I3rab: A New Arabic Dependency Treebank Based on Arabic Grammatical Theory

Treebanks are valuable linguistic resources that include the syntactic structure of a language sentence in addition to part-of-speech tags and morphological features. They mainly utilized modeling statistical parsers. Although natural parser has recently become more accurate for languages such as English, those Arabic still have low accuracy. The purpose this article is construct new dependency treebank based on traditional grammatical theory characteristics language, investigate their effects accuracy proposed treebank, called I3rab, contrasts with existing treebanks two main concepts. first concept approach determining word sentence, second representation joined covert pronouns. To evaluate we compared its performance against subset Prague Dependency Treebank shares comparable level details. conducted experiments show percentage improvement reached up 10.24% UAS 18.42% LAS.