A Self-Supervised Learning Method with Maksed Graph Auto-encoders (in submission)

A Logical Reasoning Methods with Query Representation Learning (in submission)

A Domain Adaption Method for sEMG Sensors (in submission)

Orbit-based Explainability Method for Graph Neural Networks (in submission)

A Recommender System with Logical Reasoning (in submission)

Hyunju Kang, Geonhee Han, Hogun Park*, UNR-Explainer: Counterfactual Explanations for Unsupervised Node Representation Learning Models, International Conference on Learning Representations (ICLR 2024), 2024. (Accepted) Preprint Code

Sungjune Kim, Gyusam Chang, Wonseok Roh, Dae-Neung Sohn, Jung-Tae Lee, Hogun Park*, Sangpil Kim*, Self-supervised Multimodal Graph Convolutional Network for Collaborative Filtering, Information Sciences, Elsevier, 2024. (Impact Factor: 8.1, JCR Journal Rank: 7.9%) PDF

Seongmin Park, Mincheol Yoon, Jae-woong Lee, Hogun Park and Jongwuk Lee, Toward a Better Understanding of Loss Functions for Collaborative Filtering, ACM International Conference on Information and Knowledge Management (CIKM 2023), 2023. (Acceptance rate: 24%) Arxiv PDF Code

Sookyung Kim+, Gayoung Kim+, Ko Keun Kim, Suchan Park, Heesoo Jung, Hogun Park*, Exploiting Relation-aware Attribute Representation Learning in Knowledge Graph Embedding for Numerical Reasoning, ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD 2023), 2023. (Acceptance rate: 22.1%) Arxiv PDF Dataset and Code 2-mins Promotion Video

Hogun Park, Jennifer Neville, Generating Post-hoc Explanations for Skip-gram-based Node Embeddings by Identifying Important Nodes with Bridgeness, Neural Networks, 2023. (Impact Factor: 9.657, JCR Journal Rank: 8.1%) Arxiv PDF Code

Hogun Park, Aly Megahed, Peifeng Yin, Yuya Ong, Pravar Mahajan, Pei Guo, Incorporating Experts’ Judgment into Machine Learning Models, Expert Systems with Applications, Elsevier, 2023. (Impact Factor: 8.665, JCR Journal Rank: 8.1%) Arxiv PDF Code

Heesoo Jung, Sangpil Kim, Hogun Park*, Dual Policy Learning for Aggregation Optimization in Graph Neural Network-based Recommender Systems, The Web Conference (WWW 2023), 2023. (Acceptance rate: 19.2%). PDF Code

Srinivas Gandla, Changgyun Moon, Seungho Baek, Hogun Park*, Seonkuk Kim*. Laser-induced carbonization for anticounterfeiting tags, Advanced Functional Materials, 2023. (Accepted As a Cover Page, Impact Factor: 19.924, JCR Journal Rank in Category (PHYSICS, APPLIED) : 4.7% (8/161)) PDF Code

Hogun Park, Providing Post-hoc Explanation for Node Representation Learning Models Through Inductive Conformal Predictions, IEEE Access, 2023. PDF

Heesoo Jung+, Soyoung Lee+, Hyeyun Lee+, Jaeseong Kim+, Srinivas Gandla*, Kyung Jae Yoon*, Hogun Park*, Seonkuk Kim*, Stretchable Array sEMG Sensor with Graph Neural Network for Static and Dynamic Gestures Recognition System, npj Flexible Electronics - The Nature Partner Journals series, 7, 20, Springer Nature, 2023. (Impact Factor: 12.019, JCR Journal Rank in Category (EE) : 3.8% (11/276)) PDF Code Video

Hyunju Kang, Hogun Park, Providing Node-level Local Explanation for node2vec through Reinforcement Learning, Proc. of the Machine Learning on Graphs (MLoG) Workshop at the 15th ACM Conference on Web Search and Data Mining (WSDM 2022), 2022. PDF

