HPSG Grammar for Arabic Coordination Experimented with LKB System

The existing applications in Natural Language Process (NLP) weren’t reliable. Indeed, many complex phenomena are not treated completely such as relatives, juxtaposition, ellipsis and the coordination, essentially for Arabic grammar. In fact, the problems encountered relate to the choice of the formalism and the parser validating the constructed grammar. Therefore, our work aims to appreciate the different forms of Arabic coordination. Moreover, we plan to represent them with an adequate formalism, the Head-driven Phrase Structure (HPSG). The constructed grammar was validated with Linguistic Knowledge Builder (LKB), a parser generator system.