← Search

Han Xie

8 accepted papers

2026

Feedback Control for Multi-Objective Graph Self-Supervision

ICML 2026poster

Can multi-task self-supervised learning on graphs be coordinated without the usual tug-of-war between objectives? Graph self-supervised learning (SSL) offers a growing toolbox of pretext objectives—mutual information, reconstruction, contrastive learning—yet combining them reliably remains a challen…

Cited by 0SourceScholar
2026

Relatron: Automating Relational Machine Learning over Relational Databases

ICLR 2026poster

Predictive modeling over relational databases (RDBs) powers applications in various domains, yet remains challenging due to the need to capture both cross-table dependencies and complex feature interactions. Recent Relational Deep Learning (RDL) methods automate feature engineering via message passi…

Cited by 0SourcecodeScholar
2025

AutoG: Towards automatic graph construction from tabular data

ICLR 2025poster

Recent years have witnessed significant advancements in graph machine learning (GML), with its applications spanning numerous domains. However, the focus of GML has predominantly been on developing powerful models, often overlooking a crucial initial step: constructing suitable graphs from common da…

2025

GuardAgent: Safeguard LLM Agents via Knowledge-Enabled Reasoning

ICML 2025poster

The rapid advancement of large language model (LLM) agents has raised new concerns regarding their safety and security. In this paper, we propose GuardAgent, the first guardrail agent to protect target agents by dynamically checking whether their actions satisfy given safety guard requests. Specific…

2025

Spectro-Riemannian Graph Neural Networks

ICLR 2025poster

Can integrating spectral and curvature signals unlock new potential in graph representation learning? Non-Euclidean geometries, particularly Riemannian manifolds such as hyperbolic (negative curvature) and spherical (positive curvature), offer powerful inductive biases for embedding complex graph st…

Cited by 0SourcePDFScholar
2024

Real-Time Support Terrain Mapping and Terrain Adaptive Local Planning for Quadruped Robots

RA-L 2024

The expanding application of quadruped robots in complex environments poses new challenges to their perception and planning systems. This letter proposes a novel approach for local perception and planning, which integrates exteroception, such as laser point clouds and depth images, with propriocepti

Cited by 6SourceScholar
2023

Real-Time Elevation Mapping with Bayesian Ground Filling and Traversability Analysis for UGV Navigation

IROS 2023poster

Unmanned ground vehicles (UGVs) require effective perception and analysis of their surrounding terrain for safe operation. This paper presents a novel approach to their local elevation mapping and traversability analysis using sparse data from a single LiDAR sensor, which can generate a dense local…

Cited by 3SourceScholar