对面向主题的信息采集技术进行了探索性研究。
An explorative study on subject oriented web information acquisition techniques is provided.
面向主题的爬行技术目前已经成为网络信息检索领域新的研究热点之一。
Recently, towards topical crawling has become one of the new hot researching topics in the field of network information retrieval.
如果遇到的不是面向主题的信息，就不能仅仅通过DITA创建真正的主题。
If you do not start with topic-oriented information, you cannot create real topics just by going through DITA.
应用推荐