Brazilian Multiplex Airline Networks in the context of privatization
Palavras-chave:
multiplex networks, air transportation, network topology, airport privatizationResumo
Multiplex networks are a particular set among multilayer systems, which is represented by multiple
layers and each layer consists of a network with one type of interaction. Many real-world systems would be better
described as a multiplex network rather than a single-layer network. Air transportation is an example of a complex
infrastructure system and the introduction of the weight of interactions and multilayer aspect make their description
even more detailed. The concession of main Brazilian airports (a type of privatization) started in 2011, currently,
22 airports are in concession and after the sixth round this number will be doubled. The firsts contracts had
problems with huge mandatory investment not compatible with demand, therefore the current and next contracts
need to be adjusted, also considering an evaluation of the airports’ role in the network to enhance its robustness.
This paper aims to characterize structural properties using topological analysis of the Brazilian multiplex Air
Transportation Network, comparing the network of 2019 (after the fifth concession round) and 2011 network
(before the first concession started) to measure the granted airports versatility and its variation after the private
management. The multilayer approach is also compared with an aggregated approach, where airlines compose the
multiple layers. Data related to domestic and international passenger traffic of both years were collected at ANAC
database and processed using MuxViz software. The proprieties obtained are used to network characterization
including node centrality measures, multiplexity, degree and strength. Results show a network concentration
during this period, with a demand increase but half operating airlines and less available routes, increasing the
demand for larger aircraft. Results can provide an understanding of the versatility of airports, giving an insight
into the new investments to consider the airports’ network role in the next years.
