Modélisation de la coordination dans les grammaires d'interaction

We present a model of coordination within Interaction Grammars. The notion of polarity lets us define the interface of a syntactic structure as its capacity to combine with other syntactic structures in terms of requirements and resources. The coordination of two conjuncts is then viewed as the superposition of their syntactic structure interfaces. Those structures are represented by means of tree descriptions to integrate underspecification so they combine in a very flexible way. MOTS-CLÉS : coordination, grammaires catégorielles, grammaires d’interaction, grammaires formelles.