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Extracting significant time varying features from text

, and . CIKM '99: Proceedings of the eighth international conference on Information and knowledge management, page 38--45. New York, NY, USA, ACM, (1999)
DOI: http://doi.acm.org/10.1145/319950.319956

Abstract

We propose a simple statistical model for the frequency of occurrence of features in a stream of text. Adoption of this model allows us to use classical significance tests to filter the stream for interesting events. We tested the model by building a system and running it on a news corpus. By a subjective evaluation, the system worked remarkably well: almost all of the groups of identified tokens corresponded to news stories and were appropriately placed in time. A preliminary objective evaluation was also used to measure the quality of the system and it showed some of the weaknesses and the power of our approach.

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Extracting significant time varying features from text

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