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1 results

  • Separable and semiparametric network-based counting processes applied to the international combat aircraft trades

  • Cornelius Fritz, Paul W. Thurner, Göran Kauermann
  • Journal:
    Network Science / Volume 9 / Issue 3 / September 2021
    Published online by Cambridge University Press:
    20 September 2021, pp. 291-311
    • Article
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  • We propose a novel tie-oriented model for longitudinal event network data. The generating mechanism is assumed to be a multivariate Poisson process that governs the onset and repetition of yearly observed events with two separate intensity functions. We apply the model to a network obtained from the yearly dyadic number of international deliveries of combat aircraft trades between 1950 and 2017. Based on the trade gravity approach, we identify economic and political factors impeding or promoting the number of transfers. Extensive dynamics as well as country heterogeneities require the specification of semiparametric time-varying effects as well as random effects. Our findings reveal strong heterogeneous as well as time-varying effects of endogenous and exogenous covariates on the onset and repetition of aircraft trade events.