Browsing by Author "Dağ, Hasan"
Now showing items 41-52 of 52
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A preconditioner for transient stability time domain simulation
Soykan, Gürkan; Flueck, Alexander J.; Dağ, Hasan (2011)Transient Stability analysis which is one of the most important tasks of power system dynamic security analysis determines the dynamic behaviour of the power system after a large disturbance. Differential and algebraic ... -
Predicting electricity consumption using machine learning models With R and python
El Oraıby, Maryam (Kadir Has Üniversitesi, 2016)Electricity load forecasting has become an important field of interest in the last years. Antic- ipating the energy usage is vital to manage resources and avoid risk. Using machine learning techniques it is possible to ... -
Protecting openflow switches against denial of service attacks
Bahaa-Eldin, Ayman M.; ElDessouky, Ebada Mohamed Essam Eldin Ibrahim; Dağ, Hasan (Institute of Electrical and Electronics Engineers Inc., 2018)This paper presents a novel approach to protect Openflow switches against a type of Denial of Service (DoS) attacks. Openflow switches are the core of Software Defined Networks (SDN) and they are very flexible programmable ... -
Random CapsNet forest model for imbalanced malware type classification task
Çayır, Aykut; Ünal, Uğur; Dağ, Hasan (Elsevier, 2021)Behavior of malware varies depending the malware types, which affects the strategies of the system protection software. Many malware classification models, empowered by machine and/or deep learning, achieve superior ... -
Random capsule network (CAPSNET) forest model for imbalanced malware type classification task
Çayır, Aykut (Kadir Has Üniversitesi, 2021)Behavior of malware varies depending the malware types, which affect the strategies of the system protection software. Many malware classification models, empowered by machine and/or deep learning, achieve superior accuracy ... -
A Recommender Model Based on Trust Value and Time Decay Improve the Quality of Product Rating Score in E-commerce Platforms
Işık, Muhittin; Dağ, Hasan (IEEE, 2017)Most of the existing products rating score algorithms do not take fake accounts and time decay of users' ratings into account when creating the list of recommendations. The trust values and the time decay of users' ratings ... -
Sparsity Preserving Computation for Spectral Projectors
Yetkin, E. Fatih; Dağ, Hasan (Amer Inst Physics, 2011)Several areas of applications such as model order reduction preconditioner design and eigenvalue problems for spectral projectors can be found in the literature. In this paper a fast and sparsity preserving approach for ... -
A sparsity-preserving spectral preconditioner for power flow analysis
Yetkin, Emrullah Fatih; Dağ, Hasan (TUBITAK Scientific & Technical Research Council Turkey, 2016)Due to the ever-increasing demand for more detailed and accurate power system simulations the dimensions of mathematical models increase. Although the traditional direct linear equation solvers based on LU factorization ... -
A spectral divide and conquer method based preconditioner design for power flow analysis
Dağ, Hasan; Yetkin, Emrullah Fatih (2010)Power system simulations most of the time require solution of a large sparse linear system. Traditional methods such as LU decomposition based direct methods are not suitable for parallelization in general. Thus Krylov ... -
Towards Faster Branch Outage Simulations Using Simulated Annealing and Parallel Programming
Ceylan, Oğuzhan; Özdemir, Aydoğan; Dağ, Hasan (IEEE, 2009)Contingency studies such as branch outage and generator outage are among important studies of energy management centers operations. Branch outage modeling on the other hand is one of the basic steps of post-outage state ... -
Web page redesign with the user experience component of usability: The TKSD case study
Bağan, Burcu (Kadir Has Üniversitesi, 2020)User experience design changes the perspective of human-computer interaction in product design with the concept of usability. The availability of the product makes the company stand out in the market in its field and ... -
Website category classification using fine-tuned BERT language model
Demirkıran, Ferhat; Çayır, Aykut; Ünal, Uğur; Dağ, Hasan (Institute of Electrical and Electronics Engineers Inc., 2020)The contents on the Word Wide Web is expanding every second providing web users a rich content. However, this situation may cause web users harm rather than good due to its harmful or misleading information. The harmful ...