-

The aim of this paper is the introduction of the conception and realization of a morpho -syntactic phrase of Arabic designed for applications to automatic indexing and computer-assisted instruction of the language (CAI). One of the chief extensions to this research is the automatic processing of natural language by means of artificial intelligence systems.
The main interest of this contribution is to study the automatic recognition of noun phrases in Arabic. In the case of automatic indexing, the recognition of the noun phrases would allow the apprehension of the content of the document. Automatic indexing, just as manual indexing, consists of selecting in every document, the most informative elements which actually are descriptors or noun phrases
(NP).
The setting up or conception of such a phrase demands, primarily, a correct segmentation and categorization of any lexico-syntactic forms in the corpus. After having established all the transcription rules needed for the recognition of NP, we shall then transcribe.