Items where Author is "Yolcu, Ufuk"

Egrioglu, Erol and Bas, Eren and Yolcu, Ufuk (2021) Intuitionistic Fuzzy Time Series Functions Approach for Time Series Forecasting. Granular Computing, 6 (3). pp. 619-629. ISSN 2364-4974

Yolcu, Ufuk and Egrioglu, Erol and Bas, Eren and Yolcu, Ozge Cagcag and Dalar, Ali Zafer (2021) Probabilistic forecasting, linearity and nonlinearity hypothesis tests with bootstrapped linear and nonlinear artificial neural network. Journal of Experimental and Theoretical Artificial Intelligence, 33 (3). pp. 383-404. ISSN 0952-813X

Tak, Nihat and Egrioglu, Erol and Bas, Eren and Yolcu, Ufuk (2021) An adaptive forecast combination approach based on meta intuitionistic fuzzy functions. Journal of Intelligent and Fuzzy Systems, 40 (5): 5. pp. 9567-9581. ISSN 1064-1246

Bas, Eren and Yolcu, Ufuk and Egrioglu, Erol (2020) Picture fuzzy regression functions approach for financial time series based on ridge regression and genetic algorithm. Journal of Computational and Applied Mathematics, 370: 112656. ISSN 0377-0427

Egrioglu, Erol and Bas, Eren and Yolcu, Ufuk and Chen, Mu Yen (2020) Picture fuzzy time series : Defining, modeling and creating a new forecasting method. Engineering Applications of Artificial Intelligence, 88: 103367. ISSN 0952-1976

Cagcag Yolcu, Ozge and Bas, Eren and Egrioglu, Erol and Yolcu, Ufuk (2019) A new intuitionistic fuzzy functions approach based on hesitation margin for time-series prediction. Soft Computing. ISSN 1432-7643

Egrioglu, Erol and Bas, Eren and Yolcu, Ozge Cagcag and Yolcu, Ufuk (2019) Intuitionistic time series fuzzy inference system. Engineering Applications of Artificial Intelligence, 82. pp. 175-183. ISSN 0952-1976

Egrioglu, Erol and Yolcu, Ufuk and Bas, Eren and Dalar, Ali Zafer (2019) Median-Pi artificial neural network for forecasting. Neural Computing and Applications, 31 (1). pp. 307-316. ISSN 0941-0643

Yolcu, Ufuk and Bas, Eren and Egrioglu, Erol (2018) A new fuzzy inference system for time series forecasting and obtaining the probabilistic forecasts via subsampling block bootstrap. Journal of Intelligent and Fuzzy Systems, 35 (2). pp. 2349-2358. ISSN 1064-1246

Bas, Eren and Grosan, Crina and Egrioglu, Erol and Yolcu, Ufuk (2018) High order fuzzy time series method based on pi-sigma neural network. Engineering Applications of Artificial Intelligence, 72. pp. 350-356. ISSN 0952-1976

Cagcag Yolcu, Ozge and Bas, Eren and Egrioglu, Erol and Yolcu, Ufuk (2018) Single Multiplicative Neuron Model Artificial Neural Network with Autoregressive Coefficient for Time Series Modelling. Neural Processing Letters, 47 (3). pp. 1133-1147. ISSN 1370-4621

Akdeniz, Esra and Egrioglu, Erol and Bas, Eren and Yolcu, Ufuk (2018) An ARMA Type Pi-Sigma Artificial Neural Network for Nonlinear Time Series Forecasting. Journal of Artificial Intelligence and Soft Computing Research, 8 (2). pp. 121-132. ISSN 2449-6499

Yolcu, Ufuk and Jin, Yaochu and Egrioglu, Erol (2017) An ensemble of single multiplicative neuron models for probabilistic prediction. In: 2016 IEEE Symposium Series on Computational Intelligence, SSCI 2016 :. 2016 IEEE Symposium Series on Computational Intelligence, SSCI 2016 . Institute of Electrical and Electronics Engineers Inc., GRC. ISBN 9781509042401

Cagcag Yolcu, Ozge and Yolcu, Ufuk and Egrioglu, Erol and Aladag, C. Hakan (2016) High order fuzzy time series forecasting method based on an intersection operation. Applied Mathematical Modelling, 40 (19-20). pp. 8750-8765. ISSN 0307-904X

