Browsing by Author "Ogrenci,A.S."

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Citation Count: 3
Beacons for Indoor Positioning
(Institute of Electrical and Electronics Engineers Inc., 2017) Cay,E.; Mert,Y.; Bahcetepe,A.; Akyazi,B.K.; Ogrenci,A.S.
This work aims to develop a system for the tracking and control of elderly or handicapped people in an indoor environment. We have developed both a special box using an Arduino board, and a mobile application on Android to determine the location of the target based on the Bluetooth Low Energy signals transmitted by special Beacons which are placed in the area of interest. Both systems are used to determine the position of the person and to monitor any event that would cause an alert. Those events can be a long stay in a fixed position, or the entry into predefined forbidden zones. The location data will be stored in a database for further processing. Alerts can trigger messages to be sent to local authorities and/or relatives of the people. Measurements and test results are discussed regarding their performance. It is clear that more research and development is necessary for obtaining reliable products. © 2017 IEEE.
Citation Count: 0
Using Hybrid Approaches for Credit Application Scoring
(Institute of Electrical and Electronics Engineers Inc., 2023) Mirza,F.K.; Ogrenci,A.S.
Using various methods of computational intelligence, scores for credit applications are predicted for making a decision to accept or to reject. Past data about credits accepted in a financial institution are used to develop hybrid models implementing gradient boosting and attention supported neural networks. The performance (Gini scores above 0.7), limitations and further research directions are discussed. © 2023 IEEE.