A simple and feasible case model described by structured data is proposed. The calculation of case similarity is discussed and the specific method of case retrieve is introduced.

建立了简洁可行的用结构化数据表示的实例描述模型，分析了实例相似度的计算问题并介绍了实例检索的具体方法。

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The quickest approach is to look at what customers currently do, or look at historical case studies that bear some similarity to your idea.

最快的方法是看一下客户目前的做法，或通过历史案例研究,以此来证明与你的相似。

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However, even that similarity was not enough in that case.

然而，即使这样的相似性是不够的在这种情况下。

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The basic similarity between late Rome and present-day America is that in each case manmade political and social developments seriously damaged a formerly robust commercial world, leading to enormous disparities in wealth and opportunity.

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