Browsing by Author "Albey, Erinç"
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An applicable approach to automate customer complaints
Customer complaint management is critical and time-consuming process for institutions. For an effective management and increased customer satisfaction, developing an instant and automated reply mechanism is essential. This ... -
An application for a particleboard plant: Web-based decision support system for quality prediction and digital transformation
As it is same for most of the production procedures, a certain quality level must be derived in the particle board production. In the particleboard production, a series of samples taken from the production line for the ... -
An application of digital transformation : predictive maintenance scheduling
Demirel, Kenan Cem (2021-01-18)Current technological developments in the industry and literature with the fourth revolution of industry make it possible to collect accurate data from production processes and develop data-based models to increase production ... -
Avoiding short shot quality failure in injection molding machine
The Plastic injection molding machine (IMM) has been one of the most preferred manufacturing methods since its invention and continues its development in parallel with the advancing technology. The demand for faster, better ... -
A CART-based genetic algorithm for constructing higher accuracy decision trees
Ersoy, Elif; Albey, Erinç; Kayış, Enis (SciTePress, 2020)Decision trees are among the most popular classification methods due to ease of implementation and simple interpretation. In traditional methods like CART (classification and regression tree), ID4, C4.5; trees are constructed ... -
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 ... -
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 ... -
Çevik yöntemlerde cosmic i̇şlev puanı ve hikaye puanının birlikte kullanımı
Ertaban, C.; Gezgin, S.; Bağrıyanık, S.; Albey, Erinç; Karahoca, A. (CEUR-WS, 2017)Hikaye Puanı (SP: Story Point), Scrum ve Kanban gibi çevik yöntemlerde kullanılan en yaygın metriklerden birisidir. Subjektif bir metrik olsa da kullanışlı ve basit olması nedeniyle çevik ekiplerin birikim listelerinde ... -
A data-driven matching algorithm for ride pooling problem
Şahin, Ahmet; Sevim, İ.; Albey, Erinç; Güler, M. G. (Elsevier, 2022-04)This paper proposes a data-driven matching algorithm for the problem of ride pooling, which is a transportation mode enabling people to share a vehicle for a trip. The problem is considered as a variant of matching problem, ... -
Decomposing time series data via mixed integer programming
Gözüyılmaz, Şeyma (2020-01-13)Decomposing time series into seasonality, trend, and remainder reveals underlying insights to be used in forecasting and anomaly detection. Although there are several decomposition methods, no method guarantees all of the ... -
A decomposition based metaheuristic approach for solving rapid needs assessment routing problem
Mıhçıoğlu, Yurtsev; Albey, Erinç (Elsevier, 2021-09)This paper proposes a decomposition based tabu search algorithm for solving multi-cover routing problem in the case of rapid need assessment. Rapid needs assessment aims to evaluate impact of a disaster at different sites ... -
A decomposition-based metaheuristic approach for solving the rapid needs assessment routing problem
Mıhçıoğlu, Yurtsev (2021-01-18)This study proposes a decomposition-based tabu search algorithm for a multi-cover routing problem (MCRP), which aims to classify and evaluate the impacts of the disaster in different sites and the needs of different community ... -
Deep reinforcement learning approach for trading automation in the stock market
Deep Reinforcement Learning (DRL) algorithms can scale to previously intractable problems. The automation of profit generation in the stock market is possible using DRL, by combining the financial assets price "prediction" ... -
Economic lot sizing problem with inventory dependent demand
Önal, Mehmet; Albey, Erinç (Springer Nature, 2020-11)We consider an economic lot sizing problem where the demand in a period is a piecewise linear and concave function of the amount of the available inventory after production in that period. We show that the problem isNPhard ... -
Economic lot sizing problem with tank scheduling
Önal, Mehmet; van den Heuvel, W.; Dereli, Meryem Merve; Albey, Erinç (Elsevier, 2023-07-01)We introduce a multiple-item economic lot sizing problem where items are produced through the fermentation of some raw materials. Fermentation takes place in specialized tanks that have finite capacities, and duration of ... -
Effective training methods for automatic musical genre classification
Atsız, Eren; Albey, Erinç; Kayış, Enis (SciTePress, 2019)Musical genres are labels created by human and based on mutual characteristics of songs, which are also called musical features. These features are key indicators for the content of the music. Rather than predictions by ... -
Ensemble Learning based on Regressor Chains: A Case on Quality Prediction
Demirel, Kenan Cem; Şahin, Ahmet; Albey, Erinç (SciTePress, 2019)In this study we construct a prediction model, which utilizes the production process parameters acquired from a textile machine and predicts the quality characteristics of the final yarn. Several machine learning algorithms ... -
Finding the determinants of player market value in association football using FIFA video game data
Futbol, son onyıllarda dünyadaki en popüler sporlardan biri haline gelmiştir. Artan popülerliği ile birlikte futbol, büyüyen milyar dolarlık bir pazar halini almıştır. Büyük Avrupa liglerindeki üst düzey oyuncuların ... -
Heuristic approaches for assembly line balancing and competent worker assignment problem (ALWABP)
Çengil, Muhammet Fatih (2018-01)In this study, we focus on assembly line balancing and worker assignment problem, where multiple production lines are executed by a shared pool of workers with varying skills and having absenteeism issues. We developed two ... -
A hierarchical approach for solving simultaneous lot sizing and scheduling problem with secondary resources
Şafak, C. U.; Yılmaz, Görkem; Albey, Erinç (Elsevier, 2019)This study represents a decomposition heuristic approach for simultaneous lot sizing and scheduling problem for multiple product, multiple parallel machines with secondary resources. The motivation of the study comes from ...
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