multiple features selection 多特征选择
image features selection 图像特征选择
image features selection and analysis 图像特征提取和分析
optimal selection of features 特征的优化选择
selection of color features 色彩特征选择
Text features selection algorithm based on sentence elements.
本文研究中主要的创新点包括：1、基于句子成分的文本特征提取。
参考来源 - 文本的特征提取及KNN分类优化问题研究This paper discusses the criterions for distinguishing different Chinese dialects and the basic features selection firstly. According to these principals,a novel feature named district differential cepstral feature was proposed.
本文首先讨论了汉语方言辨识的依据及特征选取的基本原则,并由此导出了区间差分倒谱特征。
参考来源 - 基于语音配列的汉语方言自动辨识 in C·2,447,543篇论文数据，部分数据来源于NoteExpress
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