Abstract
In the context of the Linguistic Applications (LAPPS) Grid project, we have undertaken the definition of a Web Service Exchange Vocabulary (WS-EV) specifying a terminology for a core of linguistic objects and features exchanged among NLP tools that consume and produce linguistically annotated data. The goal is not to define a new set of terms, but rather to provide a single web location where terms relevant for exchange among NLP tools are defined and provide a “sameAs” link to all known web-based definitions that correspond to them. The WS-EV is intended to be used by a federation of six grids currently being formed but is usable by any web service platform. Ultimately, the WS-EV could be used for data exchange among tools in general, in addition to web services.