Description: Random walk model assumes that the yield is independent of each period, and the distribution of the yield of different periods are the same. To better understand the image of a random walk model, think on the roulette wheel show a variety of different yields for each of the rotating wheel, it can be obtained in accordance with the corresponding period of the next earnings mark on the wheel . But among the results of each wheel rotation is not linked, so past and future earnings yield rate is irrelevant. However, due to the rotation of each wheel is the same, so the yield of each of the wheels are subject to the same distribution.
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circlecreat.m
random.m
random_model.m
circle.m
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