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# ML FF IREG MB

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ML_FF_IREG_MB = [integer]
Default: ML_FF_IREG_MB = 2

Description: This tag specifies whether the regularization parameters are kept constant or not in the machine learning force field method.

The following cases are possible for this tag:

For the optimization of the noise parameter ${\displaystyle \sigma _{{{\mathrm {v}}}}^{{2}}}$ see following section: Machine learning force fields: Theory.