Search Results for author: Pan Peng

Found 9 papers, 2 papers with code

A Differentially Private Clustering Algorithm for Well-Clustered Graphs

no code implementations21 Mar 2024 Weiqiang He, Hendrik Fichtenberger, Pan Peng

We study differentially private (DP) algorithms for recovering clusters in well-clustered graphs, which are graphs whose vertex set can be partitioned into a small number of sets, each inducing a subgraph of high inner conductance and small outer conductance.

Clustering

A Sublinear-Time Spectral Clustering Oracle with Improved Preprocessing Time

no code implementations NeurIPS 2023 Ranran Shen, Pan Peng

We address the problem of designing a sublinear-time spectral clustering oracle for graphs that exhibit strong clusterability.

Clustering

Sublinear-Time Clustering Oracle for Signed Graphs

1 code implementation28 Jun 2022 Stefan Neumann, Pan Peng

We provide a local clustering oracle for signed graphs with such a clear community structure, that can answer membership queries, i. e., "Given a vertex $v$, which community does $v$ belong to?

Clustering

Towards a Query-Optimal and Time-Efficient Algorithm for Clustering with a Faulty Oracle

no code implementations18 Jun 2021 Pan Peng, Jiapeng Zhang

In this model, given a set of $n$ items which belong to $k$ unknown groups (or clusters), our goal is to recover the clusters by asking pairwise queries to an oracle.

Clustering Entity Resolution +2

Local Algorithms for Estimating Effective Resistance

no code implementations7 Jun 2021 Pan Peng, Daniel Lopatta, Yuichi Yoshida, Gramoz Goranci

Effective resistance is an important metric that measures the similarity of two vertices in a graph.

Clustering Graph Clustering +1

Time Complexity Analysis of Randomized Search Heuristics for the Dynamic Graph Coloring Problem

no code implementations26 May 2021 Jakob Bossek, Frank Neumann, Pan Peng, Dirk Sudholt

In most settings the expected reoptimization time for such tailored algorithms is linear in the number of added edges.

Average Sensitivity of Spectral Clustering

no code implementations7 Jun 2020 Pan Peng, Yuichi Yoshida

To make reliable and efficient decisions based on spectral clustering, we assess the stability of spectral clustering against edge perturbations in the input graph using the notion of average sensitivity, which is the expected size of the symmetric difference of the output clusters before and after we randomly remove edges.

Clustering

More Effective Randomized Search Heuristics for Graph Coloring Through Dynamic Optimization

no code implementations28 May 2020 Jakob Bossek, Frank Neumann, Pan Peng, Dirk Sudholt

We show that EAs can solve the graph coloring problem for bipartite graphs more efficiently by using dynamic optimization.

Evolutionary Algorithms

Mixed-Order Spectral Clustering for Networks

1 code implementation25 Dec 2018 Yan Ge, Haiping Lu, Pan Peng

This paper proposes a new Mixed-Order Spectral Clustering (MOSC) approach to model both second-order and third-order structures simultaneously, with two MOSC methods developed based on Graph Laplacian (GL) and Random Walks (RW).

Clustering

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