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.
vs. 
according to the numerical results of Eq. 6.
The red, black and blue line correspond to the cases of 
, 
and 
. The system sizes (i.e., the total number of word occurrences), from left to right, are 
, 
and 
. Fitting exponent 
is obtained by the least square method. The fitting lines and numerical results almost completely overlap.
