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To solve the difficulties of manually categorizing news documents, the topic generation is related to the news event probing and tracking. Deeper researches on how to organize and manage generated news events, the detailed procedure of obtaining special events as well as the retrieval of news events have been done in this thesis.With this method , we can improve system efficiency and accuracy of organizing news topics., authors=TAN Hao^1,2, JIA Zi-yan³, SHI Zhong-zhi⁴, authorsList=TAN Hao;JIA Zi-yan;SHI Zhong-zhi, authorCompany=1. University of Science and Technology of China, Beijing 100039, China;2. Institute of Computing Technology ,Chinese Academy of Sciences, Beijing 100080, China;3. 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