Enhancing topic tracking with temporal information

9 years 8 months ago
Enhancing topic tracking with temporal information
In this paper, we propose a new strategy with time granularity reasoning for utilizing temporal information in topic tracking. Compared with previous ones, our work has four distinguished characteristics. Firstly, we try to determine a set of topic times for a target topic from the given on-topic stories. It helps to avoid the negative influence from other irrelevant times. Secondly, we take into account time granularity variance when deciding whether a coreference relationship exists between two times. Thirdly, both publication time and times presented in texts are considered. Finally, as time is only one attribute of a topic, we increase the similarity between a story and a target topic only when they are related not only temporally but also semantically. Experiments on two TDT corpora show that our method makes good use of temporal information in news stories. Categories and Subject Descriptors H.3.3 [Information Storage and Retrieval]: Information Search and Retrieval – Informat...
Baoli Li, Wenjie Li, Qin Lu
Added 14 Jun 2010
Updated 14 Jun 2010
Type Conference
Year 2006
Authors Baoli Li, Wenjie Li, Qin Lu
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