This seminar is hosted by the Oxford Martin Programme on Complexity, The Institute for New Economic Thinking at the Oxford Martin School and The CABDyN Complexity Centre
Speaker: Sebastian Ahnert , Royal Society University Research Fellow, TCM, Cavendish Laboratory, University of Cambridge
Abstract: We introduce a framework for compressing complex networks into powergraphs with overlapping powernodes. The most compressible components of a given network provide a highly informative sketch of its overall architecture. In addition this procedure also gives rise to a novel, link?based definition of overlapping node communities in which nodes are defined by their relationships with sets of other nodes, rather than through connections within the community. We show that this approach yields valuable insights into the large?scale structure of transcription networks, food webs, and social networks, and allows for novel ways in which network architecture can be studied, defined and classified. Furthermore, when paired with enrichment analysis of node classification terms, this method can provide a concise overview of the dominant conceptual relationships that define the network.
Venue: Roy Griffiths Room, Keble College, Oxford
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