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Abstract

Correlation Clustering is a classic clustering objective arising in numerous machine learning and data mining applications. Given a graph \(G=(V,E)\), the goal is to partition the vertex set into clusters so as to minimize the number of edges between clusters plus the number of edges missing within clusters. The problem is APX-hard and the best known polynomial time approximation factor is 1.73 by Cohen-Addad, Lee, Li, and Newman [FOCS'23]. They use an LP with \(|V|^{1/\epsilon^{\Theta(1)}}\) variables for some small \(\epsilon\). However, due to the practical relevance of correlation clustering, there has also been great interest in getting more efficient sequential and parallel algorithms. The classic combinatorial \emph{pivot} algorithm of Ailon, Charikar and Newman [JACM'08] provides a 3-approximation in linear time. Like most other algorithms discussed here, this uses randomization. Recently, Behnezhad, Charikar, Ma and Tan [FOCS'22] presented a \(3+\epsilon\)-approximate solution for solving problem in a constant number of rounds in the Massively Parallel Computation (MPC) setting. Very recently, Cao, Huang, Su [SODA'24] provided a 2.4-approximation in a polylogarithmic number of rounds in the MPC model and in \(\tilde{O} (|E|^{1.5})\) time in the classic sequential setting. They asked whether it is possible to get a better than 3-approximation in near-linear time? We resolve this problem with an efficient combinatorial algorithm providing a drastically better approximation factor. It achieves a \(\sim 2-2/13 < 1.847\)-approximation in sub-linear (\(\tilde O(|V|)\)) sequential time or in sub-linear (\(\tilde O(|V|)\)) space in the streaming setting. In the MPC model, we give an algorithm using only a constant number of rounds that achieves a \(\sim 2-1/8 < 1.876\)-approximation.

Details

1009240
Identifier / keyword
Title
Combinatorial Correlation Clustering
Publication title
arXiv.org; Ithaca
Publication year
2024
Publication date
Jul 16, 2024
Section
Computer Science
Publisher
Cornell University Library, arXiv.org
Source
arXiv.org
Place of publication
Ithaca
Country of publication
United States
University/institution
Cornell University Library arXiv.org
e-ISSN
2331-8422
Source type
Working Paper
Language of publication
English
Document type
Working Paper
Publication history
 
 
Online publication date
2024-07-17
Milestone dates
2024-04-08 (Submission v1); 2024-07-16 (Submission v2)
Publication history
 
 
   First posting date
17 Jul 2024
ProQuest document ID
3034838794
Document URL
https://www.proquest.com/working-papers/combinatorial-correlation-clustering/docview/3034838794/se-2?accountid=208611
Full text outside of ProQuest
Copyright
© 2024. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
Last updated
2024-07-18
Database
ProQuest One Academic