但是新奇而深刻的是，像一段音乐这样的物品，它的相似度需要通过它的“基因”构成来衡量。
But what is new and profound here is that similarity of an item like a piece of music needs to be measured in terms of its "genetic" make up.
为了使相似性衡量尺度与样本特征的分布特点相适应，提出利用相似度分割特征集的混合核函数构造方法。
In order to adjust the similarity metrics to the distribution of the feature, a kernel function construction based on feature set division is proposed.
内容提要本文利用中国1997年、2002年、2007年投入产出表，测算了35个工业部门1997—2008年历年的产业相似度矩阵，并以此为权数构建了衡量产业间技术溢出的指标。
Based on the IO table of year 1997, 2002 and 2007, this paper calculate the industries' similarity matrix and conceive a new variable measuring the inter-industry technology spillover.
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