Development of Maximally Reusable Grammars: Parallel Development of Hebrew and Arabic Grammars

We show how linguistic grammars of two different yet related languages can be developed and implemented in parallel, with language-independent fragments serving as shared resources, and language-specific ones defined separately for each language. The two grammars in the focus of this paper are of Modern Hebrew and Modern Standard Arabic, and the basic infrastructure, or core, of the grammars is based on "standard" HPSG. We identify four types of relations that exist between the grammars of two languages and demonstrate how the different types of relations can be implemented in parallel grammars with maximally shared resources. The examples pertain to the grammars of Modern Hebrew and Modern Standard Arabic, yet similar issues and considerations are applicable to other pairs of languages that have some degree of similarity.