FoR-UNL (Framework of Reference for UNL) is a guideline used to describe achievements of natural languages in relation to UNL. It was inspired by the Common European Framework of Reference for Languages (CEFR), and its main goal is to provide a method for assessing the availability and quality of natural language resources inside the UNL System.
The FoR-UNL classifies languages in three broad divisions which can be divided into six levels, according to the recall and precision of the corresponding resources:
- A - Basic Level
- A1 - Breakthrough or beginner
- A2 - Waystage or elementary
- B - Intermediate Level
- B1 - Threshold or intermediate
- B2 - Vantage or upper intermediate
- C - Advanced Level
- C1 - Effective Operational
- C2 - Mastery
The descriptors below inform what is required for a language to be classified in each level:
- MIR is a GD (generation dictionary) project
- BRUNO is an AD (analysis dictionary) project
- NADIA is ND (natural language dictionary) project
- GG is the Generation (UNL->NL) Grammar
- AG is the Analysis (NL->UNL) Grammar
- A dictionary (GD, AD, ND) is considered completed when all its entries are either valid or reported as underspecified or overspecified.
- A gramamr (GG, AG) is considered completed if its F-measure is equal or higher than 0.8.