Ahmed Hamdi


2020

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Alleviating Digitization Errors in Named Entity Recognition for Historical Documents
Emanuela Boros | Ahmed Hamdi | Elvys Linhares Pontes | Luis Adrián Cabrera-Diego | Jose G. Moreno | Nicolas Sidere | Antoine Doucet
Proceedings of the 24th Conference on Computational Natural Language Learning

This paper tackles the task of named entity recognition (NER) applied to digitized historical texts obtained from processing digital images of newspapers using optical character recognition (OCR) techniques. We argue that the main challenge for this task is that the OCR process leads to misspellings and linguistic errors in the output text. Moreover, historical variations can be present in aged documents, which can impact the performance of the NER process. We conduct a comparative evaluation on two historical datasets in German and French against previous state-of-the-art models, and we propose a model based on a hierarchical stack of Transformers to approach the NER task for historical data. Our findings show that the proposed model clearly improves the results on both historical datasets, and does not degrade the results for modern datasets.

2015

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POS-tagging of Tunisian Dialect Using Standard Arabic Resources and Tools
Ahmed Hamdi | Alexis Nasr | Nizar Habash | Núria Gala
Proceedings of the Second Workshop on Arabic Natural Language Processing

2014

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Automatically building a Tunisian Lexicon for Deverbal Nouns
Ahmed Hamdi | Núria Gala | Alexis Nasr
Proceedings of the First Workshop on Applying NLP Tools to Similar Languages, Varieties and Dialects

2013

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Translating verbs between MSA and arabic dialects through deep morphological analysis (Un système de traduction de verbes entre arabe standard et arabe dialectal par analyse morphologique profonde) [in French]
Ahmed Hamdi | Rahma Boujelbane | Nizar Habash | Alexis Nasr
Proceedings of TALN 2013 (Volume 1: Long Papers)

2012

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Apport de la diacritisation de l’analyse morphosyntaxique de l’arabe (Apport of Diacritization in Arabic Morpho-Syntactic Analysis) [in French]
Ahmed Hamdi
Proceedings of the Joint Conference JEP-TALN-RECITAL 2012, volume 3: RECITAL