Fig. 2.
Two ways to split the features and labels into a training set and a test set: (a) splitting by days, (b) splitting by participants.
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.