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.
Description of different ordinary daily activities identified by the neg_category attribute.
| neg_category | Description of the ordinary daily activity | Duration |
|---|---|---|
| 1 | random walking and random stop | 8 minutes |
| 2 | empty floor | 10 seconds |
| 3 | one step forward then waiting 5 seconds in position, repeat | 1 minute |
| 4 | random walking | 10 seconds |
