@inproceedings{a12c03d254a84dc0966ba59e3380efae,
title = "Topic tracking based on keywords dependency profile",
abstract = "Topic tracking is an important task of Topic Detection and Tracking (TDT). Its purpose is to detect stories, from a stream of news, related to known topics. Each topic is {"}known{"} by its association with several sample stories that discuss it. In this paper, we propose a new method to build the keywords dependency profile (KDP) of each story and track topic basing on similarity between the profiles of topic and story. In this method, keywords of a story are selected by document summarization technology. The KDP is built by keywords co-occurrence frequency in the same sentences of the story. We demonstrate this profile can describe the core events in a story accurately. Experiments on the mandarin resource of TDT4 and TDT5 show topic tracking system basing on KDP improves the performance by 13.25\% on training dataset and 7.49\% on testing dataset comparing to baseline.",
keywords = "Keywords dependency profile, Topic detection and tracking, Topic tracking, Word co-occurrence",
author = "Wei Zheng and Yu Zhang and Yu Hong and Jili Fan and Ting Liu",
year = "2008",
doi = "10.1007/978-3-540-68636-1\_13",
language = "英语",
isbn = "3540686339",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
pages = "129--140",
booktitle = "Information Retrieval Technology - 4th Asia Information Retrieval Symposium, AIRS 2008, Revised Selected Papers",
note = "4th Asia Information Retrieval Symposium, AIRS 2008 ; Conference date: 15-01-2008 Through 18-01-2008",
}