Search Results for author: Namkyeong Lee

Found 11 papers, 11 papers with code

Stoichiometry Representation Learning with Polymorphic Crystal Structures

1 code implementation17 Nov 2023 Namkyeong Lee, Heewoong Noh, Gyoung S. Na, Tianfan Fu, Jimeng Sun, Chanyoung Park

Despite the recent success of machine learning (ML) in materials science, its success heavily relies on the structural description of crystal, which is itself computationally demanding and occasionally unattainable.

Representation Learning

Density of States Prediction of Crystalline Materials via Prompt-guided Multi-Modal Transformer

1 code implementation NeurIPS 2023 Namkyeong Lee, Heewoong Noh, Sungwon Kim, Dongmin Hyun, Gyoung S. Na, Chanyoung Park

While previous works mainly focus on obtaining high-quality representations of crystalline materials for DOS prediction, we focus on predicting the DOS from the obtained representations by reflecting the nature of DOS: DOS determines the general distribution of states as a function of energy.

Task Relation-aware Continual User Representation Learning

1 code implementation1 Jun 2023 Sein Kim, Namkyeong Lee, Donghyun Kim, MinChul Yang, Chanyoung Park

However, since learning task-specific user representations for every task is infeasible, recent studies introduce the concept of universal user representation, which is a more generalized representation of a user that is relevant to a variety of tasks.

Continual Learning Relation +1

Task-Equivariant Graph Few-shot Learning

1 code implementation30 May 2023 Sungwon Kim, Junseok Lee, Namkyeong Lee, Wonjoong Kim, Seungyoon Choi, Chanyoung Park

To solve this problem, it is important for GNNs to be able to classify nodes with a limited number of labeled nodes, known as few-shot node classification.

Few-Shot Learning Node Classification

Shift-Robust Molecular Relational Learning with Causal Substructure

1 code implementation29 May 2023 Namkyeong Lee, Kanghoon Yoon, Gyoung S. Na, Sein Kim, Chanyoung Park

To do so, we first assume a causal relationship based on the domain knowledge of molecular sciences and construct a structural causal model (SCM) that reveals the relationship between variables.

Relational Reasoning

Conditional Graph Information Bottleneck for Molecular Relational Learning

1 code implementation29 Apr 2023 Namkyeong Lee, Dongmin Hyun, Gyoung S. Na, Sungwon Kim, Junseok Lee, Chanyoung Park

Molecular relational learning, whose goal is to learn the interaction behavior between molecular pairs, got a surge of interest in molecular sciences due to its wide range of applications.

Relational Reasoning

Predicting Density of States via Multi-modal Transformer

1 code implementation13 Mar 2023 Namkyeong Lee, Heewoong Noh, Sungwon Kim, Dongmin Hyun, Gyoung S. Na, Chanyoung Park

The density of states (DOS) is a spectral property of materials, which provides fundamental insights on various characteristics of materials.

Heterogeneous Graph Learning for Multi-modal Medical Data Analysis

1 code implementation28 Nov 2022 Sein Kim, Namkyeong Lee, Junseok Lee, Dongmin Hyun, Chanyoung Park

In this paper, we propose an effective graph-based framework called HetMed (Heterogeneous Graph Learning for Multi-modal Medical Data Analysis) for fusing the multi-modal medical data.

Graph Learning

Relational Self-Supervised Learning on Graphs

1 code implementation21 Aug 2022 Namkyeong Lee, Dongmin Hyun, Junseok Lee, Chanyoung Park

Despite their success, existing GRL methods tend to overlook an inherent distinction between images and graphs, i. e., images are assumed to be independently and identically distributed, whereas graphs exhibit relational information among data instances, i. e., nodes.

Graph Representation Learning Self-Supervised Learning

GraFN: Semi-Supervised Node Classification on Graph with Few Labels via Non-Parametric Distribution Assignment

2 code implementations4 Apr 2022 Junseok Lee, Yunhak Oh, Yeonjun In, Namkyeong Lee, Dongmin Hyun, Chanyoung Park

Despite the success of Graph Neural Networks (GNNs) on various applications, GNNs encounter significant performance degradation when the amount of supervision signals, i. e., number of labeled nodes, is limited, which is expected as GNNs are trained solely based on the supervision obtained from the labeled nodes.

Node Classification Self-Supervised Learning

Augmentation-Free Self-Supervised Learning on Graphs

1 code implementation5 Dec 2021 Namkyeong Lee, Junseok Lee, Chanyoung Park

Inspired by the recent success of self-supervised methods applied on images, self-supervised learning on graph structured data has seen rapid growth especially centered on augmentation-based contrastive methods.

Node Classification Self-Supervised Learning

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