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.
Sentences: Change in F1 scores over time at the sentence level. The colored points represent individual participants. The gray band marks the average score and tapers off in thickness to represent the decreasing number of participants completing higher numbers of revisions.
