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.
The procedure of the attention block. The color bar represents the trends of confidence values, and the red and blue denote 1 and 0, respectively. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
