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Explainable and Efficient Link Prediction in Real-World Network Data

  • Jesper E. van Engelen
  • Hanjo D. Boekhout
  • Frank W. TakesEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9897)

Abstract

Data that involves some sort of relationship or interaction can be represented, modelled and analyzed using the notion of a network. To understand the dynamics of networks, the link prediction problem is concerned with predicting the evolution of the topology of a network over time. Previous work in this direction has largely focussed on finding an extensive set of features capable of predicting the formation of a link, often within some domain-specific context. This sometimes results in a “black box” type of approach in which it is unclear how the (often computationally expensive) features contribute to the accuracy of the final predictor. This paper counters these problems by categorising the large set of proposed link prediction features based on their topological scope, and showing that the contribution of particular categories of features can actually be explained by simple structural properties of the network. An approach called the Efficient Feature Set is presented that uses a limited but explainable set of computationally efficient features that within each scope captures the essential network properties. Its performance is experimentally verified using a large number of diverse real-world network datasets. The result is a generic approach suitable for consistently predicting links with high accuracy.

Keywords

Target Node Link Prediction Directed Network Short Path Length Node Feature 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer International Publishing AG 2016

Authors and Affiliations

  • Jesper E. van Engelen
    • 1
  • Hanjo D. Boekhout
    • 1
  • Frank W. Takes
    • 1
    • 2
    Email author
  1. 1.LIACSLeiden UniversityLeidenThe Netherlands
  2. 2.AISSRUniversity of AmsterdamAmsterdamThe Netherlands

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