Unified Medical Language System® (UMLS®)
Lexical Variant Generation (LVG)
The Lexical Variant Generation program contains a series of commands that can be selected and combined to perform lexical transformations to text. A variety of commands are available to process lexical variations such as:
- Inflections and conjugations
- Word order in multi-word terms
- Alphabetic case
Users can create their own sequence of commands to process text to meet the needs of their applications. The Norm program is a predefined set of commands from the LVG program packaged together.