block topic extraction Block主题提取
topic words extraction 主题词提取
Topic sentence extraction 主题句抽取
data extraction from topic 数据析取技术
Traditional topic extraction methods acquire web pages' topics only by analyzing the pages' content, and the analyzing results are not very accurate.
传统的主题抽取方法单纯依靠分析网页内容的来自动获取网页主题，其分析结果并不十分精确。
The topic of this article is the selection and extraction of data from an Apache Derby database.
本文的主题是从Apache Derby数据库中选择和提取数据。
Extraction of the topic from utterances is part of the discourse analysis in a spoken dialog system.
语句的主题提取是口语对话系统中话语分析部分的工作。
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