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The evolution of a mobile payment solution network

Published online by Cambridge University Press:  17 April 2019

Kjersti Aas  and
Hanne Rognebakke
Kjersti Aas*
Affiliation:
Norwegian Computing Center, P. O. Box 114, Blindern, N-0314 Oslo, Norway
Hanne Rognebakke
Affiliation:
Norwegian Computing Center, P. O. Box 114, Blindern, N-0314 Oslo, Norway
*
*Corresponding author. Emails: Kjersti.Aas@nr.no, Hanne.Rognebakke@nr.no
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Abstract

Vipps is a peer-to-peer mobile payment solution launched by Norway’s largest financial services group DNB. The Vipps transaction data may be viewed as a graph with users corresponding to the nodes, and the financial transactions between the users defining the edges. We have followed the evolution of this graph from May 2015 to September 2016. This is a unique data set, as information about transactions of individuals is usually not available for research. In this paper, we use an advanced statistical model where preferential attachment is combined with fitness. We show that the intrinsic quality of the nodes in the Vipps network plays an important part in the evolution of the network. This insight may, e.g., be used to identify influential nodes for viral marketing.

Keywords

mobile payment solutionnetwork evolutionpreferential attachmentfitness
Type
Original Article
Information
Network Science , Volume 7 , Issue 3 , September 2019 , pp. 422 - 437
Copyright
© Cambridge University Press 2019 

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