Results 21 to 30 of about 2,588 (267)

Exploring the importance of controlling heteroskedasticity and heterogeneity in health valuation: a case study on Dutch EQ-5D-5L

open access: yesHealth and Quality of Life Outcomes, 2022
Background Respondents in a health valuation study may have different sources of error (i.e., heteroskedasticity), tastes (differences in the relative effects of each attribute level), and scales (differences in the absolute effects of all attributes ...
Suzana Karim   +2 more
doaj   +1 more source

Dependent Metaverse Risk Forecasts with Heteroskedastic Models and Ensemble Learning

open access: yesRisks, 2023
Metaverses have been evolving following the popularity of blockchain technology. They build their own cryptocurrencies for transactions inside their platforms.
Khreshna Syuhada   +2 more
doaj   +1 more source

Spatial Autoregressive Conditional Heteroskedasticity Models

open access: yesJOURNAL OF THE JAPAN STATISTICAL SOCIETY, 2017
Summary: This study proposes a spatial extension of time series autoregressive conditional heteroskedasticity (ARCH) models to those for areal data. We call the spatially extended ARCH models as spatial ARCH (S-ARCH) models. S-ARCH models specify conditional variances given surrounding observations, which constitutes a good contrast with time series ...
Sato, Takaki, Matsuda, Yasumasa
openaire   +2 more sources

Dynamic Volatility Modeling of Indonesian Insurance Company Stocks

open access: yesJurnal Ekonomi dan Studi Pembangunan, 2022
The Indonesian capital market is one of the investment destination countries for investors in developed countries. The development of economic conditions in Indonesia itself is considered suitable for investors to invest.
Budiandru Budiandru
doaj   +1 more source

Conditional Heteroskedasticity in Crypto-Asset Returns [PDF]

open access: yesSSRN Electronic Journal, 2017
This paper examines the time series properties of cryptocurrency assets, such as Bitcoin, using established econometric inference techniques, namely models of the GARCH family. The contribution of this study is twofold. I explore the time series properties of cryptocurrencies, a new type of financial asset on which there appears to be little or no ...
openaire   +2 more sources

Exploring the Dynamic Links between GCC Sukuk and Commodity Market Volatility

open access: yesInternational Journal of Financial Studies, 2018
This study investigates the impact of commodity price volatility (including soft commodities, precious metals, industrial metals, and energy) on the dynamics of corporate sukuk returns.
Nader Naifar
doaj   +1 more source

Forecasting gains by using extreme value theory with realised GARCH filter

open access: yesIIMB Management Review, 2021
Early empirical evidence suggests that the realised generalised autoregressive conditional heteroskedasticity (GARCH) model provides significant forecasting gains over the standard GARCH models in volatility forecasting.
Samit Paul, Prateek Sharma
doaj   +1 more source

Examination of Weekend Effect and Caparison of Individual and Legal Investor's Behavior During 1381-85 in Tehran Stock Exchange [PDF]

open access: yesتحقیقات مالی, 2010
In this article using Autoregressive (AR), Autoregressive conditional heteroskedasticity (ARCH), Generalized autoregressive conditional heteroskedasticity (GARCH) Models we assess the weekend effect and also compare the trading patterns of individual and
Gholam Reza Eslami Bidgoli   +1 more
doaj  

ARCHModels.jl: Estimating ARCH Models in Julia

open access: yesJournal of Statistical Software, 2023
This paper introduces ARCHModels.jl, a package for the Julia programming language that implements a number of univariate and multivariate autoregressive conditional heteroskedasticity models.
Simon A. Broda, Marc S. Paolella
doaj   +1 more source

Mixed Normal Conditional Heteroskedasticity [PDF]

open access: yesJournal of Financial Econometrics, 2004
Both unconditional mixed-normal distributions and GARCH models with fat-tailed conditional distributions have been employed for modeling financial return data. We consider a mixed -normal distribution coupled with a GARCH -type structure which allows for conditional variance in each of the components as well as dynamic feedback between the components ...
openaire   +1 more source

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