Effective K-Vertex connected component detection in large-scale networks

• Main Authors: LI, Yuan, ZHAO, Yuha, WANG, Guoren, ZHU, Feida, WU, Yubao, SHI, Shenglei
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2017
• Subjects: Component detection; k-vertex connected component (k-VCC); Large network; Databases and Information Systems; Theory and Algorithms
• Online Access: https://ink.library.smu.edu.sg/sis_research/3617; https://ink.library.smu.edu.sg/context/sis_research/article/4618/viewcontent/EffectiveK_VertexConnectedComp_2017_afv.pdf
• Institution: Singapore Management University

Finding components with high connectivity is an important problem in component detection with a wide range of applications, e.g., social network analysis, web-page research and bioinformatics. In particular, k-edge connected component (k-ECC) has recently been extensively studied to discover disjoint components. Yet many real applications present needs and challenges for overlapping components. In this paper, we propose a k-vertex connected component (k-VCC) model, which is much more cohesive and therefore allows overlapping between components. To find k-VCCs, a top-down framework is first developed to find the exact k-VCCs. To further reduce the high computational cost for input networks of large sizes, a bottom-up framework is then proposed. Instead of using the structure of the entire network, it locally identifies the seed subgraphs, and obtains the heuristic k-VCCs by expanding and merging these seed subgraphs. Comprehensive experimental results on large real and synthetic networks demonstrate the efficiency and effectiveness of our approaches.