A set of rules and conventions that define the scope of resources for which a collection of identifiers may proxy, the syntax for generating new identifiers, the kinds of representations that are rec
ognized for the identified resources, and how an identifier is dereferenced to obtain the desired representation.
A logical test that allows distinguishing a specific instance of a certain class from all other instances of that class. (see Guarino and Welty, 2000; ). See also Unity condition.
Instrument Data File Set (IDFS) is a set offiles written in a prescribed format which contain data, timing data, andmeta-data. IDFS was developed at Southwest Research Institute (SwRI).