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Zixing Song

16 accepted papers

2026

MMPG: MoE-based Adaptive Multi-Perspective Graph Fusion for Protein Representation Learning

AAAI 2026technical

Graph Neural Networks (GNNs) have been widely adopted for Protein Representation Learning (PRL), as residue interaction networks can be naturally represented as graphs. Current GNN-based PRL methods typically rely on single-perspective graph construction strategies, which capture partial properties

Cited by 0SourcePDFScholar
2026

PointNSP: Autoregressive 3D Point Cloud Generation with Next-Scale Level-of-Detail Prediction

CVPR 2026

Autoregressive point cloud generation has long lagged behind diffusion-based approaches in quality. The performance gap stems from the fact that autoregressive models impose an artificial ordering on inherently unordered point sets, forcing shape generation to proceed as a sequence of local predicti

Cited by 4SourcecodeScholar
2025

Context-aware Inductive Knowledge Graph Completion with Latent Type Constraints and Subgraph Reasoning

AAAI 2025technical

Inductive knowledge graph completion (KGC) aims to predict missing triples with unseen entities. Recent works focus on modeling reasoning paths between the head and tail entity as direct supporting evidence. However, these methods depend heavily on the existence and quality of reasoning paths, which…

2025

Domain-Adapted Diffusion Model for PROTAC Linker Design Through the Lens of Density Ratio in Chemical Space

ICML 2025poster

Proteolysis-targeting chimeras (PROTACs) are a groundbreaking technology for targeted protein degradation, but designing effective linkers that connect two molecular fragments to form a drug-candidate PROTAC molecule remains a key challenge. While diffusion models show promise in molecular generatio…

Cited by 0SourcePDFScholar
2025

Mitigating Over-Squashing in Graph Neural Networks by Spectrum-Preserving Sparsification

ICML 2025poster

The message-passing paradigm of Graph Neural Networks often struggles with exchanging information across distant nodes typically due to structural bottlenecks in certain graph regions, a limitation known as over-squashing. To reduce such bottlenecks, graph rewiring, which modifies graph topology, ha…

Cited by 0SourcePDFScholar
2024

A Diffusion-Based Pre-training Framework for Crystal Property Prediction

AAAI 2024technical

Many significant problems involving crystal property prediction from 3D structures have limited labeled data due to expensive and time-consuming physical simulations or lab experiments. To overcome this challenge, we propose a pretrain-finetune framework for the crystal property prediction task name…

Cited by 13SourcePDFScholar
2024

A Systematic Survey on Federated Semi-supervised Learning

IJCAI 2024poster

Federated learning (FL) revolutionizes distributed machine learning by enabling devices to collaboratively learn a model while maintaining data privacy. However, FL usually faces a critical challenge with limited labeled data, making semi-supervised learning (SSL) crucial for utilizing abundant unla…

Cited by 2SourcePDFScholar
2024

Towards Geometric Normalization Techniques in SE(3) Equivariant Graph Neural Networks for Physical Dynamics Simulations

IJCAI 2024poster

SE(3) equivariance is a fundamental property that is highly desirable to maintain in physical dynamics modeling. This property ensures neural outputs to remain robust when the inputs are translated or rotated. Recently, there have been several proposals for SE(3) equivariant graph neural networks (G…

Cited by 0SourcePDFScholar
2023

Graph Component Contrastive Learning for Concept Relatedness Estimation

AAAI 2023technical

Concept relatedness estimation (CRE) aims to determine whether two given concepts are related. Existing methods only consider the pairwise relationship between concepts, while overlooking the higher-order relationship that could be encoded in a concept-level graph structure. We discover that this un…

2023

Mitigating the Popularity Bias of Graph Collaborative Filtering: A Dimensional Collapse Perspective

NeurIPS 2023spotlight

Graph-based Collaborative Filtering (GCF) is widely used in personalized recommendation systems. However, GCF suffers from a fundamental problem where features tend to occupy the embedding space inefficiently (by spanning only a low-dimensional subspace). Such an effect is characterized in GCF by th…

Cited by 27SourcePDFScholar
2023

No Change, No Gain: Empowering Graph Neural Networks with Expected Model Change Maximization for Active Learning

NeurIPS 2023spotlight

Graph Neural Networks (GNNs) are crucial for machine learning applications with graph-structured data, but their success depends on sufficient labeled data. We present a novel active learning (AL) method for GNNs, extending the Expected Model Change Maximization (EMCM) principle to improve predictio…

Cited by 10SourcePDFScholar
2023

Optimal Block-wise Asymmetric Graph Construction for Graph-based Semi-supervised Learning

NeurIPS 2023poster

Graph-based semi-supervised learning (GSSL) serves as a powerful tool to model the underlying manifold structures of samples in high-dimensional spaces. It involves two phases: constructing an affinity graph from available data and inferring labels for unlabeled nodes on this graph. While numerous a…

Cited by 14SourcePDFScholar
2023

Predicting Global Label Relationship Matrix for Graph Neural Networks under Heterophily

NeurIPS 2023poster

Graph Neural Networks (GNNs) have been shown to achieve remarkable performance on node classification tasks by exploiting both graph structures and node features. The majority of existing GNNs rely on the implicit homophily assumption. Recent studies have demonstrated that GNNs may struggle to model…

Cited by 24SourcePDFScholar
2023

Spectral Feature Augmentation for Graph Contrastive Learning and Beyond

AAAI 2023technical

Although augmentations (e.g., perturbation of graph edges, image crops) boost the efficiency of Contrastive Learning (CL), feature level augmentation is another plausible, complementary yet not well researched strategy. Thus, we present a novel spectral feature argumentation for contrastive learni…

2022

Hierarchical Heterogeneous Graph Attention Network for Syntax-Aware Summarization

AAAI 2022technical

The task of summarization often requires a non-trivial understanding of the given text at the semantic level. In this work, we essentially incorporate the constituent structure into the single document summarization via the Graph Neural Networks to learn the semantic meaning of tokens. More specific…