Search Results for author: Zhuo Feng

Found 18 papers, 5 papers with code

Researchy Questions: A Dataset of Multi-Perspective, Decompositional Questions for LLM Web Agents

no code implementations27 Feb 2024 Corby Rosset, Ho-Lam Chung, Guanghui Qin, Ethan C. Chau, Zhuo Feng, Ahmed Awadallah, Jennifer Neville, Nikhil Rao

We show that users spend a lot of ``effort'' on these questions in terms of signals like clicks and session length, and that they are also challenging for GPT-4.

Known Unknowns Question Answering +1

inGRASS: Incremental Graph Spectral Sparsification via Low-Resistance-Diameter Decomposition

no code implementations26 Feb 2024 Ali Aghdaei, Zhuo Feng

This work presents inGRASS, a novel algorithm designed for incremental spectral sparsification of large undirected graphs.

SAGMAN: Stability Analysis of Graph Neural Networks on the Manifolds

no code implementations13 Feb 2024 Wuxinlin Cheng, Chenhui Deng, Ali Aghdaei, Zhiru Zhang, Zhuo Feng

Modern graph neural networks (GNNs) can be sensitive to changes in the input graph structure and node features, potentially resulting in unpredictable behavior and degraded performance.

Dimensionality Reduction Graph Embedding +1

A Topology-aware Graph Coarsening Framework for Continual Graph Learning

no code implementations5 Jan 2024 Xiaoxue Han, Zhuo Feng, Yue Ning

Continual learning on graphs tackles the problem of training a graph neural network (GNN) where graph data arrive in a streaming fashion and the model tends to forget knowledge from previous tasks when updating with new data.

Continual Learning Graph Learning

SF-SGL: Solver-Free Spectral Graph Learning from Linear Measurements

no code implementations9 Feb 2023 Ying Zhang, Zhiqiang Zhao, Zhuo Feng

This work introduces a highly-scalable spectral graph densification framework (SGL) for learning resistor networks with linear measurements, such as node voltages and currents.

Graph Learning

HyperEF: Spectral Hypergraph Coarsening by Effective-Resistance Clustering

1 code implementation26 Oct 2022 Ali Aghdaei, Zhuo Feng

This paper introduces a scalable algorithmic framework (HyperEF) for spectral coarsening (decomposition) of large-scale hypergraphs by exploiting hyperedge effective resistances.

Clustering hypergraph partitioning

GARNET: Reduced-Rank Topology Learning for Robust and Scalable Graph Neural Networks

1 code implementation30 Jan 2022 Chenhui Deng, Xiuyu Li, Zhuo Feng, Zhiru Zhang

Graph neural networks (GNNs) have been increasingly deployed in various applications that involve learning on non-Euclidean data.

Adversarial Robustness

GARNET: A Spectral Approach to Robust and Scalable Graph Neural Networks

no code implementations29 Sep 2021 Chenhui Deng, Xiuyu Li, Zhuo Feng, Zhiru Zhang

In this paper, we propose GARNET, a scalable spectral method to boost the adversarial robustness of GNN models for both homophilic and heterophilic graphs.

Adversarial Robustness Graph Embedding

HyperSF: Spectral Hypergraph Coarsening via Flow-based Local Clustering

1 code implementation17 Aug 2021 Ali Aghdaei, Zhiqiang Zhao, Zhuo Feng

To address the ever-increasing computational challenges, graph coarsening can be potentially applied for preprocessing a given hypergraph by aggressively aggregating its vertices (nodes).

Clustering hypergraph partitioning

SGL: Spectral Graph Learning from Measurements

no code implementations16 Apr 2021 Zhuo Feng

Through extensive experiments for a variety of real-world test cases, we show that the proposed approach is highly scalable for learning ultra-sparse resistor networks without sacrificing solution quality.

Graph Learning

SPADE: A Spectral Method for Black-Box Adversarial Robustness Evaluation

2 code implementations7 Feb 2021 Wuxinlin Cheng, Chenhui Deng, Zhiqiang Zhao, Yaohui Cai, Zhiru Zhang, Zhuo Feng

A black-box spectral method is introduced for evaluating the adversarial robustness of a given machine learning (ML) model.

Adversarial Robustness Graph Embedding

A Unified Spectral Sparsification Framework for Directed Graphs

no code implementations1 Jan 2021 Ying Zhang, Zhiqiang Zhao, Zhuo Feng

For the first time, we prove the existence of linear-sized spectral sparsifiers for general directed graphs and introduce a practically-efficient and unified spectral graph sparsification approach that allows sparsifying real-world, large-scale directed and undirected graphs with guaranteed preservation of the original graph spectra.

Graph Learning via Spectral Densification

no code implementations1 Jan 2021 Zhuo Feng, Yongyu Wang, Zhiqiang Zhao

Graph learning plays important role in many data mining and machine learning tasks, such as manifold learning, data representation and analysis, dimensionality reduction, data clustering, and visualization, etc.

BIG-bench Machine Learning Clustering +2

SF-GRASS: Solver-Free Graph Spectral Sparsification

no code implementations17 Aug 2020 Ying Zhang, Zhiqiang Zhao, Zhuo Feng

Recent spectral graph sparsification techniques have shown promising performance in accelerating many numerical and graph algorithms, such as iterative methods for solving large sparse matrices, spectral partitioning of undirected graphs, vectorless verification of power/thermal grids, representation learning of large graphs, etc.

Representation Learning

GRASPEL: Graph Spectral Learning at Scale

no code implementations23 Nov 2019 Yongyu Wang, Zhiqiang Zhao, Zhuo Feng

Learning meaningful graphs from data plays important roles in many data mining and machine learning tasks, such as data representation and analysis, dimension reduction, data clustering, and visualization, etc.

BIG-bench Machine Learning Clustering +2

GraphZoom: A multi-level spectral approach for accurate and scalable graph embedding

1 code implementation ICLR 2020 Chenhui Deng, Zhiqiang Zhao, Yongyu Wang, Zhiru Zhang, Zhuo Feng

GraphZoom first performs graph fusion to generate a new graph that effectively encodes the topology of the original graph and the node attribute information.

Attribute Graph Embedding

Similarity-Aware Spectral Sparsification by Edge Filtering

no code implementations ACM 2017 Zhuo Feng

In recent years, spectral graph sparsification techniques that can compute ultra-sparse graph proxies have been extensively studied for accelerating various numerical and graph-related applications.

Towards Scalable Spectral Clustering via Spectrum-Preserving Sparsification

no code implementations12 Oct 2017 Yongyu Wang, Zhuo Feng

The eigendeomposition of nearest-neighbor (NN) graph Laplacian matrices is the main computational bottleneck in spectral clustering.

Clustering

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