You can extract more than one asset group at one time provided that you specify all required parameter values common to the asset groups.

假如你指定了那些资产组所需的所有通用参数，你就可以同时提取多个资产组了。

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The algorithm resolves the problem of selecting parameter value and can get higher classifying accuracy via selecting a group of parameter values instead of only one value.

算法通过对参数选取一组值代替仅选择一个值，克服了单个参数值选取困难的问题，能够得到更高的分类准确率。

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