文章基本信息

标题：Decay Factor as a Determinant of Forecasting Models
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作者：Grzegorz Mentel ; Jacek Brozyna
期刊名称：International Journal of Economics and Finance
印刷版ISSN：1916-971X
电子版ISSN：1916-9728
出版年度：2014
卷号：7
期号：1
页码：118
DOI：10.5539/ijef.v7n1p118
语种：English
出版社：Canadian Center of Science and Education
摘要：The present discussion focuses on the significance of historical observations which affect current market situations, and consequently impact short term forecasts. The main purpose of the study is to verify the level of importance and perform ranking of information necessary for estimating Value at Risk . Hence, effectiveness of VaR estimates was assessed in the context of volatility modeling by means of exponentially weighted moving average (EWMA), relative to various levels of decay factor l.