random walk theory

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random walk theory

n
(Stock Exchange) stock exchange the theory that the future movement of share prices does not reflect past movements and therefore will not follow a discernible pattern
References in periodicals archive ?
2008; Langbein, 2012; Williams, 2003) and shown that the most present types of noise in GPS time series analysis is: Power - law plus white noise, white noise only, a combination between white noise and random walk and a combination between white noise and flicker noise.
His topics include the pendulum with multiplicative noise, white and colored noise, the stability of an oscillator with random mass, a probabilistic approach to a deterministic pendulum, and whether order and chaos are contradictory.
In interpreting of AE signals, the periodic components characterize, as a rule, deterministic noise, white noise corresponds to random electronic noise, and the impulse components characterize the AE signals.