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.
Distribution of the content completeness score for the four search queries (A–D) in three classes of the ranking of the query result: 1 to 10, 11 to 30, and 31 to 200, based on the initial, unfiltered search (definition of search query (A–D), see Section 2).
