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.
Prefixes are subject to a dual encoding. As for the first encoding, each nucleotide in a prefix is represented with a numerical value from 0 to 4 (A → 0, C → 1, G → 2, T → 3, N → 4). Then, these numerical representations are encoded using base-10. Finally, sorting is performed for clustering. In the figure, prefixes of length k = 8 are represented.
