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Althobaiti, M. ; Kruschwitz, Udo ; Poesio, Massimo

Combining Minimally-supervised Methods for Arabic Named Entity Recognition

Althobaiti, M., Kruschwitz, Udo and Poesio, Massimo (2015) Combining Minimally-supervised Methods for Arabic Named Entity Recognition. Transactions of the Association for Computational Linguistics TACL 3 (3), pp. 243-256.

Date of publication of this fulltext: 13 Jun 2019 13:22
Article
DOI to cite this document: 10.5283/epub.40345


Abstract

Supervised methods can achieve high performance on NLP tasks, such as Named Entity Recognition (NER), but new annotations are required for every new domain and/or genre change. This has motivated research in minimally supervised methods such as semi-supervised learning and distant learning, but neither technique has yet achieved performance levels comparable to those of supervised methods. ...

Supervised methods can achieve high performance on NLP tasks, such as Named Entity Recognition (NER), but new annotations are required for every new domain and/or genre change. This has motivated research in minimally supervised methods such as semi-supervised learning and distant learning, but neither technique has yet achieved performance levels comparable to those of supervised methods. Semi-supervised methods tend to have very high precision but comparatively low recall, whereas distant learning tends to achieve higher recall but lower precision. This complementarity suggests that better results may be obtained by combining the two types of minimally supervised methods. In this paper we present a novel approach to Arabic NER using a combination of semi-supervised and distant learning techniques. We trained a semi-supervised NER classifier and another one using distant learning techniques, and then combined them using a variety of classifier combination schemes, including the Bayesian Classifier Combination (BCC) procedure recently proposed for sentiment analysis. According to our results, the BCC model leads to an increase in performance of 8 percentage points over the best base classifiers.



Involved Institutions


Details

Item typeArticle
Journal or Publication TitleTransactions of the Association for Computational Linguistics TACL
Publisher:Association for Computational Linguistics
Volume:3
Number of Issue or Book Chapter:3
Page Range:pp. 243-256
Date2015
InstitutionsLanguages and Literatures > Institut für Information und Medien, Sprache und Kultur (I:IMSK) > Lehrstuhl für Informationswissenschaft (Prof. Dr. Udo Kruschwitz)
Informatics and Data Science > Department Human-Centered Computing > Lehrstuhl für Informationswissenschaft (Prof. Dr. Udo Kruschwitz)
Dewey Decimal Classification000 Computer science, information & general works > 020 Library & information sciences
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgUnknown
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-403453
Item ID40345

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