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.
Scatter plots of the posterior probability of normal (black triangles) and HBV (red circles) serum sample as calculated for (A) SERS spectrum, (B) first-order derivative spectrum, respectively, using the PCA-LDA together with leave-one-out cross-validation method. The posterior probability corresponding to the dashed separation line is 0.5.
