Topic and Subject Detection in News Streams for Multi-document Summarization

Fumiyo Fukumoto, Yoshimi Suzuki, Atsuhiro Takasu

2012

Abstract

This paper focuses on continuous news streams and presents a method for detecting salient, key sentences from stories that discuss the same topic. Our hypothesis about key sentences in multiple stories is that they include words related to the target topic, and the sub ject of a story. In addition to the TF-IDF term weighting method, we used the result of assigning domain-specific senses to each word in the story to identify a subject. A topic, on the other hand, is identified by using a model of ”topic dynamics”. We defined a burst as a time interval of maximal length over which the rate of change is positive acceleration. We adapted stock market trend analysis technique, i.e., Moving Average Convergence Divergence (MACD). It shows the relationship between two moving averages of prices, and is popular indicator of trends in dynamic marketplaces. We utilized it to measure topic dynamics. The method was tested on the TDT corpora, and the results showed the effectiveness of the method.

Paper Citation

in Harvard Style

Fukumoto F., Suzuki Y. and Takasu A. (2012). Topic and Subject Detection in News Streams for Multi-document Summarization . In Proceedings of the International Conference on Knowledge Engineering and Ontology Development - Volume 1: KEOD, (IC3K 2012) ISBN 978-989-8565-30-3, pages 166-171. DOI: 10.5220/0004109901660171

in Bibtex Style

@conference{keod12,
author={Fumiyo Fukumoto and Yoshimi Suzuki and Atsuhiro Takasu},
title={Topic and Subject Detection in News Streams for Multi-document Summarization},
booktitle={Proceedings of the International Conference on Knowledge Engineering and Ontology Development - Volume 1: KEOD, (IC3K 2012)},
year={2012},
pages={166-171},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004109901660171},
isbn={978-989-8565-30-3},
}

in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Knowledge Engineering and Ontology Development - Volume 1: KEOD, (IC3K 2012)
TI - Topic and Subject Detection in News Streams for Multi-document Summarization
SN - 978-989-8565-30-3
AU - Fukumoto F.
AU - Suzuki Y.
AU - Takasu A.
PY - 2012
SP - 166
EP - 171
DO - 10.5220/0004109901660171