Gundogdu, Ozge and Egrioglu, Erol and Aladag, Cagdas Hakan and Yolcu, Ufuk (2016) Multiplicative neuron model artificial neural network based on Gaussian activation function. Neural Computing and Applications, 27 (4). pp. 927-935. ISSN 0941-0643

Aladag, Cagdas Hakan and Yolcu, Ufuk and Egrioglu, Erol and Turksen, I. Burhan (2016) Type-1 fuzzy time series function method based on binary particle swarm optimisation. International Journal of Data Analysis Techniques and Strategies, 8 (1). pp. 2-13. ISSN 1755-8050

Bas, Eren and Egrioglu, Erol and Aladag, Cagdas Hakan and Yolcu, Ufuk (2015) Fuzzy-time-series network used to forecast linear and nonlinear time series. Applied Intelligence, 43 (2). pp. 343-355. ISSN 0924-669X

Egrioglu, Erol and Yolcu, Ufuk and Aladag, Cagdas Hakan and Bas, Eren (2015) Recurrent Multiplicative Neuron Model Artificial Neural Network for Non-linear Time Series Forecasting. Neural Processing Letters, 41 (2). pp. 249-258. ISSN 1370-4621

Cagcag, Ozge and Yolcu, Ufuk and Egrioglu, Erol (2015) A new robust regression method based on particle swarm optimization. Communications in Statistics - Theory and Methods, 44 (6). pp. 1270-1280. ISSN 0361-0926

Egrioglu, Erol and Khashei, Mehdi and Aladag, Cagdas Hakan and Turksen, I. Burhan and Yolcu, Ufuk (2015) Advanced Time Series Forecasting Methods. Mathematical Problems in Engineering, 2015: 918045. ISSN 1024-123X

Yolcu, Ufuk and Bas, Eren and Egrioglu, Erol and Aladag, Cagdas Hakan (2015) A new multilayer feedforward network based on trimmed mean neuron model. Neural Network World, 25 (6). pp. 587-602. ISSN 1210-0552

Bas, Eren and Uslu, Vedide Rezan and Yolcu, Ufuk and Egrioglu, Erol (2014) A modified genetic algorithm for forecasting fuzzy time series. Applied Intelligence, 41 (2). pp. 453-463. ISSN 0924-669X

Rezan Uslu, Vedide and Bas, Eren and Yolcu, Ufuk and Egrioglu, Erol (2014) A fuzzy time series approach based on weights determined by the number of recurrences of fuzzy relations. Swarm and Evolutionary Computation, 15. pp. 19-26. ISSN 2210-6502

Aladag, Cagdas Hakan and Egrioglu, Erol and Yolcu, Ufuk (2014) Robust multilayer neural network based on median neuron model. Neural Computing and Applications, 24 (3-4). pp. 945-956. ISSN 0941-0643

Aladag, Cagdas Hakan and Yolcu, Ufuk and Egrioglu, Erol and Bas, Eren (2014) Fuzzy lagged variable selection in fuzzy time series with genetic algorithms. Applied Soft Computing Journal, 22. pp. 465-473. ISSN 1568-4946

Yolcu, Ufuk and Cagcag, Ozge and Aladag, Cagdas Hakan and Egrioglu, Erol (2014) An enhanced fuzzy time series forecasting method based on artificial bee colony. Journal of Intelligent and Fuzzy Systems, 26 (6). pp. 2627-2637. ISSN 1064-1246

Egrioglu, Erol and Yolcu, Ufuk and Aladag, Cagdas Hakan and Kocak, Cem (2013) An ARMA type fuzzy time series forecasting method based on particle swarm optimization. Mathematical Problems in Engineering, 2013: 935815. ISSN 1024-123X

Aladag, Cagdas Hakan and Yolcu, Ufuk and Egrioglu, Erol (2013) A new multiplicative seasonal neural network model based on particle swarm optimization. Neural Processing Letters, 37 (3). pp. 251-262. ISSN 1370-4621

Yolcu, Ufuk and Aladag, Cagdas Hakan and Egrioglu, Erol and Uslu, Vedide R. (2013) Time-series forecasting with a novel fuzzy time-series approach : An example for Istanbul stock market. Journal of Statistical Computation and Simulation, 83 (4). pp. 597-610. ISSN 0094-9655

