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Yixuan He

7 accepted papers

2026

When Do Graph Foundation Models Transfer? A Data-Centric Theory

ICML 2026poster

Graph foundation models (GFMs) aim to reuse a single backbone across diverse graph domains, yet their transfer is often uneven and can exhibit negative transfer. While most prior work improves transfer through architectural or adaptation choices, we ask a data-centric question: *which properties of …

Cited by 0SourceScholar
2024

Generalization Error of Graph Neural Networks in the Mean-field Regime

ICML 2024poster

This work provides a theoretical framework for assessing the generalization error of graph neural networks in the over-parameterized regime, where the number of parameters surpasses the quantity of data points. We explore two widely utilized types of graph neural networks: graph convolutional neural…

2024

Robust Angular Synchronization via Directed Graph Neural Networks

ICLR 2024poster

The angular synchronization problem aims to accurately estimate (up to a constant additive phase) a set of unknown angles $\theta_1, \dots, \theta_n\in[0, 2\pi)$ from $m$ noisy measurements of their offsets $\theta_i-\theta_j$ mod $2\pi.$ Applications include, for example, sensor network localizatio…

2023

DIFFormer: Scalable (Graph) Transformers Induced by Energy Constrained Diffusion

ICLR 2023top-25%

Real-world data generation often involves complex inter-dependencies among instances, violating the IID-data hypothesis of standard learning paradigms and posing a challenge for uncovering the geometric structures for learning desired instance representations. To this end, we introduce an energy con…

2022

GNNRank: Learning Global Rankings from Pairwise Comparisons via Directed Graph Neural Networks

ICML 2022spotlight

Recovering global rankings from pairwise comparisons has wide applications from time synchronization to sports team ranking. Pairwise comparisons corresponding to matches in a competition can be construed as edges in a directed graph (digraph), whose nodes represent e.g. competitors with an unknown…

2021

MagNet: A Neural Network for Directed Graphs

NeurIPS 2021poster

The prevalence of graph-based data has spurred the rapid development of graph neural networks (GNNs) and related machine learning algorithms. Yet, despite the many datasets naturally modeled as directed graphs, including citation, website, and traffic networks, the vast majority of this research foc…