Search Results for author: Jiwoong Park

Found 4 papers, 3 papers with code

Confidence-Based Feature Imputation for Graphs with Partially Known Features

1 code implementation26 May 2023 Daeho Um, Jiwoong Park, Seulki Park, Jin Young Choi

To overcome this limitation, we introduce a novel concept of channel-wise confidence in a node feature, which is assigned to each imputed channel feature of a node for reflecting certainty of the imputation.

Graph Learning Imputation +2

Meta-node: A Concise Approach to Effectively Learn Complex Relationships in Heterogeneous Graphs

no code implementations26 Oct 2022 Jiwoong Park, Jisu Jeong, KyungMin Kim, Jin Young Choi

To tackle this challenge, we propose a novel concept of meta-node for message passing that can learn enriched relational knowledge from complex heterogeneous graphs without any meta-paths and meta-graphs by explicitly modeling the relations among the same type of nodes.

Contrastive Learning Graph Learning +1

Unsupervised Hyperbolic Representation Learning via Message Passing Auto-Encoders

1 code implementation CVPR 2021 Jiwoong Park, Junho Cho, Hyung Jin Chang, Jin Young Choi

Most of the existing literature regarding hyperbolic embedding concentrate upon supervised learning, whereas the use of unsupervised hyperbolic embedding is less well explored.

Representation Learning

Symmetric Graph Convolutional Autoencoder for Unsupervised Graph Representation Learning

1 code implementation ICCV 2019 Jiwoong Park, Minsik Lee, Hyung Jin Chang, Kyuewang Lee, Jin Young Choi

For the reconstruction of node features, the decoder is designed based on Laplacian sharpening as the counterpart of Laplacian smoothing of the encoder, which allows utilizing the graph structure in the whole processes of the proposed autoencoder architecture.

Clustering Graph Clustering +3

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