Title
Effective Multi-Dialectal Arabic Pos Tagging
Abstract
This work introduces robust multi-dialectal part of speech tagging trained on an annotated data set of Arabic tweets in four major dialect groups: Egyptian, Levantine, Gulf, and Maghrebi. We implement two different sequence tagging approaches. The first uses conditional random fields (CRFs), while the second combines word- and character-based representations in a deep neural network with stacked layers of convolutional and recurrent networks with a CRF output layer. We successfully exploit a variety of features that help generalize our models, such as Brown clusters and stem templates. Also, we develop robust joint models that tag multi-dialectal tweets and outperform uni-dialectal taggers. We achieve a combined accuracy of 92.4% across all dialects, with per dialect results ranging between 90.2% and 95.4%. We obtained the results using a train/dev/test split of 70/10/20 for a data set of 350 tweets per dialect.
Year
DOI
Venue
2020
10.1017/S1351324920000078
NATURAL LANGUAGE ENGINEERING
Keywords
DocType
Volume
Part-of-speech tagging, Arabic, Dialects, Deep neural network, Brown clusters
Journal
26
Issue
ISSN
Citations 
6
1351-3249
0
PageRank 
References 
Authors
0.34
0
8
Name
Order
Citations
PageRank
Darwish Kareem161552.39
Mohammed Attia214616.51
Hamdy Mubarak314019.60
Samih Younes43811.26
Ahmed Abdelali515225.84
Lluís Màrquez600.34
Mohamed Eldesouki722.05
Laura Kallmeyer816538.11