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.
Rules to generate features for classifiers
| Feature type | Unit | Effective region (window) |
|---|---|---|
| Neighbor context | uni | Previous and next words to the abbreviation x |
| Local context | uni, bi | Three words previous and next to the abbreviation x |
| Sentence context | uni, bi | Words in the same sentence for x |
| Abstract context | uni, bi | Words in the same abstract for x |
