Characterization of the Chilean Public Procurement Ecosystem Using Social Network Analysis
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Fecha
2020
Autores
Profesor/a Guía
Facultad/escuela
Idioma
en
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Editor
Institute of Electrical and Electronics Engineers Inc.
Nombre de Curso
Licencia CC
Attribution 4.0 International (CC BY 4.0)
Licencia CC
Resumen
'Mercado Público' is a Chilean electronic platform used for purchasing processes by Chilean public organizations for the last two decades. The main aim of this study is to characterize the Chilean public procurement ecosystem by using social network analysis to detect the main communities of suppliers based on who awarded the tenders. To do this, we use a methodology that first represents the bidder-supplier relationship as a bipartite graph using purchase order information. Then we project the bipartite graph onto a monopartite graph of suppliers. We end by detecting the main supplier communities using a modularity algorithm. When we applied this methodology to the large tender segment in the Chilean public procurement market over a period of four years, we successfully detected the five largest communities and the micro and small companies which had the greatest rate of participation over time.
Notas
Indexación: Scopus.
Palabras clave
Bipartite graph, communities, modularity, public procuremen, tenders, Community Detection, Graph Clustering, Modularity
Citación
IEEE Access, Volume 8, Pages 138846 - 138858, 2020, Article number 9149588
DOI
DOI: 10.1109/ACCESS.2020.3011947