A multi-relational term scheme for first story detection

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Yanghui Rao
  • Qingyuan Wu
  • Haoran Xie
  • Fu Lee Wang
  • Tao Wang

Detail(s)

Original languageEnglish
Pages (from-to)42-52
Journal / PublicationNeurocomputing
Volume254
Early online date3 Mar 2017
StatePublished - 6 Sep 2017

Abstract

First Story Detection (FSD) aims to identify the first story for an emerging event previously unreported, which is essential to practical applications in news analysis, intelligence gathering, and national security. Compared to information retrieval, text clustering, text classification, and other subject-based tasks, FSD is event-based and thus faces the challenging issues of multiple events on the same subject and the evolution of events. To tackle these challenges, several schemes for exploiting temporal information, named entity, and topic modeling, have been proposed for FSD. In this paper, we present a new term weighting scheme called LGT, which jointly models the Local element, Global element, and Topical association of each story. An unsupervised algorithm based on LGT is then devised and applied to FSD. We evaluate 4 feature reduction strategies and test our LGT scheme on an online model. Experiments show that our approach yields better results than existing baseline schemes on both retrospective and online FSD.

Research Area(s)

  • Feature reduction, First story detection, Latent Dirichlet allocation, polysemous, Synonymous

Citation Format(s)

A multi-relational term scheme for first story detection. / Rao, Yanghui; Li, Qing; Wu, Qingyuan; Xie, Haoran; Wang, Fu Lee; Wang, Tao.

In: Neurocomputing, Vol. 254, 06.09.2017, p. 42-52.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal