Aptech Systems, Inc. Worldwide Headquarters
Aptech Systems, Inc.
2350 East Germann Road, Suite #21
Chandler, AZ 85286
Ready to Get Started?
Request Quote & Product Information
Training & Events
Step-by-step, informative lessons for those who want to dive into GAUSS and achieve their goals, fast.
Have a Specific Question?
Q&A: Register and Login
Premier Support and Platinum Premier Support are annually renewable membership programs that provide you with important benefits including technical support, product maintenance, and substantial cost-saving features for your GAUSS System or the GAUSS Engine.
Join our community to see why our users are considered some of the most active and helpful in the industry!
Where to Buy
Recent Tagsapplications character vectors CML CMLMT Constrained Optimization datasets dlibrary dllcall econometrics error error codes error handling errors Excel file i/o floating network GAUSS Engine GAUSS Light graphics GUI hotkeys installation Java API license licensing linux loading data loops matrices matrix manipulation Maxlik MaxLikMT Memory multidimensional array optimization Optmum output panel data PQG graphics procs random numbers strings structures threading writing data
Time Series 2.0 MT
Find out more now
Time Series MT 2.1
Find out more now
Maxlik/Maximum Likelihood vs MLMT/ Maximum Likelihood MT
What are the differences between Maxlik/Maximum Likelihood vs MLMT/ Maximum Likelihood MT?
Maxlikmt is a more advanced version of Maxlik. First, it uses a PV structure for parameters, and a DS structure for data. The PV structure allows you to store parameters in their original state, i.e., a matrix, or a vector, or symmetric matrix, and there is a method for specifying which elements are fixed and with are free parameters.
The use of structures means that the Maxlikmt run can be multi-threaded, i.e., you can run several of them at a time.
Also Maxlikmt allows for bounds on parameters.
Note: MLMT is not backwards compatible. If a user wants to run older code, they may need to use Maxlik 5.0.