Normalizing Chinese temporal expressions with multi-label classification

Mingli Wu, Wenjie Li, Qing Chen, Qin Lu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

7 Citations (Scopus)

Abstract

Temporal expression contains crucial temporal information in texts. Understanding its temporal semantics is important in many NLP applications, such as information extraction, document summarization and question answering. Temporal expression normalization involves mapping from the different classes of expressions to the values of certain temporal attributes. A temporal expression may belong to one or more classes, but each class of expressions normally shares the same mapping procedure. In this paper, we explore the possibility of applying multi-label classification techniques in the context of temporal expression normalization. More specifically, two models, named independent binary classification model and compared binary classification model, are evaluated, compared and analyzed. Once the possible class(es) of a temporal expression is determined, the corresponding mapping rules are called to transform it into the corresponding attribute(s). Experiments on a substantiate data collection show that, based on the result of machine learning classification, the performance of temporal expression normalization is comparable with that of deliberate rule set.
Original languageEnglish
Title of host publicationProceedings of 2005 IEEE International Conference on Natural Language Processing and Knowledge Engineering, IEEE NLP-KE'05
Pages318-323
Number of pages6
Volume2005
DOIs
Publication statusPublished - 1 Dec 2005
Event2005 IEEE International Conference on Natural Language Processing and Knowledge Engineering, IEEE NLP-KE'05 - Wuhan, China
Duration: 30 Oct 20051 Nov 2005

Conference

Conference2005 IEEE International Conference on Natural Language Processing and Knowledge Engineering, IEEE NLP-KE'05
CountryChina
CityWuhan
Period30/10/051/11/05

ASJC Scopus subject areas

  • Engineering(all)

Cite this