搜索结果: 1-7 共查到“经济学 random walk”相关记录7条 . 查询时间(0.046 秒)
On free lunches in random walk markets with short-sale constraints and small transaction costs, and weak convergence to Gaussian continuous-time processes
Stock price model random walk Gaussian processes weak con-vergence
2012/9/14
This paper considers a sequence of discrete-time random walk markets with a safe and a single risky investment opportunity, and gives conditions for the existence of arbitrages or free lunches with va...
Record statistics and persistence for a random walk with a drift
Record statistics persistence random walk with a drift
2012/9/14
We study the statistics of records of a one-dimensional random walk of nsteps,starting from the origin, and in presence of a constant bias c. At each time-step
the walker makes a random jump of lengt...
Exit times in non-Markovian drifting continuous-time random walk processes
non-Markovian drifting continuous-time random walk processes
2010/10/18
By appealing to renewal theory we determine the equations that the mean exit time of a continuous-time random walk with drift satisfies both when the present coincides with a jump instant or when it d...
A general "bang-bang" principle for predicting the maximum of a random walk
Bernoulli random walk Brownian motion optimal prediction ultimate maximum stopping time convex function
2010/11/2
Let (Bt)0tT be either a Bernoulli random walk or a Brownian motion with drift, and let Mt := max{Bs : 0 s t}, 0 t T. This paper solves the general optimal prediction problem sup 0 T E[f(MT...
Forecasting volatility with the multifractal random walk model
Forecasting volatility the multifractal random walk model
2010/12/13
We study the problem of forecasting volatility for the multifractal random walk model. In order to avoid the ill posed problem of estimating the correlation length T of the model, we introduce a limit...
Can the Random Walk Model be Beaten in Out-Of-Sample Density Forecasts? Evidence from...
Density forecasts GARCH Intraday exchange rate Jumps Maximum likelihood estimation Nonlinear time series Out-of-sample forecasts Regime-switching
2011/4/2
It has been documented that random walk outperforms most economic structural and time series models in out-of-sample forecasts of the conditional mean dynamics of exchange rates. In this paper, we stu...
Can the Random Walk Model be Beaten in Out-of-Sample Density Forecasts? Evidence from Intraday Forei
Density forecasts GARCH Intraday exchange rate Jumps Maximum likelihood estimation Nonlinear time series Out-of-sample forecasts Regime-switching
2011/4/6
It has been documented that random walk outperforms most economic structural and time
series models in out-of-sample forecasts of the conditional mean dynamics of exchange rates.