Table 1.

An example of how the number of tokens and PHI density influences the sum of token uncertainty.

Feature	Document d1	Document d2
Total number of non-PHI tokens	1000	100
Average non-PHI token confidence	0.99	0.99
Total number of PHI tokens	5	10
Average PHI token confidence	0.6	0.6
PHI density	0.5%	9.1%
Sum of tokens uncertainty	12	5