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。
The idea of the overlay model is to represent an individual user's knowledge of the subject as an "overlay" of the domain model.
叠加模型将一个用户在某个方面的知识描绘为领域模型的一个叠加。
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。
This article discusses the implementing process of MPLS Traffic Engineering and analyses the advantages of it by comparing with the overlay model.
讨论了基于MPLS的流量工程的实现过程，并通过与覆盖模型的比较，分析了基于MPLS的流量工程技术的优势。
This article discusses the implementing process of MPLS Traffic Engineering and analyses the advantages of it by comparing with the overlay model.
讨论了基于MPLS的流量工程的实现过程，并通过与覆盖模型的比较，分析了基于MPLS的流量工程技术的优势。
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