• An approach for predicting employee churn by using data mining 

  Yiğit, İ. O.; Shourabizadeh, Hamed (IEEE, 2017)

  Employee churn prediction which is closely related to customer churn prediction is a major issue of the companies. Despite the importance of the issue, there is few attention in the literature about. In this study, we ...

• Churn prediction for mobile prepaid subscribers 

  Can, Zehra; Albey, Erinç (Institute for Systems and Technologies of Information, Control and Communicatio, 2017)

  In telecommunication, mobile operators prefer to acquire postpaid subscribers and increase their incoming revenue based on the usage of postpaid lines. However, subscribers tend to buy and use prepaid mobile lines because ...

• Special issue in humanitarian operations 

  Balçık, Burcu (Elsevier, 2016-12)

• Site selection and vehicle routing for post-disaster rapid needs assessment 

  Balçık, Burcu (Elsevier, 2017-05)

  In the immediate aftermath of a disaster, relief agencies perform rapid needs assessment to investigate the effects of the disaster on the affected communities. Since assessments must be performed quickly, visiting all of ...

• Multi-dimensional clearing functions for aggregate capacity modelling in multi-stage production systems 

  Albey, Erinç; Bilge, Ü.; Uzsoy, R. (Informa, 2017)

  Nonlinear clearing functions have been proposed in the literature as metamodels to represent the behaviour of production resources that can be embedded in optimisation models for production planning. However, most clearing ...

• Evaluation of sources for the sustainability of energy supply in Turkey 

  Kuleli Pak, B.; Albayrak, Y. E.; Erensal, Y. C. (Wiley, 2017)

  Energy is one of the main factors that must be considered in the discussions of sustainable development. Renewable, clean and cost effective energy sources are preferred but unfortunately no one of the alternative energy ...

• A model to estimate cost-savings in diabetic foot ulcer prevention efforts 

  Barshes, N. R.; Saedi, S.; Wrobel, J.; Kougias, P.; Kundakçıoğlu, Ömer Erhun; Armstrong, D. G. (Elsevier, 2017)

  Background: Sustained efforts at preventing diabetic foot ulcers (DFUs) and subsequent leg amputations are sporadic in most health care systems despite the high costs associated with such complications. We sought to estimate ...

• A chance constraint based multi-item production planning model using simulation optimization 

  Albey, Erinç; Uzsoy, R.; Kempf, K. G. (IEEE, 2016)

  We consider a single stage multi-item production-inventory system under stochastic demand. We had previously proposed a production planning model integrating ideas from forecast evolution and inventory theory to plan work ...

• Solving a large-scale integrated fleet assignment and crew pairing problem 

  Özener, Okan Örsan; Örmeci Matoğlu, M.; Erdoğan, G.; Haouari, M.; Sözer, Hasan (Springer International Publishing, 2017)

  Airline schedule planning problems are typically decomposed into smaller problems, which are solved in a sequential manner, due to the complexity of the overall problems. This results in suboptimal solutions as well as ...

• Selective routing for post-disaster needs assessments 

  Balçık, Burcu (Springer International Publishing, 2016)

  In the immediate aftermath of a disaster, relief agencies perform needs assessment operations to investigate the effects of the disaster and understand the needs of the affected communities. Since assessments must be ...

• Integrating social network effects in the share-of-choice problem 

  Günneç, Dilek; Raghavan, S. (Wiley, 2017-12)

  Accounting for social network effects in marketing strategies has become an important issue. Taking a step back, we seek to incorporate and analyze social network effects on new product development and then propose a model ...

• A literature review on inventory management in humanitarian supply chains 

  Balçık, Burcu; Bozkir, C. D. C.; Kundakçıoğlu, Ömer Erhun (Elsevier, 2016)

  In this paper, we present a review and analysis of studies that focus on humanitarian inventory planning and management. Specifically, we focus on papers which develop policies and models to determine how much to stock, ...

• A mathematical model for perishable products with price- and displayed-stock-dependent demand 

  Onal, M.; Yenipazarli, A.; Kundakçıoğlu, Ömer Erhun (Elsevier, 2016-12)

  We introduce an economic order quantity model that incorporates product assortment, pricing and space-allocation decisions for a group of perishable products. The goal is to maximize the retailer’s profit under shelf-space ...

• Production planning with price-dependent supply capacity 

  Teksan, Melis; Geunes, J. (Taylor and Francis, 2016)

  We consider a production planning problem in which a producer procures an input component for production by offering a price to suppliers. The available supply quantity for the production input depends on the price the ...

• Şebeke kaynaklı müşteri şikayetleri için akıllı teşhis ve çözüm sistemleri 

  Kasapoğulları, T.; Öneş, O.; Albey, Erinç (IEEE, 2016)

  In the telecommunication sector, there exists a vast variety of protocol data (Such as ADR, IUCS, GB, IUPS, GN) produced by signaling systems. The data contains various information regarding network quality and performance. ...

• Calibrating artificial neural networks by global optimization 

  Pinter, Janos D. (Elsevier, 2012-01)

  Artificial neural networks (ANNs) are used extensively to model unknown or unspecified functional relationships between the input and output of a “black box” system. In order to apply the generic ANN concept to actual ...

• Benchmarking regression algorithms for income prediction modeling 

  Kibekbaev, A.; Duman, Ekrem (Elsevier, 2016)

  This paper aims to predict incomes of customers for banks. In this large-scale income prediction benchmarking paper, we study the performance of various state-of-the-art regression algorithms (e.g. ordinary least squares ...

• Solving the steiner tree problem with revenues, budget and hop constraints to optimality 

  Layeb, S. B.; Hajri, I.; Haouari, Mohamed (IEEE, 2013)

  We investigate the Steiner tree problem with revenues, budget and hop constraints (STPRBH) on graph, which is a generalization of the well-known Steiner tree problem. Given a root node, edge costs, nodes revenues, as well ...

• Healthcare intelligence: Turning data into knowledge 

  Yang, H.; Kundakçıoğlu, Ömer Erhun (IEEE, 2014)

  Exceptional opportunities exist for researchers and practitioners to invest in conducting innovative and transformative research in data mining and health informatics. This IEEE Intelligent Systems "Trends and Controversies" ...

• Intelligent classification-based methods in customer profitability modeling 

  Ekinci, Y.; Duman, Ekrem (Springer International Publishing, 2015)

  The expected profits from customers are important informations for the companies in giving acquisition/retention decisions and developing different strategies for different customer segments. Most of these decisions can ...

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