Narrowed Extended XPath I (NEXI)

INEX has through the years provided two types of queries: Content-Only queries (CO) and Content-And-Structure queries (CAS). The CO language has not changed much, but the CAS language has been more problematic. For the CAS queries, the INEX 02 query language proved insufficient for specifying problems for INEX 03. This was addressed by using an extended version of XPath, which, in turn, proved too complex to use correctly. Recently, an INEX working group identified the minimal set of requirements for a suitable query language for future workshops. From this analysis a new IR query language NEXI is introduced for upcoming workshops.