与信息检索不同，信息抽取直接从自然语言文本中抽取事实信息。
Unlike information Retrieval, information Extraction Systems extract factual information directly from natural language texts.
自动信息检索系统，自动是相对于人工而言，信息是相对于数据和事实而言。
Automatic information retrieval system, automatic as opposed to manual and information as opposed to data or fact.
自动信息检索系统，自动是相对于人工而言，信息是相对于数据和事实而言。
Automatic information retrieval system, automatic as opposed to manual and information as opposed to data or fact.
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