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1.北京信息科技大学,北京 102206
2.香港浸会大学,香港 999077
Received:19 August 2024,
Revised:2024-12-16,
Published:25 February 2025
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张安冉, 王兴芬, 赵雨涵, 等. 基于图组合优化的高效社区搜索[J]. 电子学报, 2025, 53(02): 440-450.
ZHANG An-ran, WANG Xing-fen, ZHAO Yu-han, et al. CS-ROMF:Efficient Community Search Based on Graph Combinatorial Optimization[J]. Acta Electronica Sinica, 2025, 53(02): 440-450.
张安冉, 王兴芬, 赵雨涵, 等. 基于图组合优化的高效社区搜索[J]. 电子学报, 2025, 53(02): 440-450. DOI:10.12263/DZXB.20240767
ZHANG An-ran, WANG Xing-fen, ZHAO Yu-han, et al. CS-ROMF:Efficient Community Search Based on Graph Combinatorial Optimization[J]. Acta Electronica Sinica, 2025, 53(02): 440-450. DOI:10.12263/DZXB.20240767
针对大多数基于图神经网络(Graph Neural Network,GNN)的社区搜索方法中存在的时间开销巨大和“搭便车”效应问题,本文提出一种基于图组合优化的高效社区搜索模型(Efficient Community Search Based on Graph Combinatorial Optimization,CS-ROMF).该模型设计基于GNN的社区定位器来快速定位查询节点的潜在社区,减少时间开销.在此基础上设计基于强化学习(Reinforcement Learning,RL)的社区优化器调整候选社区的结构,减轻“搭便车”效应.在5个具有真实社区的数据集上进行大量实验,结果表明CS-ROMF在所有评估指标上均优于基线模型.其中,相比结果最好的基线模型,CS-ROMF在
F
1
值、Jaccard值以及NMI上分别最高提升14.99%、20.67%和21.37%,表明CS-ROMF减轻了“搭便车”效应.同时,CS-ROMF能够显著提升搜索效率,其运行速度比基于GNN的基线模型最多快10倍.
To address the significant time overhead and free-rider effect in most GNN-based community search methods
this paper proposes an efficient community search based on graph combinatorial optimization (CS-ROMF). CS-ROMF designs a GNN-based community locator to quickly pinpoint potential communities of the query nodes
thereby reducing time overhead. On this basis
CS-ROMF further designs an RL-based community optimizer to adjust the structure of candidate communities
mitigating the free-rider effect. Experiments conducted on five real-world datasets with true communities demonstrate that CS-ROMF outperforms advanced community search methods across all evaluation metrics. Specifically
compared to the best baseline model
CS-ROMF achieves maximum improvements of 14.99%
20.67%
and 21.37% in
F
1
score
Jaccard score
and NMI
respectively. Additionally
CS-ROMF can significantly improve search efficiency
running up to 10 times faster than the baseline model based on GNN.
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