Figure 1.
Flowchart showing how the freetext matching algorithm analyses a text. Flowchart showing the stages in analysis of a text, with an example of analysis.
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.