In these research areas, sample classification based on gene expression data is acting a very important role, it generally has two pivotal steps: gene selection and Classifier design.

在这个研究领域里，基于基因表达数据的样本分类扮演着很重要的角色，它一般具有两个关键步骤：基因选择和分类模型设计。

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Constructing an effective text classifier plays a key role in text categorization.

构建一个分类准确的文本分类器是文本分类的关键。

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