Secondly, the method of region feature extraction and optimal feature selection are studied based on PCA, and the effective features are constructed for the target by the analysis of the PCA.

其次，本文研究了区域形状特征提取及基于PCA的特征选择方法，通过对区域特征进行优化选择，构造准确描述目标特性且维数较低的特征。

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For obtaining the optimum performance and power, based on the property analysis of SOC parameters, a neighborhood-region-search algorithm was presented to optimize the selection of parameters.

通过分析soc参数的基本属性，利用邻域搜索算法针对功耗进行自动参数优化，得到性能和功耗的最优解。

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Based on the data from 25-year rice anther culture breeding and contemporary conventional breeding in cold region, their selection efficiency were compared.

张云江，张淑华，孙岩松对25年寒地水稻花培育种与同期常规育种统计资料进行了比较分析。

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