The principle and method of preferential order evaluation was described.

介绍了优序评价的原理和方法。

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Let's compromise on a 20% reduction in price on this shipment. And for your next order, we'll give you some preferential terms in addition to what you are getting from us now.

咱们折中好了，这批货物减价20%，下次你们订货时，除目前已有的条件外，我们另外再给些优惠。

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In order to discover probabilistic decision rules in preferential multiple attribute decision system with incomplete information, an extension of the rough sets model is proposed in the paper.

为了从有偏好信息但信息不完全的多属性决策系统中获取概率决策规则，提出一种新的不完全信息的多属性粗糙决策分析方法。

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