Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Relationship levels, their respective symbols, and fuzzy numbers.
Source: Adapted from Kargari [44]
| Relationship level | Linguistic variable symbol | Fuzzy numbers | ||
|---|---|---|---|---|
| a | m | b | ||
| Very low | VL | 0.0 | 0.0 | 0.25 |
| Low | L | 0.0 | 0.25 | 0.5 |
| Average | A | 0.25 | 0.5 | 0.75 |
| Strong | S | 0.5 | 0.75 | 1.0 |
| Very strong | VS | 0.75 | 1.0 | 1.0 |
| Non-existent | – | – | – | – |
