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.

Combinatorial Methods for Trust and Assurance ACTS

Combinatorial Methods in Testing

Testing is roughly 50% of the cost of producing consumer software, and can be 90% or more of the cost for a critical application such as aviation.  Combinatorial methods can provide huge reductions in this cost.

Created May 24, 2016, Updated June 02, 2025