Zobrazeno 1 - 10
of 18
pro vyhledávání: '"M. Shelton Peiris"'
Autor:
M. Shelton Peiris, Manabu Asai
Publikováno v:
Econometrics, Vol 4, Iss 3, p 37 (2016)
In recent years, fractionally-differenced processes have received a great deal of attention due to their flexibility in financial applications with long-memory. This paper revisits the class of generalized fractionally-differenced processes generated
Externí odkaz:
https://doaj.org/article/849e409ea966428a9e33f5537bdf13cd
Autor:
Mahendran Shitan, M. Shelton Peiris
Publikováno v:
Communications in Statistics - Simulation and Computation. 37:560-570
This article evaluates the performance of two estimators namely, the Maximum Likelihood Estimator (MLE) and Whittle's Estimator (WE), through a simulation study for the Generalised Autoregressive (GAR) model. As expected, it is found that for the par
Autor:
William K. Bertram, M. Shelton Peiris
Publikováno v:
Computational Statistics & Data Analysis. 51:3627-3630
This paper examines a misclassification problem that can arise when modelling data which contains low frequency components. We illustrate this problem by fitting GAR(1) and AR(1) models to volume and transaction frequency data from the Australian Sto
Publikováno v:
Applied Mathematics Letters. 20:177-182
This paper considers a class of volatility models generated by autoregressive (AR) type models with indices. Some results associated with the autocorrelation function (acf) of this class are given and the spectral density is obtained in terms of the
Publikováno v:
Metrika. 54:131-138
This paper considers the class of m-variate autoregressive moving average (ARMA) processes with stable innovations and time dependent coefficients. A set of suitable AR and MA regularity conditions is given to ensure existence and uniqueness of valid
Autor:
M. Shelton Peiris
Publikováno v:
Microelectronics Reliability. 36:1375-1378
Forecasting is a very important phenomenon in many problems in real world (e.g. Engineering, Science, Economics, etc.) situations. This note addresses some problems of improving the accuracy of forecasts and show that one method is superior than the
Autor:
Roman R. Poznański, M. Shelton Peiris
Publikováno v:
Mathematical Medicine and Biology. 13:207-222
The expectation (mean) and variance of the depolarization in the absence of a threshold for action-potential generation is obtained in a neuron model represented by a tapering equivalent cable with a random (white noise) synaptic input current at a p
Autor:
N. Singh, M. Shelton Peiris
Publikováno v:
Biometrical Journal. 38:741-752
This paper derives easy-to-calculate preditors for seasonal and nonseasonal fractionally integrated autoregressive-moving average (ARIMA (p, d, q) × (P, D, Q)s) models with both differencing parameters d and D assuming values on the real line. It is
Autor:
M. Shelton Peiris
Publikováno v:
Calcutta Statistical Association Bulletin. 44:151-156
This paper considers forecasts of the sum of a particular component of two independent Gaussian vector moving average processes. The efficiency of forecasts are compared via ( a) the corresponding component models, ( b) the joint vector models and (
Autor:
M. Shelton Peiris
Publikováno v:
Communications in Statistics - Theory and Methods. 19:2847-2852
The paper considers vector ARMA processes with nonstationary innovations. It is suggested that this class of models provide a very efficient framework for nonstationary problems. A generalization of the Yule-Walker equations relating the underlying p