The Asserted Value Set services are integrated parts of the LexEVS API. It provide several functions:
Getting Source Asserted Value Sets as CodingScheme or Coding Scheme reference objects
Getting the entities of Source Asserted Value Sets as ResolvedConceptReference objects as Lists or Iterators
Getting a list of all unique identifiers of value set top nodes from this source terminology
Getting a list of all schemes used to resolve a given set of values from a resolved value set coding scheme
Most coding scheme representations and entity reference sets are resolved by the unique URL of the coding scheme. Some allow a definition of a concept or text match. All methods offer a resolution service to some set of values. These mechanisms are largely read functions requiring a listing of known values or an exact match of a unique identifier. Only one offers what could be classified as a search.
LexEVS Value Set Definition Services provides three major functions:
Each of these functions are described in following sections.