I Luk Kim, Yunhui Zheng, Hogun Park, Weihang Wang, Wei You, Yousra Aafer, Xiangyu Zhang, Finding Client-side Business Flow Tampering Vulnerabilities, Proc. of the 42nd International Conference on Software Engineering (ICSE 2020), 2020. (Acceptance rate: 20.91%) PDF

Hogun Park, Jennifer Neville, Role Equivalence Attention for Label Propagation in Graph Neural Networks, Proc. of the 24th Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD 2020), 2020. (Acceptance rate: 21%) PDF

Jooho Kim, Hogun Park*, A framework for understanding online group behaviors during a catastrophic event, International Journal of Information Management, Elsevier, Volume 51, 2020. (Impact Factor: 8.21, JCR Journal Rank in Category (Information Science): 1/87) PDF BibTeX

Hogun Park, Jennifer Neville, Exploiting Interaction Links for Node Classification with Deep Graph Neural Networks, Proc. of the 28th International Joint Conference on Artificial Intelligence (IJCAI 2019), 2019. (Acceptance rate: 17.89%) PDF Code BibTeX

Hogun Park, Hamid Reza Motahari Nezhad, Learning Procedures from Text: Codifying How-to Procedures in Deep Neural Networks, Proc. of the 27th The Web Conference (WWW 2018) - Cognitive Computing Track, 2018. PDF BibTeX

Hogun Park, John Moore, Jennifer Neville, Deep Dynamic Relational Classifiers: Exploiting Dynamic Neighborhoods in Complex Networks, Proc. of the MAISoN Workshop in 10th ACM Conference on Web Search and Data Mining (WSDM 2017), 2017. PDF BibTeX

Dongmahn Seo, Suhyun Kim, Hogun Park, Heedong Ko, Real-Time Panoramic Video Streaming System with Overlaid Interface Concept for Social Media, Multimedia Systems, Volume 20, Issue 6, Springer, 2014. PDF

Hogun Park, Sun-Bum Youn, Geun-Yong Lee, Heedong Ko, Trendy Episode Detection at a Very Short Time Granularity for Intelligent VOD Service, Proc. of the 9th European Interactive TV Conference (EuroITV 2011, now ACM IMX), 2011 PDF

Hogun Park, Sun-Bum Youn, Eugene Hong, Changhyeon Lee, Yong-moo Kwon, Heedong Ko, Myon-Woong Park, Young Tae Sohn, Jae Kwan Kim, Sharing of Baseball Event through Social Media, Proc. of the 11th ACM SIGMM International Conference on Multimedia Information Retrieval (MIR 2010, now ACM ICMR), 2010. PDF

Hogun Park, Sung-Hyon Myaeng, Gwan Jang, Jong-wook Choi, Sooran Jo, Hyungchul Roh, Interactive Information Seeking Interface for Exploratory Search, Proc. of the Human-Computer Interaction and Information Retrieval 2008 (HCIR 2008, now ACM CHIIR), 2008. PDF PDF (Extended Version, published in ICEIS 2008)

Hogun Park, Yoonjung Choi, Yuchul Jung, and Sung-Hyun Myaeng, Supporting Mixed Initiative Human-Robot Interaction: A Script-based Cognitive Architecture Approach, Proc. of the 21st IEEE International Joint Conference on Neural Network (IJCNN 2008), 2008. PDF

Yuchul Jung, Hogun Park, Yoonjung Choi, and Sung-Hyon Myaeng, Designing a Cognitive Case-Based Reasoning Framework for Home Service Robots, Proc. of the 16th IEEE International Symposium on Robot Human Interactive Communication (RO-MAN 2007), 2007. PDF

Yuchul Jung, Hogun Park, and Sung-Hyon Myaeng, A Hybrid Mood Classification Approach for Blog Text, Proc. of the 9th Pacific Rim International Conference on Artificial Intelligence (PRICAI 2006), 2006. (Acceptance rate: 28.8%) PDF