Семинар за рачунарство и примењену математику, 19. октобар 2021.

• 15. Октобар, 2021
• Коментари (0)

Наредни састанак Семинара биће одржан онлајн у уторак, 19. октобра 2021. са почетком у 14.15 часова.

Предавач: др Стефан Костић, Електротехнички факултет, Универзитет у Београду

Наслов предавања: CUSTOMER CHURN PREDICTION IN MOBILE TELECOMMUNICATION NETWORKS APPLYING UNSUPERVISED MACHINE LEARNING

Апстракт:
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 грапх 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.

Због тренутне епидемиолошке ситуације, предавања се могу пратити искључиво на даљину преко линка
https://miteam.mi.sanu.ac.rs/asset/YoqHWKALRkRTbK9So

За активно учешће на Семинару (дискусија, евиденција присуства) неопходно је да се на том линку и улогујете (ставка "логин" у горњем десном углу). Уколико нисте већ регистровани то можете учинити преко линка: https://miteam.mi.sanu.ac.rs/asset/xzGqvSp7aWbg8WpYX