Information extraction is a main approach for constructing database from free text corpus and for automatic collecting intelligence information.
信息抽取是从自由文本语料库构建数据库，实现情报自动收集的有效途径之一。
·2,447,543篇论文数据，部分数据来源于NoteExpress
Describe the project in the free text box.
在自由文本框中描述项目情况。
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Free text can be plotted using the tag cloud and tree map chart types.
可以使用标记云和树型图表类型绘制自由的文本。
Going back to Listing 2, the contents of the elements use a free text format.
回到清单2，元素的内容使用自由文本格式。
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