Seminar za računarstvo i primenjenu matematiku, 19. oktobar 2021.

Naredni sastanak Seminara biće održan onlajn u utorak, 19. oktobra 2021. sa početkom u 14.15 časova.

Predavač: dr Stefan Kostić, Elektrotehnički fakultet, Univerzitet u Beogradu

Naslov predavanja: CUSTOMER CHURN PREDICTION IN MOBILE TELECOMMUNICATION NETWORKS APPLYING UNSUPERVISED MACHINE LEARNING

Apstrakt:
Due to telecommunications market saturation, it is very important for telco operators to always have fresh insights into their customer’s dynamics. In that regard, social network analytics and its application with graph theory can be very useful. In this paper we analyze a social network that is represented by a large telco network graph and perform clustering of its nodes by studying a broad set of metrics, e.g., node in/out degree, first and second order influence, eigenvector, authority and hub values. This paper demonstrates that it is possible to identify some important nodes in our social network (graph) that are vital regarding churn prediction. We show that if such a node leaves a monitored telco operator, customers that frequently interact with that specific node will be more prone to leave the monitored telco operator network as well; thus, by analyzing existing churn and previous call patterns, we proactively predict new customers that will probably churn. The churn prediction results are quantified by using top decile lift metrics. The proposed method is general enough to be readily adopted in any field where homophilic or friendship connections can be assumed as a potential churn driver.

Zbog trenutne epidemiološke situacije, predavanja se mogu pratiti isključivo na daljinu preko linka
https://miteam.mi.sanu.ac.rs/asset/YoqHWKALRkRTbK9So

Za aktivno učešće na Seminaru (diskusija, evidencija prisustva) neophodno je da se na tom linku i ulogujete (stavka "login" u gornjem desnom uglu). Ukoliko niste već registrovani to možete učiniti preko linka: https://miteam.mi.sanu.ac.rs/asset/xzGqvSp7aWbg8WpYX


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