针对旅游领域，提出了一种基于层叠条件随机场模型的旅游领域命名实体识别方法。
This paper presents a method for named entity recognition in the tourism domain based on the cascaded conditional random fields.
本文所研究的时间表达式识别，就是命名实体识别领域一项基础而重要的任务。
In this dissertation, it will focus on time expression recognition, which is one of the most important directions within named entity recognition research area.
本文所研究的时间表达式识别，就是命名实体识别领域一项基础而重要的任务。
In this dissertation, it will focus on time expression recognition, which is one of the most important directions within named entity recognition research area.
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