Results 11 to 20 of about 23,794,745 (244)

Using Fuzzy-ARFIMA Models to Predict Births in Basra Governorate

open access: yesJournal of Physics: Conference Series, 2021
Today’s time series analysis is one of the most important statistical methods in forecasting, and it has been used in many economic, industrial, commercial and science fields, by representing time series characterized by long-term memory that helps ...
Raissan A. Zalan, Zainab Sami Yaseen
semanticscholar   +1 more source

The hybrid model of autoregressive integrated moving average and fuzzy time series Markov chain on long-memory data

open access: yesFrontiers in Applied Mathematics and Statistics, 2022
IntroductionThe price of crude oil as an essential commodity in the world economy shows a pattern and identifies the component factors that influence it in the short and long term.
Dodi Devianto   +4 more
doaj   +1 more source

Time Series Modeling of Guinea Fowls Production in Kenya Using the ARIMA and ARFIMA Models

open access: yes, 2021
Commercial farming of Guinea Fowls is at its infant stages and is generating a lot of interest for farmers in Kenya. This, coupled with an increased demand for poultry products in the Kenyan market in the recent past, calls for the rearing of the guinea ...
Cecilia Mbithe Titus   +2 more
semanticscholar   +1 more source

BOOTSTRAP ASSISTED SPECIFICATION TESTS FOR THE ARFIMA MODEL [PDF]

open access: yesEconometric Theory, 2011
This paper proposes bootstrap assisted specification tests for the autoregressive fractionally integrated moving average model based on the BartlettTp-process with estimated parameters whose limiting distribution under the null depends on the estimated model and the estimation method employed.
Delgado, Miguel A.   +2 more
openaire   +2 more sources

Stock-return volatility persistence over short and long range horizons: Some empirical evidences

open access: yesJurnal Perspektif Pembiayaan dan Pembangunan Daerah, 2020
In this paper, we account for memory failure or otherwise in the daily evolution of stock return and volatility within the purview of short and long ranges based on the arrival of fundamental news.
Kolawole Subair, Ajibola Arewa
doaj   +1 more source

Forecasting realised volatility using ARFIMA and HAR models [PDF]

open access: yesQuantitative Finance, 2019
Recent literature provides mixed empirical evidence with respect to the forecasting performance of ARFIMA and HAR models. This paper compares the forecasting performance of both models using high frequency data of 100 stocks representing 10 business sectors for the period 2000-2010.
Marwan Izzeldin   +3 more
openaire   +2 more sources

Modelling Short- and Long-Term Dependencies of Clustered High-Threshold Exceedances in Significant Wave Heights

open access: yesMathematics, 2021
The peaks-over-threshold (POT) method has a long tradition in modelling extremes in environmental variables. However, it has originally been introduced under the assumption of independently and identically distributed (iid) data. Since environmental data
Pushpa Dissanayake   +3 more
doaj   +1 more source

SMALL-SAMPLE LIKELIHOOD-BASED INFERENCE IN THE ARFIMA MODEL [PDF]

open access: yesEconometric Theory, 2000
The autoregressive fractionally integrated moving average (ARFIMA) model has become a popular approach for analyzing time series that exhibit long-range dependence. For the Gaussian case, there have been substantial advances in the area of likelihood-based inference, including development of the asymptotic properties of the maximum likelihood ...
Offer Lieberman   +2 more
openaire   +4 more sources

The Comparison between ARIMA and ARFIMA Model to Forecast Kijang Emas (Gold) Prices in Malaysia using MAE, RMSE and MAPE

open access: yesJournal of Computing Research and Innovation, 2021
Gold is known as the most valuable commodity in the world because it is a universal currency recognized by every single bank across the globe. Thus, many people were interested in investing gold since gold market was always steadier compared to other ...
Atiqa Nur Azza Mahmad Azan   +2 more
doaj   +1 more source

Testing for long memory in volatility in the Indian Forex market [PDF]

open access: yesEkonomski Anali, 2014
This article attempts to verify the presence of long memory in volatility in the Indian foreign exchange market using daily bilateral returns of the Indian Rupee against the US dollar from 17/02/1994 to 08/11/2013.
Kumar Anoop S.
doaj   +1 more source

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