When distribution statistics are generated for the column "TYPE," the optimizer knows the real frequency of each model.

而一旦生成了关于“TYPE”列的分布统计信息，优化器即可了解每种型号真正的出现频率。

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A nonparametric kernel estimation of the flood frequency with historic information is presented in this paper. The limitation in assuming a distribution type is overcome.

本文提出了在有历史洪水情况下洪水频率的非参数核估计方法，克服了现行方法假定分布型式的局限。

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The type of syndrome, the recipe total count, medicine total count, medicine utilization frequency and medicine categorization were analyzed with frequence distribution method.

对文献中涉及的证型、方剂总数、用药总数、各药使用频率、用药分类主要采用频数分布法进行统计分析。

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