Text feature extraction and text categorization is the focal point of basic research in the field of intelligent information service system.
文本信息特征提取和文本分类是当前智能信息服务系统基础研究的重点。
With popularization of DTV (Digital Television), DTV-oriented intelligent information service system gradually becomes the focus of research.
随着数字电视的逐步普及，面向数字电视的智能化信息服务系统逐渐成为研究的热点。
Text categorization and feature concept extraction is the focal point of basic research in the field of intelligent information service system.
文本分类与文本信息特征概念的提取是当前智能信息服务研究的重点。
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