The LAPPS Interchange Format.

We describe and motivate the LAPPS Interchange Format, a JSON-LD format that is used for data transfer between language services in the Language Application Grid. The LAPPS Interchange Format enables syntactic and semantic interoperability of language services by providing a uniform syntax for common linguistic data and by using the Linked Data aspect of JSON-LD to refer to external definitions of linguistic categories. It is tightly integrated with the Web Services Exchange Vocabulary, which specifies a terminology for a core of linguistic objects and features exchanged by services.