均值回归是指随着时间的向前推进，一个随机过程向其均值靠近的趋势。
Mean reversion is a tendency for a stochastic process to remain near, or tend to return over time to a long-run average value.
均值回归是指随着时间的向前推进，一个随机过程向其均值靠近的趋势。
Mean reversion is a tendency for a stochastic process to remain near, or tend to return over time to a long-run average value.
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