[RMCProfile-users] [EXTERNAL] Automated weight optimization function

[Zhang, Yuanpeng]

Hi Tom,

We have a detailed documentation about the weight optimization in the manual - refer to the Appendix E in this link, https://rmcprofile.pages.ornl.gov/nav_pages/manual/

Please let me know if that does not make sense to you and I can for sure share more.

Cheers,
Yuanpeng

-- 


Dr. Yuanpeng Zhang 
Neutron Scattering Scientist 
Spallation Neutron Source 

Oak Ridge National Laboratory 
1 bethel valley road, Oak Ridge, TN 37830, US 
Mobile: +1(865)-335-4818 
Email: zhangy3 at ornl.gov <mailto:zhangy3 at ornl.gov> | Web: https://www.iris2020.net <https://www.iris2020.net/> 




On 1/11/23, 05:17, "rmcprofile-users on behalf of Tomas Northam via rmcprofile-users" <rmcprofile-users-bounces at shadow.nd.rl.ac.uk <mailto:rmcprofile-users-bounces at shadow.nd.rl.ac.uk> on behalf of rmcprofile-users at shadow.nd.rl.ac.uk <mailto:rmcprofile-users at shadow.nd.rl.ac.uk>> wrote:


Dear all,


I have a question regarding the *Automated weight optimization* function.
Two questions:
1. How does it calculate the residual for each data set? And how is the
global weight rescaling
parameter T chosen?


2. How does the total residual come into the fitting? I understand that RMC
works on a chi minimization procedure, so Ido not understand how the *
Automated weight optimization* would affect the final fitting.


Thank you for the help.


Kind regards,
Tom.
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