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Kripto Para Birimi Piyasalarında GPH Yöntemi ile Uzun Hafıza Analizi: Bitcoin Örneği
Ekonomi, Politika & Finans Araştırmaları DergisiSon yıllarda, para piyasalarında ve bankacılık sektöründe yaşanan krizlerin etkisiyle merkezi para otoritelerine olan güven sarsılmış ve bu nedenle merkezi olmayan bir sistem arayışına girilmiştir.
İpek Yurttagüler
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Lecturas de Economía, 2011 Sesgos en estimación, tamaño y potencia de una prueba sobre el parámetro de memoria larga en modelos ARFIMA Resumen: Castaño et al. (2008) proponen una prueba para investigar la existencia de memoria larga, basada en el parámetro de diferenciación ...
Elkin Castaño Vélez +2 more
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Does the ARFIMA really shift? [PDF]
, 2017 Short memory models contaminated by level shifts have long-memory features similar to those associated to processes generated under fractional integration. In this paper, we propose a robust testing procedure, based on an encompassing parametric specification, that allows to disentangle the level shift term from the ARFIMA component.
Monache, Davide Delle +2 more
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On the invertibility in periodic ARFIMA models
, 2020 The present paper, characterizes the invertibility and causality conditions of a periodic ARFIMA (PARFIMA) models. We first, discuss the conditions in the multivariate case, by considering the corresponding p-variate stationary ARFIMA models. Second, we construct the conditions using the univariate case and we deduce a new infinite autoregressive ...
Amimour, Amine, Belaide, Karima
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Revista de Economia e Sociologia Rural, 2007 O presente trabalho tem como objetivo modelar séries temporais para efeito de previsão com diferenciações inteira e fracionária, utilizando dados de preços futuros de commodities agrícolas.
Ricardo Chaves Lima +2 more
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Estimation of parameters in ARFIMA processes
, 2020 It is known that, in the presence of short memory components, the estimation of the fractional parameter d in an Autoregressive Fractionally Integrated Moving Average, ARFIMA(p, d, q), process leads to some difficulties (Smith et al. (1997)). In this paper, we continue the efforts made by Smith et al. (1997) by conducting a simulation study to evaluate
Lopes, Silvia Regina Costa +2 more
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Error and Model Misspecification in ARFIMA Process
Brazilian Review of Econometrics, 2001 In developing the long and short memory estimation, it is usually assumed that the innovations in the ARFIMA model are normally distributed. However, circumstances may occur where this assumption is not true. This paper uses Monte Carlo simulation to evaluate the robustness of different estimators of the fractional parameter in stationary and ...
Valderio A. Reisen +2 more
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Minimum distance estimation of stationary and non-stationary ARFIMA processes [PDF]
A new parametric minimum distance time-domain estimator for ARFIMA processes is introduced in this paper. The proposed estimator minimizes the sum of squared correlations of residuals obtained after filtering a series through ARFIMA parameters.
Laura Mayoral
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Vietnam Journal of Science, Technology and EngineeringThis study establishes the efficiency of the maintenance workforce in a process plant, utilising combined models, including artificial neural networks (ANN)-weighted aggregated sum product assessment (WASPAS) and ANN-fuzzy inference system (FIS)-WASPAS.
Sunday Ayoola Oke +1 more
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İŞSİZLİKTE UZUN HAFIZA ETKİSİ VE HİSTERİSİZ HİPOTEZİNİN GEÇERLİLİĞİ
Cumhuriyet Üniversitesi İktisadi ve İdari Bilimler Dergisi, 2019 Ekonomilerin temel iktisadigöstergelerinden biri olan işsizlik gerek teorik gerekse ampirik literatüraçısından makro iktisadın güncel konuları arasında yer almaktadır.
İpek Yurttagüler, Sinem Kutlu
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