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I am a final-year PhD student in Computer Science at Seoul National University, advised by Byoung-Tak Zhang and Sanghack Lee. I am currently a visiting PhD student at Columbia University, hosted by Elias Bareinboim. Prior to joining Ph.D program, I did my master study in Computer Science at KAIST. I earned my Bachelor's degree in Department of Mathematical Sciences from KAIST. CV / Email / Google Scholar / Github / Twitter |
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My research is centered on building trustworthy AI systems whose decision making is robust and interpretable, encompassing the fields of representation learning, reinforcement learning, and causal inference. In particular, my recent works involve developing robust and efficient algorithms for causal inference and causal discovery, with their application for building reliable machine learning models. Additionally, I am interested in discovering and utilizing useful inductive biases to better align model decisions with human reasoning. |
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(* equal contribution, † equal advising) |
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Inwoo Hwang*, Yesong Choe*, Yeahoon Kwon, Sanghack Lee We establish rigorous foundations for licensing the use of identification formulas without strict positivity, a long-standing critical assumption in causal inference. |
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Inwoo Hwang, Yunhyeok Kwak, Suhyung Choi, Byoung-Tak Zhang†, Sanghack Lee† We propose a principled and practical approach to discovering fine-grained causal relationships with identifiability guarantees for robust decision-making. |
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Yunhyeok Kwak*, Inwoo Hwang*, Dooyoung Kim, Sanghack Lee†, Byoung-Tak Zhang† We propose state-conditioned action abstraction that effectively reduces the search space of MCTS under vast combinatorial action space by harnessing compositional relationships between state and sub-actions. |
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Jonghwan Kim, Inwoo Hwang, Sanghack Lee We propose a simple yet effective plug-in module that corrects unreliable CI statements through deductive reasoning using graphoid axioms, thereby improving the robustness of constraint-based causal discovery methods. |
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Hyundo Lee, Inwoo Hwang, Hyunsung Go, Won-Seok Choi, Kibeom Kim, Byoung-Tak Zhang Inspired by human behavior that depicts an image by sketching, we propose a novel representation learning framework that captures geometric information of the scene, such as distance or shape. |
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Inwoo Hwang, Yunhyeok Kwak, Yeon-Ji Song, Byoung-Tak Zhang†, Sanghack Lee† Local independence (e.g., context-specific independence) provides a way to understand fine-grained causal relationships, but it has mostly been studied for discrete variables. We define and characterize local independence for continuous variables, provide its fundamental properties, and propose a differentiable method to discover it. |
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Inwoo Hwang, Sangjun Lee, Yunhyeok Kwak, Seong Joon Oh, Damien Teney, Jin-Hwa Kim†, Byoung-Tak Zhang† Neural networks trained with ERM often learn unintended decision rules when trained on a biased dataset where the labels are strongly correlated with undesirable features. We propose a novel debiasing method that applies mixup to the selected pairs of examples, utilizing a contrastive loss designed to amplify reliance on biased features. |
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Junseok Park, Inwoo Hwang, Min Whoo Lee, Hyunseok Oh, Minsu Lee, Youngki Lee, Byoung-Tak Zhang |
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Sangjun Lee, Inwoo Hwang, Gi-Cheon Kang, Byoung-Tak Zhang |
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The source of this website is from here. |