تست برای تعادل دقیق در یک بازار مالی
|کد مقاله||سال انتشار||مقاله انگلیسی||ترجمه فارسی||تعداد کلمات|
|42317||2015||8 صفحه PDF||سفارش دهید||3730 کلمه|
Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)
Journal : Physica A: Statistical Mechanics and its Applications, Volume 427, 1 June 2015, Pages 26–33
We test a historical price–time series in a financial market (the NASDAQ 100 index) for a statistical property known as detailed balance. The presence of detailed balance would imply that the market can be modeled by a stochastic process based on a Markov chain, thus leading to equilibrium. In economic terms, a positive outcome of the test would support the efficient market hypothesis, a cornerstone of neo-classical economic theory. In contrast to the usage in prevalent economic theory the term equilibrium here is tied to the returns, rather than the price–time series. The test is based on an action functional SS constructed from the elements of the detailed balance condition and the historical data set, and then analyzing SS by means of simulated annealing. Checks are performed to verify the validity of the analysis method. We discuss the outcome of this analysis.