Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Kim Hung Pho"'
Publikováno v:
Alexandria Engineering Journal, Vol 59, Iss 5, Pp 3545-3550 (2020)
In this work, a new approach to compare the spectral densities of several uncorrelated almost cyclostationary processes is proposed. The asymptotic distribution of the discrete Fourier transform is used to establish a powerful test statistic. The beh
Externí odkaz:
https://doaj.org/article/2489859c50734da7938a5769c2425276
Publikováno v:
Alexandria Engineering Journal, Vol 59, Iss 4, Pp 2555-2565 (2020)
In time series analysis, comparing spectral densities of several processes with almost periodic spectra is an interested problem. The contribution of this work is to give a technique to compare and to cluster the spectral densities of some independen
Externí odkaz:
https://doaj.org/article/193b2820f75448fb9316568aa7ebb923
Publikováno v:
Alexandria Engineering Journal, Vol 59, Iss 4, Pp 2339-2346 (2020)
This paper is devoted to establish a computational approach to investigate that a discrete-time almost cyclostationary model is a suitable choice to fit on an observed dataset. The main idea is estimating the support of spectra and applying multiple
Externí odkaz:
https://doaj.org/article/715f29a8dcbb4f709de62b6526297eac
Publikováno v:
Alexandria Engineering Journal, Vol 59, Iss 4, Pp 2811-2818 (2020)
Clustering regression models fitted on the dataset is one of the most ubiquitous issues in different fields of sciences. In this research, fuzzy clustering method is used to cluster regression models with fractional Brownian motion errors that can be
Externí odkaz:
https://doaj.org/article/6f6b845e74a24e0ab3422684a702b0a0
Publikováno v:
Journal of Advanced Engineering and Computation, Vol 3, Iss 1, Pp 293-303 (2019)
When doing research on scientific issues, it is very significant if our research issues are closely connected to real applications. In reality, when analyzing data in practice, there are frequently several models that can appropriate to the survey da
Externí odkaz:
https://doaj.org/article/633a4564325d43d2bffd01e07ea7cb80
Autor:
Kim-Hung Pho, Buu-Chau Truong
Publikováno v:
Communications in Statistics - Simulation and Computation. :1-16
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f855299dd403726d7f5e70d789ac7591
https://doi.org/10.1080/03610918.2023.2202369
https://doi.org/10.1080/03610918.2023.2202369
Publikováno v:
Complexity, Vol 2020 (2020)
Conventional optimization methods are not efficient enough to solve many of the naturally complicated optimization problems. Thus, inspired by nature, metaheuristic algorithms can be utilized as a new kind of problem solvers in solution to these type
Externí odkaz:
https://doaj.org/article/42e1204ea81d4991b980334c6eec8e99
Autor:
Kim-Hung Pho, Vu-Thanh Nguyen
Publikováno v:
Journal of Advanced Engineering and Computation, Vol 2, Iss 4, Pp 281-292 (2018)
Our main objective is in antagonizing the performance of two approaches: the Newton-Raphson (N-R) algorithm and maxLik function in the statistical software R to obtain optimization roots of estimating functions. We present the approach of algorithms,
Externí odkaz:
https://doaj.org/article/f3932b734cbc415d8bda8fb2869f8f66
Publikováno v:
Symmetry, Vol 12, Iss 6, p 929 (2020)
In this paper, a Bayesian analysis of finite mixture autoregressive (MAR) models based on the assumption of scale mixtures of skew-normal (SMSN) innovations (called SMSN–MAR) is considered. This model is not simultaneously sensitive to outliers, as
Externí odkaz:
https://doaj.org/article/20690eab53a74cf8bfb4911239a593f9
Publikováno v:
Symmetry, Vol 12, Iss 2, p 296 (2020)
This paper studies a simple skewness measure to detect symmetry and asymmetry in samples. The statistic can be obviously applied with only three short central tendencies; i.e., the first and ninth deciles, and the median. The strength of the statisti
Externí odkaz:
https://doaj.org/article/d2ad3203d1c248bcad360c596fb9d5d0