Heinrich, GregorEichler, GeraldKropf, PeterLechner, UlrikeMeesad, PhayungUnger, Herwig2019-01-112019-01-112010978-3-88579-259-8https://dl.gi.de/handle/20.500.12116/19017The article presents a model of the structural properties of virtual communities and the information they can access. It argues that a large part of the information – and actually knowledge – present in virtual communities can be identified by a graph structure that consists of three node types – actors, media and qualities – as well as the relations that connect them. Based on these relations, information retrieval and other inference mechanisms can be mapped into the model.enText/Conference Paper1617-5468