Data Mining in Heterogeneous Information Networks with Attributes

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Most research in the area of data mining has concentrated on attribute data, i.e. on data where entities are represented by a set or vector of attributes. In the last decade, more and more network data has become available, which has driven the development of data mining methods for network data. However, in many scenarios, data can be represented as networks with node and/or edge attributes, with complex interactions between the topology of the network and the attributes. Nevertheless, data mining methods for attributed networks have received relatively little attention in the literature. Another limitation of existing methods is their focus on homogeneous networks, i.e. networks with a single type of objects and links, while real-life network data is often heterogeneous, consisting of multiple object and link types. Many systems can be modeled as heterogeneous information networks, for instance social networks among authors, papers and conferences, or biological networks integrating protein-protein interactions and gene regulations. Heterogeneous information networks with object and/or link attributes are characterized by complex interplays between the topology and the attributes of the network. In a social network, for instance, actors tend to connect to actors with similar attributes, while friends tend to become more similar to each other in the course of time.