Lucky Susanto


2024

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SEACrowd: A Multilingual Multimodal Data Hub and Benchmark Suite for Southeast Asian Languages
Holy Lovenia | Rahmad Mahendra | Salsabil Maulana Akbar | Lester James Validad Miranda | Jennifer Santoso | Elyanah Aco | Akhdan Fadhilah | Jonibek Mansurov | Joseph Marvin Imperial | Onno P. Kampman | Joel Ruben Antony Moniz | Muhammad Ravi Shulthan Habibi | Frederikus Hudi | Jann Railey Montalan | Ryan Ignatius Hadiwijaya | Joanito Agili Lopo | William Nixon | Börje F. Karlsson | James Jaya | Ryandito Diandaru | Yuze Gao | Patrick Amadeus Irawan | Bin Wang | Jan Christian Blaise Cruz | Chenxi Whitehouse | Ivan Halim Parmonangan | Maria Khelli | Wenyu Zhang | Lucky Susanto | Reynard Adha Ryanda | Sonny Lazuardi Hermawan | Dan John Velasco | Muhammad Dehan Al Kautsar | Willy Fitra Hendria | Yasmin Moslem | Noah Flynn | Muhammad Farid Adilazuarda | Haochen Li | Johanes Lee | R. Damanhuri | Shuo Sun | Muhammad Reza Qorib | Amirbek Djanibekov | Wei Qi Leong | Quyet V. Do | Niklas Muennighoff | Tanrada Pansuwan | Ilham Firdausi Putra | Yan Xu | Tai Ngee Chia | Ayu Purwarianti | Sebastian Ruder | William Chandra Tjhi | Peerat Limkonchotiwat | Alham Fikri Aji | Sedrick Keh | Genta Indra Winata | Ruochen Zhang | Fajri Koto | Zheng Xin Yong | Samuel Cahyawijaya
Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing

Southeast Asia (SEA) is a region rich in linguistic diversity and cultural variety, with over 1,300 indigenous languages and a population of 671 million people. However, prevailing AI models suffer from a significant lack of representation of texts, images, and audio datasets from SEA, compromising the quality of AI models for SEA languages. Evaluating models for SEA languages is challenging due to the scarcity of high-quality datasets, compounded by the dominance of English training data, raising concerns about potential cultural misrepresentation. To address these challenges, through a collaborative movement, we introduce SEACrowd, a comprehensive resource center that fills the resource gap by providing standardized corpora in nearly 1,000 SEA languages across three modalities. Through our SEACrowd benchmarks, we assess the quality of AI models on 36 indigenous languages across 13 tasks, offering valuable insights into the current AI landscape in SEA. Furthermore, we propose strategies to facilitate greater AI advancements, maximizing potential utility and resource equity for the future of AI in Southeast Asia.

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Monitoring Hate Speech in Indonesia: An NLP-based Classification of Social Media Texts
Musa Izzanardi Wijanarko | Lucky Susanto | Prasetia Anugrah Pratama | Ika Karlina Idris | Traci Hong | Derry Tanti Wijaya
Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing: System Demonstrations

Online hate speech propagation is a complex issue, deeply influenced by both the perpetrator and the target’s cultural, historical, and societal contexts. Consequently, developing a universally robust hate speech classifier for diverse social media texts remains a challenging and unsolved task. The lack of mechanisms to track the spread and severity of hate speech further complicates the formulation of effective solutions. In response to this, to monitor hate speech in Indonesia during the recent 2024 presidential election, we have employed advanced Natural Language Processing (NLP) technologies to create an improved hate speech classifier tailored for a narrower subset of texts; specifically, texts that target vulnerable groups that have historically been the targets of hate speech in Indonesia. Our focus is on texts that mention these six vulnerable minority groups in Indonesia: Shia, Ahmadiyyah, Christians, LGBTQ+, Indonesian Chinese, and people with disabilities, as well as one additional group of interest: Jews. The insights gained from our dashboard have assisted stakeholders in devising more effective strategies to counteract hate speech. Notably, our dashboard has persuaded the General Election Supervisory Body in Indonesia (BAWASLU) to collaborate with our institution and the Alliance of Independent Journalists (AJI) to monitor social media hate speech in vulnerable areas in the country known for hate speech dissemination or hate-related violence in the upcoming Indonesian regional elections. This dashboard is available online at https://aji.or.id/hate-speech-monitoring.

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Could We Have Had Better Multilingual LLMs if English Was Not the Central Language?
Ryandito Diandaru | Lucky Susanto | Zilu Tang | Ayu Purwarianti | Derry Tanti Wijaya
Proceedings of the Second International Workshop Towards Digital Language Equality (TDLE): Focusing on Sustainability @ LREC-COLING 2024

Large Language Models (LLMs) demonstrate strong machine translation capabilities on languages they are trained on. However, the impact of factors beyond training data size on translation performance remains a topic of debate, especially concerning languages not directly encountered during training. Our study delves into Llama2’s translation capabilities. By modeling a linear relationship between linguistic feature distances and machine translation scores, we ask ourselves if there are potentially better central languages for LLMs other than English. Our experiments show that the 7B Llama2 model yields above 10 BLEU when translating into all languages it has seen, which rarely happens for languages it has not seen. Most translation improvements into unseen languages come from scaling up the model size rather than instruction tuning or increasing shot count. Furthermore, our correlation analysis reveals that syntactic similarity is not the only linguistic factor that strongly correlates with machine translation scores. Interestingly, we discovered that under specific circumstances, some languages (e.g. Swedish, Catalan), despite having significantly less training data, exhibit comparable correlation levels to English. These insights challenge the prevailing landscape of LLMs, suggesting that models centered around languages other than English could provide a more efficient foundation for multilingual applications.

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MetaMetrics-MT: Tuning Meta-Metrics for Machine Translation via Human Preference Calibration
David Anugraha | Garry Kuwanto | Lucky Susanto | Derry Tanti Wijaya | Genta Winata
Proceedings of the Ninth Conference on Machine Translation

We present MetaMetrics-MT, an innovative metric designed to evaluate machine translation (MT) tasks by aligning closely with human preferences through Bayesian optimization with Gaussian Processes. MetaMetrics-MT enhances existing MT metrics by optimizing their correlation with human judgments. Our experiments on the WMT24 metric shared task dataset demonstrate that MetaMetrics-MT outperforms all existing baselines, setting a new benchmark for state-of-the-art performance in the reference-based setting. Furthermore, it achieves comparable results to leading metrics in the reference-free setting, offering greater efficiency.

2023

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Replicable Benchmarking of Neural Machine Translation (NMT) on Low-Resource Local Languages in Indonesia
Lucky Susanto | Ryandito Diandaru | Adila Krisnadhi | Ayu Purwarianti | Derry Tanti Wijaya
Proceedings of the First Workshop in South East Asian Language Processing