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Istituto di linguistica computazionale "Antonio Zampolli"

Torna all'elenco Contributi in rivista anno 2017

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Arabic word processing and morphology induction through adaptive memory self-organisation strategies

Anno di pubblicazione: 2017

Formato: Elettronico

Autori: Marzi, C.; Ferro, M.; Nahli, O.

Affiliazioni autori: Institute for Computational Linguistics - National Research Council

Autori CNR:

  • MARCELLO FERRO
  • CLAUDIA MARZI
  • OUAFAE NAHLI

Lingua: inglese

Abstract: Aim of the present study is to model the human mental lexicon, by focussing on storage and processing dynamics, as lexical organisation relies on the process of input recoding and adaptive strategies for long-term memory organisation. A fundamental issue in word processing is represented by the emergence of the morphological organisation level in the lexicon, based on paradigmatic relations between fully-stored word forms. Morphology induction can be defined as the task of perceiving and identifying morphological formatives within morphologically complex word forms, as a function of the dynamic interaction between lexical representations and distribution and degrees of regularity in lexical data. In the computational framework we propose here (TSOMs), based on Self-Organising Maps with Hebbian connections defined over a temporal layer, the identification/perception of surface morphological relations involves the alignment of recoded representations of morphologically-related input words. Facing a non-concatenative morphology such as the Arabic inflectional system prompts a reappraisal of morphology induction through adaptive organisation strategies, which affect both lexical representations and long-term storage. We will show how a strongly adaptive self-organisation during training is conducive to emergent relations between word forms, which are concurrently, redundantly and competitively stored in human mental lexicon, and to generalising knowledge of stored words to unknown forms.

Lingua abstract: inglese

Pagine da: 179

Pagine a: 188

Pagine totali: 10

Rivista:

Journal of King Saud University. Computer and information sciences Elsevier
Paese di pubblicazione: Paesi Bassi
Lingua: inglese
ISSN: 2213-1248

Numero volume: 29

Numero fascicolo: 2

DOI: 10.1016/j.jksuci.2016.11.006

Referee: Sė: Internazionale

Stato della pubblicazione: Published version

Parole chiave:

  • Non-concatenative morphological structure
  • Lexical storage and access
  • Topological alignment
  • Synchronisation
  • Self-Organising Maps

URL: http://www.sciencedirect.com/science/article/pii/S1319157816301148

Data di accettazione: 13/11/2016

Altre informazioni: Special issue on "Arabic Natural Language Processing: Models, Systems and Applications" edited By Vito Pirrelli and Arsalane Zarghili

Strutture CNR:

Allegati: Arabic word processing and morphology induction through adaptive memory self-organisation strategies (application/pdf)
Marzi_et_al_2017_published

 
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