Rough set data analysis in the knowledge discovery in database (KDD) is different to other KDD methods, especially with respect to model assumption.

粗集数据分析不同于其它知识发现方法，特别在模型假设方面的一种方法。

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If the model USES only one churn rate, the assumption is that the churn rate is constant across the life of the customer relationship.

如果一个模型只用一个流失率，那就是它假设客户关系的生命周期中流失率不变。

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In other words, the scarcity assumption has disappeared, which poses a challenge to the telcos' "Intelligent Network" model.

换句话说，稀缺性假设已经消失，这对电信公司的“智能网络”模型提出了一个挑战。

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An implicit assumption in the model is that unused resources would remain unused in the absence of some project.

FORBES: Good News from Sequester: End to (Some) Bad Economic Analysis

When a 20 percent soda tax is recomputed according to a dynamic model, a 20-pound loss after five years turns into a four pound loss (assuming, that is, every other assumption in the tax model is also correct).

FORBES: New Survey: Majority Of Americans Oppose Soda Tax; Support Strongest Among The Young, The Wealthy And The Thin