no code implementations • 28 Aug 2024 • Yeon-Chang Lee, Jaehyun Lee, Michiharu Yamashita, Dongwon Lee, Sang-Wook Kim
The problem of career trajectory prediction (CTP) aims to predict one's future employer or job position.
no code implementations • 23 Aug 2024 • Yeon-Chang Lee, Hojung Shin, Sang-Wook Kim
Graph Neural Networks (GNNs) have become essential tools for graph representation learning in various domains, such as social media and healthcare.
no code implementations • 28 Feb 2024 • Youngseung Jeon, JaeHoon Kim, SoHyun Park, Yunyong Ko, Seongeun Ryu, Sang-Wook Kim, Kyungsik Han
HearHere facilitates the key processes of news information consumption through two visualizations.
1 code implementation • 25 Feb 2024 • Neng Kai Nigel Neo, Yeon-Chang Lee, Yiqiao Jin, Sang-Wook Kim, Srijan Kumar
The Fair Graph Anomaly Detection (FairGAD) problem aims to accurately detect anomalous nodes in an input graph while avoiding biased predictions against individuals from sensitive subgroups.
1 code implementation • 19 Dec 2023 • Taeri Kim, Jiho Heo, Hongil Kim, Kijung Shin, Sang-Wook Kim
While there exist a number of recommender systems designed for this problem, we point out that they are challenged in accurately capturing the relation (spec., the degree of relevance) between the current and each of the past visits for the patient when obtaining her current health status, which is the basis for recommending medications.
1 code implementation • 15 Dec 2023 • Yungi Kim, Taeri Kim, Won-Yong Shin, Sang-Wook Kim
In this paper, we focus on multimedia recommender systems using graph convolutional networks (GCNs) where the multimodal features as well as user-item interactions are employed together.
no code implementations • 13 Oct 2023 • Yunyong Ko, Seongeun Ryu, Sang-Wook Kim
Personalized news recommendation aims to assist users in finding news articles that align with their interests, which plays a pivotal role in mitigating users' information overload problem.
1 code implementation • 11 Sep 2023 • Yunyong Ko, Hanghang Tong, Sang-Wook Kim
To tackle both challenges together, in this paper, we propose a novel hyperedge prediction framework (CASH) that employs (1) context-aware node aggregation to precisely capture complex relations among nodes in each hyperedge for (C1) and (2) self-supervised contrastive learning in the context of hyperedge prediction to enhance hypergraph representations for (C2).
1 code implementation • 2 Sep 2023 • Min-Jeong Kim, Yeon-Chang Lee, David Y. Kang, Sang-Wook Kim
The proposed approach consists of three modules: (M1) generation of each node's extended ego-network; (M2) measurement of trustworthiness on edge signs; and (M3) trustworthiness-aware propagation of embeddings.
1 code implementation • 23 Feb 2023 • Yunyong Ko, Seongeun Ryu, Soeun Han, Youngseung Jeon, JaeHoon Kim, SoHyun Park, Kyungsik Han, Hanghang Tong, Sang-Wook Kim
Motivated by this, in this work, we conduct a user study to investigate important factors in political stance prediction, and observe that the context and tone of a news article (implicit) and external knowledge for real-world entities appearing in the article (explicit) are important in determining its political stance.
1 code implementation • 8 Dec 2022 • Kartik Sharma, Yeon-Chang Lee, Sivagami Nambi, Aditya Salian, Shlok Shah, Sang-Wook Kim, Srijan Kumar
Social recommender systems (SocialRS) simultaneously leverage the user-to-item interactions as well as the user-to-user social relations for the task of generating item recommendations to users.
1 code implementation • 3 Sep 2022 • Taeri Kim, Noseong Park, Jiwon Hong, Sang-Wook Kim
Many cyberattacks start with disseminating phishing URLs.
2 code implementations • 14 Nov 2021 • Taeyong Kong, Taeri Kim, Jinsung Jeon, Jeongwhan Choi, Yeon-Chang Lee, Noseong Park, Sang-Wook Kim
To our knowledge, we are the first who design a hybrid method and report the correlation between the graph centrality and the linearity/non-linearity of nodes.
2 code implementations • 26 Jun 2019 • Youngnam Lee, Youngduck Choi, Junghyun Cho, Alexander R. Fabbri, HyunBin Loh, Chanyou Hwang, Yongku Lee, Sang-Wook Kim, Dragomir Radev
Our model outperforms existing approaches over several metrics in predicting user response correctness, notably out-performing other methods on new users without large question-response histories.
no code implementations • 1 May 2019 • Cong Tran, Jang-Young Kim, Won-Yong Shin, Sang-Wook Kim
As collaborative filtering (CF) is one of the most prominent and popular techniques used for recommender systems, we propose a new clustering-based CF (CBCF) method using an incentivized/penalized user (IPU) model only with ratings given by users, which is thus easy to implement.