从可预测性的角度将风险定义为实际与预测结果的偏差，并利用收益序列的噪声对其进行度量。
Risk can be defined as the difference of the real and forecasted result from the point of predictability, and can be measured by the noise of return series.
若收益是可预测的，则在一定程度上表明市场是无效的。
If return is predictable, it means that market is inefficient to some extent.
股票收益率的可预测性是资产定价研究中的核心问题。
Forecasting stock yield is the kernel problem in researching asset price-making.
资产的可销售性取决于购求愿望，后者又取决于其他人如何预测由于利用该项资产而可能获取的未来收益。
Marketability is dependent on desirability, which in turn is dependent on how others project the future benefits derived from the utility of the property.
在手动预测解决方案的情况下（酒店没有收益管理系统），预测后的活动可呈现在excel 数据表上，以理想的组合或其它本地系统作为原点。
In the case of a manual forecastingsolution (no RMS in the hotel) the forecasted activity can be on a excel spread sheet and can have as an origin anideal mix or other local system.
在手动预测解决方案的情况下（酒店没有收益管理系统），预测后的活动可呈现在excel 数据表上，以理想的组合或其它本地系统作为原点。
In the case of a manual forecastingsolution (no RMS in the hotel) the forecasted activity can be on a excel spread sheet and can have as an origin anideal mix or other local system.
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