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  1. Home > Articles & Issues >
  2. Articles >
  3. Arabic topic identif ...
Article

Arabic topic identification based on empirical studies of topic models

Marwa Naili (1), Anja Chaibi (1), Henda Ghézala ORCID (1)
(1) Laboratoire de recherche en Génie Logiciel, Applications distribuées, Systèmes décisionnels et Imagerie intelligente [Manouba]
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Submitted on
August 2, 2017
Accepted on
July 3, 2017
Published on
August 3, 2017
Last modified on
March 31, 2025
Special issue 27
Volume 27 - 2017 - Special issue CARI 2016
DOI
10.46298/arima.3102
License
Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0)
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Arabic topic identification based on empirical studies of topic models

Marwa Naili (1), Anja Chaibi (1), Henda Ghézala ORCID (1)
(1) Laboratoire de recherche en Génie Logiciel, Applications distribuées, Systèmes décisionnels et Imagerie intelligente [Manouba]
Abstract
English
This paper focuses on the topic identification for the Arabic language based on topic models. We study the Latent Dirichlet Allocation (LDA) as an unsupervised method for the Arabic topic identification. Thus, a deep study of LDA is carried out at two levels: Stemming process and the choice of LDA hyper-parameters. For the first level, we study the effect of different Arabic stemmers on LDA. For the second level, we focus on LDA hyper-parameters α and β and their impact on the topic identification. This study shows that LDA is an efficient method for Arabic topic identification especially with the right choice of hyper-parameters. Another important result is the high impact of the stemming algorithm on topic identification.
French
Cet article met l'accent sur l'identification thématique pour la langue arabe basée sur les topic models. Nous étudions l'Allocation de Dirichlet Latente (LDA) comme une méthode non supervisée pour l'identification thématique. Ainsi, une étude approfondie de LDA a été effectuée à deux niveaux: le processus de lemmatisation et le choix des hyper-paramètres. Pour le premier niveau, nous étudions l'effet des différents lemmatiseurs sur LDA. Pour le deuxième niveau, nous nous focalisons sur les hyper-paramètres α et β de LDA et leurs impacts sur l'identification. Cette étude montre que LDA est une méthode efficace pour l'identification thématique Arabe surtout avec le bon choix des hyper-paramètres. Un autre résultat important est l'impact élevé de l'algorithme de lemmatisation sur l'identification thématique.
Keywords
English
  • ACM: I.: Computing Methodologies/I.2: ARTIFICIAL INTELLIGENCE/I.2.7: Natural Language Processing/I.2.7.6: Text analysis
  • [INFO.INFO-TT]Computer Science [cs]/Document and Text Processing
  • Topic identification
  • Latent Dirichlet Allocation
  • LDA hyper- parameters α and β
  • Arabic stemmers
French
  • Identification thématique
  • Topic models
  • Allocation de Dirichlet Latente
  • hyper-paramètres α et β de LDA
  • lemmatiseurs Arabes
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