Ranking-Based Clustering of Heterogeneous Information Networks with Star Network Schema

A heterogeneous information network is an information network composed of multiple types of objects. Cluster- ing on such a network may lead to better understanding of both hidden structures of the network and the individual role played by every object in each cluster. However, although clustering on homogeneous networks has been studied over decades, clustering on heterogeneous networks has not been addressed until recently. A recent study proposed a new algorithm, RankClus, for clustering on bi-typed heterogeneous networks. However, a real-world network may consist of more than two types, and the interactions among multi-typed objects play a key role at disclosing the rich semantics that a network carries. In this paper, we study clustering of multi-typed heteroge- neous networks with a star network schema and propose a novel algorithm, NetClus, that utilizes links across multi- typed objects to generate high-quality net-clusters. An it- erative enhancement method is developed that leads to ef- fective ranking-based clustering in such heterogeneous net- works. Our experiments on DBLP data show that NetClus generates more accurate clustering results than the baseline topic model algorithm PLSA and the recently proposed al- gorithm, RankClus. Further, NetClus generates informative clusters, presenting good ranking and cluster membership information for each attribute object in each net-cluster.