Table 2.
Six Classification Contingency Table Values
| Relevant Documents | Irrelevant Documents | |
|---|---|---|
| Positive | a | b |
| Uncertain | c | d |
| Negative | e | f |
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.