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Yongchao Liu

7 accepted papers

2026

GDGB: A Benchmark for Generative Dynamic Text-Attributed Graph Learning

ICLR 2026poster

Dynamic Text-Attributed Graphs (DyTAGs), which intricately integrate structural, temporal, and textual attributes, are crucial for modeling complex real-world systems. However, most existing DyTAG datasets exhibit poor textual quality, which severely limits their utility for generative DyTAG tasks r…

Cited by 0SourcecodeScholar
2026

M²VAE: Multi-Modal Multi-View Variational Autoencoder for Cold-start Item Recommendation

AAAI 2026technical

Cold-start item recommendation is a significant challenge in recommendation systems, particularly when new items are introduced without any historical interaction data. While existing methods leverage multi-modal content to alleviate the cold-start issue, they often neglect the inherent multi-view s

Cited by 0SourcePDFScholar
2026

Robustness in Text-Attributed Graph Learning: Insights, Trade-offs, and New Defenses

ICLR 2026poster

While Graph Neural Networks (GNNs) and Large Language Models (LLMs) are powerful approaches for learning on Text-Attributed Graphs (TAGs), a comprehensive understanding of their robustness remains elusive. Current evaluations are fragmented, failing to systematically investigate the distinct effect…

Cited by 0SourcecodeScholar
2025

M³GQA: A Multi-Entity Multi-Hop Multi-Setting Graph Question Answering Benchmark

ACL 2025long

Recently, GraphRAG systems have achieved remarkable progress in enhancing the performance and reliability of large language models (LLMs). However, most previous benchmarks are template-based and primarily focus on few-entity queries, which are monotypic and simplistic, failing to offer comprehensiv…

2024

Integer Is Enough: When Vertical Federated Learning Meets Rounding

AAAI 2024technical

Vertical Federated Learning (VFL) is a solution increasingly used by companies with the same user group but differing features, enabling them to collaboratively train a machine learning model. VFL ensures that clients exchange intermediate results extracted by their local models, without sharing ra…

Cited by 2SourcePDFScholar
2023

AGD: an Auto-switchable Optimizer using Stepwise Gradient Difference for Preconditioning Matrix

NeurIPS 2023poster

Adaptive optimizers, such as Adam, have achieved remarkable success in deep learning. A key component of these optimizers is the so-called preconditioning matrix, providing enhanced gradient information and regulating the step size of each gradient direction. In this paper, we propose a novel approa…

2021

Order Regularization on Ordinal Loss for Head Pose, Age and Gaze Estimation

AAAI 2021technical

Ordinal loss is widely used in solving regression problems with deep learning technologies. Its basic idea is to convert regression to classification while preserving the natural order. However, the order constraint is enforced only by ordinal label implicitly, leading to the real output values not…

Cited by 8SourcePDFScholar