random walk


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random walk

[′ran·dəm ′wȯk]
(mathematics)
A succession of movements along line segments where the direction and possibly the length of each move is randomly determined.
References in periodicals archive ?
Fourteen years of daily closing prices from July 1, 1997 to July 1, 2011 were studied to test the random walk hypothesis.
Firstly, all the variations of the random walk algorithm allow obtaining unbiased model estimates, most likely because of the correction term for unequal sampling probabilities of routes.
Share price behaviour in India: A spectral analysis of random walk hypothesis.
Consistent with the previous work of random walk model, Osborne (1959, 1962) suggested that the market conditions would lead to random walk model.
As another example, in [4] random walks are used as a tool for sampling complex networks.
The simulation is done with different nodes in wireless sensor networks with respect to the random-based mobility model: Random Waypoint, Random Walk and Random direction models.
14) were able to eliminate the inventory random walk with a user defined production lead time, N, and customer service level (Fig.
Before formulating the main results, notice that Hinderer and Walk [4] investigated processes more general than random walks with a barrier but the circle of problems they considered was different from ours.
Four time-series models are employed as expectation models: account-specific Box-Jenkins ARIMA models, a random walk, a seasonal random walk, and a vector autoregressive model.
As the requirement for high-throughput, low-latency trading systems has migrated from the domain of equities marketplaces and agency desks to span across asset classes and the buy side, significant investment is being made in next-generation COTS and custom platforms," said Lloyd Altman, SVP of Consulting at Random Walk.
t], and [phi] = 0 for the levels version, and various random walk models including: [DELTA][p.
Ellis wrote Winning the Loser's Game: Timeless Strategies for Successful Investing and Capital: The Story of Long-Term Investment Excellence; Malkiel wrote A Random Walk Down Wall St.