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.
TDMIXY and TDMIYX indicate information flow from X to Y (bold arrow) and vice versa (arrow). If two systems X and Y mutually communicate with each other, there is information flow in each direction. The difference between TDMIXY and TDMIYX shows the net flux of information (NIXY, dotted arrow) which can indicate the direction and amount of information flow between them. In this paper, all information indicates net information flow.
