دانلود مقاله ISI انگلیسی شماره 79959
ترجمه فارسی عنوان مقاله

پویایی بازار مالی

عنوان انگلیسی
Financial market dynamics
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
79959 2003 10 صفحه PDF
منبع

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

Journal : Physica A: Statistical Mechanics and its Applications, Volume 320, 15 March 2003, Pages 525–534

ترجمه کلمات کلیدی
امور مالی؛ آمار ؛ فرایندهای تصادفی
کلمات کلیدی انگلیسی
Econophysics; Finance; Nonextensive statistics; Stochastic processes89.65.Gh; 05.10.Gg; 05.20.−y; 05.40.Fb
پیش نمایش مقاله
پیش نمایش مقاله  پویایی بازار مالی

چکیده انگلیسی

A necessary precondition for modeling financial markets is a complete understanding of their statistics, including dynamics. Distributions derived from nonextensive Tsallis statistics are closely connected with dynamics described by a nonlinear Fokker–Planck equation. The combination shows promise in describing stochastic processes with power-law distributions and superdiffusive dynamics. We investigate intra-day price changes in the stock index within this framework. We find that the power-law tails of the distributions, and the index's anomalously diffusing dynamics, are very accurately described by this approach. Our results show good agreement between market data and Fokker–Planck dynamics. This approach may be applicable in any anomalously diffusing system in which the correlations in time can be accounted for by an Ito–Langevin process with a simple time-dependent diffusion coefficient.