In addition, a visual model adds value to the project if it can be leveraged to jumpstart a project task or a future activity such as method evolution, maintenance, knowledge transfer, or training.

另外，如果可视的模型可以用于开始项目的任务或未来的活动，例如方法演进、维护、知识传递，或培训，那么可视的模型就给项目增加了价值。

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An overlay model of user knowledge can be represented as a set of pairs "concept - value", one pair for each domain concept.

用户知识的叠加模型可以用一个“概念-值”值对的集合来描述，其中每个值对用于领域中的一个概念。

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For each domain model concept, an individual overlay model stores some value which is an estimation of the user knowledge level of this concept.

对于每个领域模型中的概念，单个的叠加模型中都存储了用户对这个概念的认知程度的评价值。

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