Temporal Graph Kernels for Classifying Dissemination Processes

Temporal Graph Kernels for Classifying Dissemination Processes

Abstract

Many real-world graphs are temporal, e.g., in a socialnetwork persons only interact at specific points in time. Thistemporality directs possibledissemination processeson thegraph, such as the spread of rumors, fake news, or diseases.However, the current state-of-the-art methods for supervisedgraph classification are designed mainly for static graphs andmay not be able to capture temporal information. Hence,they are not powerful enough to distinguish between graphsmodeling different dissemination processes. To address this,we introduce a framework to lift standard graph kernels tothe temporal domain. We explore three different approachesand investigate the trade-offs between loss of temporalinformation and efficiency. Moreover, to handle large-scale graphs, we propose stochastic variants of our kernelswith provable approximation guarantees. We evaluate ourmethods on various real-world social networks. Our methodsbeat static kernels by a large margin in terms of accuracywhile still being scalable to large graphs and data sets. Thisconfirms that taking temporal information into account iscrucial for the successful classification of temporal graphsunder consideration of dissemination processes.Keywords—Temporal graphs, Classification, Kernel

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Authors
  • Oettershagen, Lutz
  • Kriege, Nils M.
  • Morris, Christopher
  • Mutzel, Petra
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Shortfacts
Category
Paper in Conference Proceedings or in Workshop Proceedings (Paper)
Event Title
SIAM International Conference on Data Mining (SDM)
Divisions
Data Mining and Machine Learning
Event Location
Cincinnati, Ohio, USA
Event Type
Conference
Event Dates
07.-09.05.2020
Series Name
Proceedings of the 2020 SIAM International Conference on Data Mining (SDM)
ISSN/ISBN
978-1-61197-623-6
Publisher
SIAM
Page Range
pp. 496-504
Date
2020
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