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- W2740324911 abstract "With a great deal of digitized textual information now available on the internet, it is almost impossible for people to assimilate all the information timely. Therefore, the technologies of topic detection and tracking are used for constructing news topics from news stories in order to bring convenience to people. However, traditional topic detection methods are not always so effective in detecting emerging hot news topics in a short period of time, and most topic detection methods use single-pass clustering algorithm which is with low accuracy and very sensitive to the input sequence of news documents. In order to improve clustering accuracy, we utilize a temporal distance factor to segment timeline into equal parts and propose a novel two-times single-pass clustering algorithm to deal with news stories in each part of timeline separately. Moreover, the aging theory is combined with our approach to build life-span model of topics from which we can obtain variation trend of hotness value of topics. The results of experiments show that our approach is effective and the life circle model of topics established by our method can conform to reality well." @default.
- W2740324911 created "2017-08-08" @default.
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- W2740324911 date "2016-02-28" @default.
- W2740324911 modified "2023-10-18" @default.
- W2740324911 title "Online Hot Topic Detection Based on Segmented Timeline and Aging Theory" @default.
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- W2740324911 doi "https://doi.org/10.14257/ijhit.2016.9.2.22" @default.
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