(Selected) Publications

For a full list, please see my CV.
* means the (co-)corresponding authorship of the PI.
+ means the co-first authorship.

Explanability Method for Sound AI Model
Hyunju Kang, Geonhee Han, Hogun Park*
(in submission)

Robust Subgraph-level Federated Recommender System
Wooseok Sim, Hogun Park*
(in submission)

Federated Recommender System with Data Valuation
Jongwon Park, Soyoung Lee, Mingu Kang, Wooseok Sim, Hogun Park*
(in submission)

Enhancing Knowledge Tracing with Concept Maps
Soonwook Park, Donghoon Lee*, Hogun Park*
(in submission)

Logical Fallacy Detection with LLMs
Ji Won Jeong, Hyeju Jang*, Hogun Park*
(in submission)

A Efficient Training Method for Video Caption Models
Sangho Lee, Il Yong Chun*, Hogun Park*
(in submission)

A Self-Supervised Learning Method with Masked Graph Auto-encoders
Jongwon Park, Heesoo Jung, Hogun Park*
(in submission)

A Self-Supervised Graph Learning Method with Multi-objectives
Heesoo Jung, Yeonje Choi, Hogun Park*
(in submission)

A Domain Adaption Method for sEMG Sensors
Jaehyun Bae, Heesoo Jung, Seonkuk Kim*, Hogun Park*
(in submission)

An Unsupervised Domain Adaption Method for Time-series Data
Heesoo Jung, Jaehyun Bae, Hogun Park*
(in submission)

Orbit-based Explainability Method for Graph Neural Networks
Kyeongrok Park, Hyunju Kang, Hogun Park*
(in submission)

A Recommender System with Logical Reasoning
Jeonghoon Kim, Dongwon Jung, Hogun Park*
(in submission)

Inductive Reasoning in Attributed Knowledge Graphs
Hongjun Jeong, Heesoo Jung, Hogun Park*
(in submission)

Improving Multi-hop Logical Reasoning in Knowledge Graphs with Context-Aware Query Representation Learning
Jeonghoon Kim, Heesoo Jung, Hyeju Jang, Hogun Park*
Findings of the Annual Meeting of the Association for Computational Linguistics (ACL 2024 Findings), 2024. (Accepted)
Arxiv PDF Code

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

Self-supervised Multimodal Graph Convolutional Network for Collaborative Filtering
Sungjune Kim, Gyusam Chang, Wonseok Roh, Dae-Neung Sohn, Jung-Tae Lee, Hogun Park*, Sangpil Kim*
Information Sciences, Elsevier, 2023. (Impact Factor: 8.1, JCR Journal Rank: 7.9%)

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

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

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

Incorporating Experts’ Judgment into Machine Learning Models
Hogun Park, Aly Megahed, Peifeng Yin, Yuya Ong, Pravar Mahajan, Pei Guo
Expert Systems with Applications, Elsevier, 2023. (Impact Factor: 8.5, JCR Journal Rank: 6.4%)
Arxiv PDF Code

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

Laser-induced Carbonization for Anticounterfeiting Tags
Srinivas Gandla, Changgyun Moon, Seungho Baek, Hogun Park*, Seonkuk Kim*.
Advanced Functional Materials, 2023. (Impact Factor: 19.924, JCR Journal Rank in Category (PHYSICS, APPLIED): 4.7% (8/161))
PDF Code Press Release (Korean)

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

Stretchable Array sEMG Sensor with Graph Neural Network for Static and Dynamic Gestures Recognition System
Heesoo Jung+, Soyoung Lee+, Hyeyun Lee+, Jaeseong Kim+, Srinivas Gandla*, Kyung Jae Yoon*, Hogun Park*, Seonkuk Kim*.
npj Flexible Electronics - The Nature Partner Journals series, 2023. (Impact Factor: 14.6, JCR Journal Rank in Category (EE): 2.0% (6/275))
PDF Code Video News(Korean)

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

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

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

A framework for understanding online group behaviors during a catastrophic event
Jooho Kim, Hogun Park*
International Journal of Information Management, Elsevier, Volume 51, 2020.
(Impact Factor: 14.098, JCR Journal Rank in Category (Information Science): 1/87)


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

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

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

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

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

Sharing of Baseball Event through Social Media
Hogun Park, Sun-Bum Youn, Geun-Yong Lee, Heedong Ko
Proc. of the 11th ACM SIGMM International Conference on Multimedia Information Retrieval (MIR 2010, now ACM ICMR), 2010.
PDF Video

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

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

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

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