Fuzzy regression analysis based on M-estimates

J Chachi, SM Taheri, P D'Urso - Expert Systems with Applications, 2022 - Elsevier
The least-squares technique has been shown to possess valuable properties as a method of
the parameter estimation of classic and fuzzy regression analysis. However, the behavior …

MADM approach to analyse the performance of fuzzy regression models

A Kazemifard, J Chachi - Journal of Ambient Intelligence and Humanized …, 2022 - Springer
It is worth to note that estimated parameters of any fuzzy regression model as well as its
goodness-of-fit value depend on the objective function being optimized. Thus, it is not easy …

An Exponential Autoregressive Time Series Model for Complex Data

G Hesamian, F Torkian, A Johannssen, N Chukhrova - Mathematics, 2023 - mdpi.com
In this paper, an exponential autoregressive model for complex time series data is
presented. As for estimating the parameters of this nonlinear model, a three-step procedure …

Support vector machine classification using semi-parametric model

MG Akbari, S Khorashadizadeh, MH Majidi - Soft Computing, 2022 - Springer
Pattern recognition and data mining using support vector machine (SVM) have been the
focus of widespread researches in recent decades. In SVM, a hyper-plane is designed to …

A fuzzy linear regression model with autoregressive fuzzy errors based on exact predictors and fuzzy responses

MG Akbari, G Hesamian - Computational and Applied Mathematics, 2022 - Springer
This paper is an attempt to develop a novel linear regression model with autocorrelated
fuzzy error terms and exact predictors and fuzzy responses. The conventional Durbin …

Fuzzy robust regression based on exponential-type kernel functions

L Kong, C Song - Journal of Computational and Applied Mathematics, 2025 - Elsevier
The least squares method is a frequently used technique in fuzzy regression analysis.
However, it is highly sensitive to outliers in the dataset. To address this challenge, we …

Fuzzy time series model using weighted least square estimation

G Hesamian, MG Akbari - Iranian Journal of Fuzzy Systems, 2022 - ijfs.usb.ac.ir
The conventional fuzzy least-squares time series models show undesirable performance
when the fuzzy data set involves the outliers. By introducing a strategy to detect the outliers …

A Three-Stage Nonparametric Kernel-Based Time Series Model Based on Fuzzy Data

G Hesamian, A Johannssen, N Chukhrova - Mathematics, 2023 - mdpi.com
In this paper, a nonlinear time series model is developed for the case when the underlying
time series data are reported by LR fuzzy numbers. To this end, we present a three-stage …

A non-parametric model for fuzzy forecasting time series data

G Hesamian, MG Akbari - Computational and Applied Mathematics, 2021 - Springer
The time series analysis is mainly aimed at establishing a fuzzy prediction model based on a
set of real-valued time series data. To achieve this goal, the present paper proposes a …

A fuzzy non-parametric time series model based on fuzzy data

G Hesamian, F Torkian… - Iranian Journal of Fuzzy …, 2022 - ijfs.usb.ac.ir
Parametric time series models typically consists of model identification, parameter
estimation, model diagnostic checking, and forecasting. However compared with parametric …