Fig. 8.
Relationship curves on positive cases (a), negative cases (b) and overall validation set (c), respectively. Values on the curves denote the normalized correlation coefficients of items.
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.