International Conference on Information and Knowledge Technology

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An Efficient Link Prediction Method using Community Structures

Authors :

Hadi Shakibian¹ Setareh Mokhtari²

1- دانشگاه الزهرا(س) 2- Tarbiat modares university

Keywords :

complex network, link prediction, community detection, common neighbors

Abstract :

The ‎problem ‎of ‎link ‎prediction/recommendation ‎requires ‎to ‎evaluate the scores of $‎‎‎\mathcal{O}(n^2)‎$ ‎node ‎pairs.‎ While this exhaustive search could be ‎‎‎‎‎‎‎computationally very ‎expensive, ‏‎it ‎might also produces ‎‎many ‎zero ‎links scores‎‎.‎ In this paper, we propose a simple, efficient, and scalable link prediction method based on network communities.‎ Given a complex network‏ with community structures, the global link prediction problem is divided into ‎several sub-problems. Each sub-problem is responsible for performing link prediction inside each community. ‎The outputs of the sub-problems are combined to the final high-scored links. ‎ The results on several complex networks show the efficiency of the proposed method ‎without sacrificing its prediction accuracy.‎‎