2020-04-30 Force Field Release meeting notes

Date

Apr 30, 2020

Participants

  • @Hyesu Jang

  • @David Mobley

  • @Christopher Bayly

  • @Lee-Ping Wang

  • @Jessica Maat (Deactivated)

  • @Simon Boothroyd

  • @Jeffrey Wagner

Goals

  • Current fitting status update

Discussion topics

Item

Presenter

Notes

Item

Presenter

Notes

Current fitting status and rough EDD of v1.2.0 release

Slides:

 

@Hyesu Jang

Higher priorities

  • Phosphate geometries are hard. The angle constants are probably too weak in FFs like GAFF. We should check those

  • LPW + CIB -- Histograms might be more informative if we use a logarithmic y axis (to investigate tails of the distributions)

  • DM – could show plot both with and without log scale on y axis

Later after May meeting

  • CIB – Is there some way to make relative energies a”local” measure? Like, for some set of conformers in a molecule, we look at all of the inter-conformer relative energies. Then relative energies of conformers could be a sum of differences between that conformer and all conformers in the molecule. This would remove some o the sensitivity caused by choice of reference conformer. Note added by CIB: one could also include preferential weighting of lower-QM-energy conformers, a (good) implicit bias of the reference conformers we have been using so far.

  • LPW + DM – That would be a good comparison to run after the May meeting.