Egrioglu, Erol and Aladag, Cagdas Hakan and Yolcu, Ufuk (2013) Fuzzy time series forecasting with a novel hybrid approach combining fuzzy c-means and neural networks. Expert Systems with Applications, 40 (3). pp. 854-857. ISSN 0957-4174

Yolcu, Ufuk and Egrioglu, Erol and Aladag, Cagdas H. (2013) A new linear & nonlinear artificial neural network model for time series forecasting. Decision Support Systems, 54 (3). pp. 1340-1347. ISSN 0167-9236

Aladag, Cagdas Hakan and Egrioglu, Erol and Yolcu, Ufuk (2012) A simulation based approach to calculate the fuzzy correlation coefficient of fuzzy observations. Hacettepe Journal of Mathematics and Statistics, 41 (3). pp. 361-364. ISSN 1303-5010

Aladag, Cagdas Hakan and Yolcu, Ufuk and Egrioglu, Erol and Dalar, Ali Z. (2012) A new time invariant fuzzy time series forecasting method based on particle swarm optimization. Applied Soft Computing Journal, 12 (10). pp. 3291-3299. ISSN 1568-4946

Alp Erilli, N. and Yolcu, Ufuk and Eǧrioǧlu, Erol and Hakan Aladaǧ, Ĉ and Öner, Yüksel (2011) Determining the most proper number of cluster in fuzzy clustering by using artificial neural networks. Expert Systems with Applications, 38 (3). pp. 2248-2252. ISSN 0957-4174

Egrioglu, Erol and Aladag, Cagdas Hakan and Basaran, Murat A. and Yolcu, Ufuk and Uslu, Vedide R. (2011) A new approach based on the optimization of the length of intervals in fuzzy time series. Journal of Intelligent and Fuzzy Systems, 22 (1). pp. 15-19. ISSN 1064-1246

Aladag, Cagdas Hakan and Egrioglu, Erol and Yolcu, Ufuk (2010) Forecast combination by using artificial neural networks. Neural Processing Letters, 32 (3). pp. 269-276. ISSN 1370-4621

Aladag, Cagdas Hakan and Yolcu, Ufuk and Egrioglu, Erol (2010) A high order fuzzy time series forecasting model based on adaptive expectation and artificial neural networks. Mathematics and Computers in Simulation, 81 (4). pp. 875-882. ISSN 0378-4754

Egrioglu, Erol and Aladag, Cagdas Hakan and Yolcu, Ufuk and Uslu, Vedide R. and Basaran, Murat A. (2010) Finding an optimal interval length in high order fuzzy time series. Expert Systems with Applications, 37 (7). pp. 5052-5055. ISSN 0957-4174

Egrioglu, Erol and Aladag, Cagdas Hakan and Yolcu, Ufuk and Uslu, Vedide R. and Basaran, Murat A. (2009) A new approach based on artificial neural networks for high order multivariate fuzzy time series. Expert Systems with Applications, 36 (7). pp. 10589-10594. ISSN 0957-4174

Egrioglu, Erol and Aladag, Cagdas Hakan and Yolcu, Ufuk and Basaran, Murat A. and Uslu, Vedide R. (2009) A new hybrid approach based on SARIMA and partial high order bivariate fuzzy time series forecasting model. Expert Systems with Applications, 36 (4). pp. 7424-7434. ISSN 0957-4174

Yolcu, Ufuk and Egrioglu, Erol and Uslu, Vedide R. and Basaran, Murat A. and Aladag, Cagdas H. (2009) A new approach for determining the length of intervals for fuzzy time series. Applied Soft Computing Journal, 9 (2). pp. 647-651. ISSN 1568-4946

Aladag, Cagdas H. and Basaran, Murat A. and Egrioglu, Erol and Yolcu, Ufuk and Uslu, Vedide R. (2009) Forecasting in high order fuzzy times series by using neural networks to define fuzzy relations. Expert Systems with Applications, 36 (3 PART). pp. 4228-4231. ISSN 0957-4174

Egrioglu, Erol and Uslu, V. Rezan and Yolcu, Ufuk and Basaran, M. A. and Hakan, Aladag C. (2009) A new approach based on artificial neural networks for high order bivariate fuzzy time series. In: Applications of Soft Computing : From Theory to Praxis. Advances in Intelligent and Soft Computing . Springer-Verlag, pp. 265-273. ISBN 9783540896180