Search Results for author: Xiyuan Wang

Found 14 papers, 8 papers with code

On the Completeness of Invariant Geometric Deep Learning Models

no code implementations7 Feb 2024 Zian Li, Xiyuan Wang, Shijia Kang, Muhan Zhang

Our results fill the gap in the theoretical power of invariant models, contributing to a rigorous and comprehensive understanding of their capabilities.

Computational Efficiency Inductive Bias

Latent Graph Diffusion: A Unified Framework for Generation and Prediction on Graphs

no code implementations4 Feb 2024 Zhou Cai, Xiyuan Wang, Muhan Zhang

We first propose Latent Graph Diffusion (LGD), a generative model that can generate node, edge, and graph-level features of all categories simultaneously.

Graph Learning regression

PyTorch Geometric High Order: A Unified Library for High Order Graph Neural Network

1 code implementation28 Nov 2023 Xiyuan Wang, Muhan Zhang

We introduce PyTorch Geometric High Order (PyGHO), a library for High Order Graph Neural Networks (HOGNNs) that extends PyTorch Geometric (PyG).

Facilitating Graph Neural Networks with Random Walk on Simplicial Complexes

1 code implementation NeurIPS 2023 Cai Zhou, Xiyuan Wang, Muhan Zhang

Second, on $1$-simplices or edge level, we bridge edge-level random walk and Hodge $1$-Laplacians and design corresponding edge PE respectively.

Distance-Restricted Folklore Weisfeiler-Leman GNNs with Provable Cycle Counting Power

1 code implementation NeurIPS 2023 Junru Zhou, Jiarui Feng, Xiyuan Wang, Muhan Zhang

Many of the proposed GNN models with provable cycle counting power are based on subgraph GNNs, i. e., extracting a bag of subgraphs from the input graph, generating representations for each subgraph, and using them to augment the representation of the input graph.

P-vectors: A Parallel-Coupled TDNN/Transformer Network for Speaker Verification

no code implementations24 May 2023 Xiyuan Wang, Fangyuan Wang, Bo Xu, Liang Xu, Jing Xiao

Typically, the Time-Delay Neural Network (TDNN) and Transformer can serve as a backbone for Speaker Verification (SV).

Speaker Verification

From Relational Pooling to Subgraph GNNs: A Universal Framework for More Expressive Graph Neural Networks

1 code implementation8 May 2023 Cai Zhou, Xiyuan Wang, Muhan Zhang

Relational pooling is a framework for building more expressive and permutation-invariant graph neural networks.

Improving Graph Neural Networks on Multi-node Tasks with Labeling Tricks

no code implementations20 Apr 2023 Xiyuan Wang, Pan Li, Muhan Zhang

When we want to learn a node-set representation involving multiple nodes, a common practice in previous works is to directly aggregate the single-node representations obtained by a GNN.

Hyperedge Prediction Representation Learning

Neural Common Neighbor with Completion for Link Prediction

1 code implementation2 Feb 2023 Xiyuan Wang, Haotong Yang, Muhan Zhang

Despite its outstanding performance in various graph tasks, vanilla Message Passing Neural Network (MPNN) usually fails in link prediction tasks, as it only uses representations of two individual target nodes and ignores the pairwise relation between them.

Link Prediction

Graph Neural Network with Local Frame for Molecular Potential Energy Surface

1 code implementation1 Aug 2022 Xiyuan Wang, Muhan Zhang

Projected onto a frame, equivariant features like 3D coordinates are converted to invariant features, so that we can capture geometric information with these projections and decouple the symmetry requirement from GNN design.

Representation Learning

Two-Dimensional Weisfeiler-Lehman Graph Neural Networks for Link Prediction

1 code implementation20 Jun 2022 Yang Hu, Xiyuan Wang, Zhouchen Lin, Pan Li, Muhan Zhang

As pointed out by previous works, this two-step procedure results in low discriminating power, as 1-WL-GNNs by nature learn node-level representations instead of link-level.

Link Prediction Vocal Bursts Valence Prediction

How Powerful are Spectral Graph Neural Networks

2 code implementations23 May 2022 Xiyuan Wang, Muhan Zhang

We also establish a connection between the expressive power of spectral GNNs and Graph Isomorphism (GI) testing, the latter of which is often used to characterize spatial GNNs' expressive power.

Decentralized Baseband Processing with Gaussian Message Passing Detection for Uplink Massive MU-MIMO Systems

no code implementations22 May 2021 Zhenyu Zhang, Yuanyuan Dong, Keping Long, Xiyuan Wang, Xiaoming Dai

Decentralized baseband processing (DBP) architecture, which partitions the base station antennas into multiple antenna clusters, has been recently proposed to alleviate the excessively high interconnect bandwidth, chip input/output data rates, and detection complexity for massive multi-user multiple-input multiple-output (MU-MIMO) systems.

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