说明：目前信息抽取的主要研究方向是命名实体识别、指代消解、实体语义关系抽取、事件探测等几个领域。本资料包含7篇关于关系抽取的相关经典论文。

-Note: At present, the main research direction of information extraction is named entity recognition, anaphora resolution, entity semantic relation extraction, event detection, and several other areas. This information is collected on the relationship contains seven papers related to the classic.