GDL

Journal from gdlhub / 2017-08-14 14:07:09
Oleh : Amine Chennoufi, Azzeddine Mazroui, King Saud University
Dibuat : 2017-04-14, dengan 1 file

Keyword : Arabic languageAutomatic diacritizationArabic diacritical marksMorphological analysisSmoothing techniquesHidden Markov model
Url : http://www.sciencedirect.com/science/article/pii/S1319157816300428
Sumber pengambilan dokumen : web

The diacritical marks of Arabic language are characters other than letters and are in the majority of cases absent from Arab writings. This paper presents a hybrid system for automatic diacritization of Arabic sentences combining linguistic rules and statistical treatments. The used approach is based on four stages. The first phase consists of a morphological analysis using the second version of the morphological analyzer Alkhalil Morpho Sys. Morphosyntactic outputs from this step are used in the second phase to eliminate invalid word transitions according to the syntactic rules. Then, the system used in the third stage is a discrete hidden Markov model and Viterbi algorithm to determine the most probable diacritized sentence. The unseen transitions in the training corpus are processed using smoothing techniques. Finally, the last step deals with words not analyzed by Alkhalil analyzer, for which we use statistical treatments based on the letters. The word error rate of our system is around 2.58% if we ignore the diacritic of the last letter of the word and around 6.28% when this diacritic is taken into account

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