Nihat Tak

ORCID: 0000-0001-8796-5101
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About
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Research Areas
  • Fuzzy Logic and Control Systems
  • Stock Market Forecasting Methods
  • Fuzzy Systems and Optimization
  • Forecasting Techniques and Applications
  • Energy Load and Power Forecasting
  • Global Financial Crisis and Policies
  • Traditional Chinese Medicine Studies
  • Neural Networks and Applications
  • Monetary Policy and Economic Impact
  • Banking stability, regulation, efficiency
  • Islamic Finance and Banking Studies
  • Machine Learning in Bioinformatics
  • Air Quality Monitoring and Forecasting
  • Multi-Criteria Decision Making
  • Ottoman Empire History and Society
  • Fractal and DNA sequence analysis
  • Hydrological Forecasting Using AI
  • COVID-19 epidemiological studies

Marmara University
2024

Bursa Technical University
2023

Kırklareli University
2017-2022

10.1016/j.asoc.2018.08.009 article EN Applied Soft Computing 2018-08-14

10.1016/j.eswa.2019.112913 article EN Expert Systems with Applications 2019-09-02

10.1016/j.eswa.2022.116916 article EN Expert Systems with Applications 2022-03-21

10.1016/j.cam.2019.112653 article EN publisher-specific-oa Journal of Computational and Applied Mathematics 2019-12-09

10.1016/j.ins.2021.01.024 article EN Information Sciences 2021-02-01

The aim of this study is to evaluate the utility an artificial neural network (ANN) model in diagnosing idiopathic generalized epilepsy (IGE) and compare results diagnostic constructed by combining expression levels miR‐146a, miR‐155, miR‐132 genes using ANN, random forest (RF), discriminant analysis (DA). qRT‐PCR employed determine three miRNA genes. Forty‐six IGE patients 51 healthy controls were included study. Three genetic biomarkers assess discriminative power disease, they combined...

10.1155/2024/8853018 article EN cc-by Acta Neurologica Scandinavica 2024-01-01

Feed-forward neural networks have been frequently used in forecasting problems, recently. In this study, we propose a naive method to improve the ability of feed-forward with single hidden layer by adapting meta fuzzy functions. Because are very sensitive initial random weights, usually some numbers repeats processed different weights. The forecasts for are, then, averaged equal weights obtain more reliable results. However, if can assign correct initials appropriate produce competitive...

10.1080/00949655.2021.1909024 article EN Journal of Statistical Computation and Simulation 2021-04-04

Abstract In order to analyse the currency crises in Turkey over period of January 1990 and October 2019, we first dated with meta‐possibilistic fuzzy index functions. Then, determined significant predictors or leading indicators crisis logistic regression. Finally, tried measure compare in‐sample out‐of‐sample performances our method an generated by principal component analysis (PCA). We found that models using have higher than PCA. concluded change real exchange rate, bank loans deposits,...

10.1002/ijfe.2350 article EN International Journal of Finance & Economics 2020-12-07

Meta-analysis was introduced to aggregate the findings of different primary studies in statistical aspects. However, proposed study, term "meta" is used models for a specific topic with help fuzzy c-means clustering method. One motivations method based on concept indices. In literature, there are numerous indices under conditions purpose. Our assumption that each index has some information given dataset. Therefore, meta functions, which include function certain degree membership value,...

10.31801/cfsuasmas.501675 article EN Communications Faculty Of Science University of Ankara Series A1Mathematics and Statistics 2020-01-28

Intuitionistic meta fuzzy forecast combination functions are introduced in the paper. There two challenges literature, determining optimum weights and methods to combine. Although there a few studies on methods, numerous of forecasting methods. In this sense, questions like “What should we choose combination?” function or for methods” handled proposed method. Thus, first contributions that paper aims propose obtain proper by employing (MFFs). MFFs recently aggregating different specific...

10.3233/jifs-202021 article EN Journal of Intelligent & Fuzzy Systems 2021-03-02

Time series models are used extensively in many fields, such as medicine, engineering, business, economics, and finance, with the aim of making forecasts through help observation values from previous periods.Therefore, there efforts to improve time forecasting performances recent literature, mainly using alternative/non-probabilistic methods.In present study, a novel approach has been proposed by combining type-1 fuzzy functions (T1FF) Autoregressive moving average (ARMA) model based on grey...

10.14783/maruoneri.771818 article EN Öneri Dergisi 2020-07-20
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