An official website of the United States government
Here's how you know
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.
Soft clustering of three clusters of rectangles. In this example, the two long blue rectangles can be assigned to both the blue and red clusters; the two long green rectangles can be assigned to both the green and red clusters.