Figure 8. Thematic visualization of keywords.
The figure provides a thematic visualization of keywords, mapping them across four quadrants based on their relevance (centrality) and developmental stage (density).
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.