دانلود مقاله ISI انگلیسی شماره 13343
ترجمه فارسی عنوان مقاله

کارایی بازار نفت خام و مدل سازی: دیدگاه الگوی همبستگی چندمعیاری

عنوان انگلیسی
Crude oil market efficiency and modeling: Insights from the multiscaling autocorrelation pattern
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
13343 2010 8 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Energy Economics, Volume 32, Issue 5, September 2010, Pages 993–1000

ترجمه کلمات کلیدی
نفت خام - خودهمبستگی - الگوی چندمعیاری - بازگشت به میانگین -
کلمات کلیدی انگلیسی
Crude oil, Autocorrelations, Multiscaling pattern, Mean reversion,
پیش نمایش مقاله
پیش نمایش مقاله  کارایی بازار نفت خام و مدل سازی: دیدگاه الگوی همبستگی چندمعیاری

Empirical research on market inefficiencies focuses on the detection of autocorrelations in price time series. In the case of crude oil markets, statistical support is claimed for weak efficiency over a wide range of time-scales. However, the results are still controversial since theoretical arguments point to deviations from efficiency as prices tend to revert towards an equilibrium path. This paper studies the efficiency of crude oil markets by using lagged detrended fluctuation analysis (DFA) to detect delay effects in price autocorrelations quantified in terms of a multiscaling Hurst exponent (i.e., autocorrelations are dependent of the time scale). Results based on spot price data for the period 1986–2009 indicate important deviations from efficiency associated to lagged autocorrelations, so imposing the random walk for crude oil prices has pronounced costs for forecasting. Evidences in favor of price reversion to a continuously evolving mean underscores the importance of adequately incorporating delay effects and multiscaling behavior in the modeling of crude oil price dynamics.