Figure 7:
Entity Transition Matrices for source notes and target summaries. Summaries have fewer clusters of semantically similar entities, indicating that entity mentions are woven into a problem-oriented summary.
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.