUFTI MUFTI, MUFTI Muh Nur Syukriani Yusuf Muh. Darwis Muhammad Akram Muhammad Ferdiansyah, Muhammad Muhammad Ilham Muhammad Rusdi Muhammad Thahir Muhammad Yusuf Ibrahim Muhammdar, Muhammadar Mujiburrahmad Mujiburrahmad Mukarom, Hasna Maulani Mukhram, Muhammad Mukminin, Ahmad Muliati Muliati, Muliati Murdani, Agus Murdia, Agus Miranda Murni Murni Murti Suyoto, Indah Dewi Mustarum Musaruddin Mutia Alif Cahyani Nadrun, Nadrun Najmi Najmi, Najmi Nanda Muhammad Razi Naniwarsih, Andi Nashr Akbar, Nashr Nasrun, Muhammad Syaifuddin Nasution, Nurwinda Aulia Nawawi Nawawi Nazarudin Nelly Shofia Netania Emilisa Nizwardi Jalinus Novianti, Asri Dwi Novita Anggraeni Nur Afni Nur Fadli Nur Rahayuningsih, Nur Nur, Nahya Nuralamsah Zulkarnaim Nuriman, Nurfitriavi Nurmalasari, Novianti Nurmuliayanti Muis Nurul Akmal, Intan NURUL HIDAYAH Nurul Inayah Nurunnasikin, Nurunnasikin Nurwati Nurwati Oki Maulana Oktasya, Khairina Mutia Oman Sukmana Oslan Jumadi Pamuncak, Mohammad Bintang Parman, Imelda Aulia Prajaputra, Vicky Pramono, Sigid Eko Pratiwi, Asty Eka Putra Singarimbun , Aldo Putra Putri, Isra Mulia Putri, Nabila Putri, Tiara Resta Qorina, Erik Inazi Rabiatul Adawiyah Rachmad, Dedy Rafiqa, Syarifa Rahmah, Aziza Rahman, La Rahmandhita, Awaluna Nurdilan Rajab, Vira Ardianti Ramadan Ramadan Ramadhan Sitepu, Yuda Mulia Ramadhaniaty, Mutia Ramdani, Muhamad Rizki Ratih Agustin Wulandari Ratih Aryani, Ratih Ratnasari Ratnasari Rian Adrian Rian Andrianto Riani, Ririn Riki Gana Suyatna Riski, Cantika D. Risno, Risno Riswandha, Muhammad Noval Rizaldi, Agung Rizki, Akang Abdika Robin Robin, Robin Rosul, Mekar Bunga Allamanda Rozaanah, Rozaanah Ruwirohi, Jan Everhard Saddam, Mohd Amiruddin Sahputra, Roza Salamun, Imam Samsinar Samsinar Sari, Dian Megah Sartika Sartika Sartika, Sartika Saskia, Saskia Satifa, Siti Annisa Satria, Akbar Dimas Septiani, Elsa Trista Setiawan , Adhi Setiawan, Kurnia Sihotang, Putri Sinaga, Sopian Siti Halimah, Ooy Siti Rahma Sawalia Nabila Sobari, M. Abdul Azis Sofyan Sofyan Suci, Syahra Deviena Khien Sufriadi, Elly Sukendi, Agis Maulana Sukiman Sukiman Sukmana, M. Laily Qadry Sulasti, Sulasti - Sulindrina, Andra Sulistia, Yunika Sumarno . Suntoro, Adib Fattah Supomo Supomo Suri, Ghea Paulina SUSENO, JOKO Sutarman Sutarman Sutrisna, Saleh Suyanti Kasimin Syahputra Nasution, Kurnia Syaiful Bachri Syaifullah Muhammad Syaipudin, Usep Syamsidah, Syamsidah Syamsurrijal Syarifah Balkis, Syarifah Syukri Iska, Syukri Tanniewa, Adam Tarmizi , Erwandi Taufieq, Nur Anny S. Taufik Hidayat Thaha, Sarma Theresa Dwi Kurnia Tirkaamiana, Muhammad Taufan Tri Bowo Atmojo, Tri Bowo Triyani, Anggi Triyono, Gandung Udin Rinaldi Usana, Usana Usman Usman Usman, Auliah Wa Ode Rahmadania Wahyudi , Wahyudi Warnida, Husnul Waskito Waskito, Waskito Wedi, Surya Weley, Nadia Carolina Wibisono, Chabulullah Wibowo, Daniel Budi Wibowo, Herry Widyaningsih, Atria Tiffany Wiharto, Yudi Winda Trisna Wulandari, Winda Trisna Wirman, Wirman Wisandra, Ade Yadi Aditya, Prawira Yanti, Arifatul Yesi Aprianti Yuana yuana, Yuana Yudhi Ahmad Nazari Yudi Santoso, Yudi Yulia, Yulfa Yuliana, Anita Yusuf, Nur Ayun R. Zaerofi, Afif Zahirah, Zahirah zainuddin Abdussamad Zairin, Zairin Zikri, Irfan ZUHRONI, ZUHRONI Zulfadli, Muhammad zulkifli, ridwan Zulwanis, Zulwanis