no code implementations • 26 Jun 2020 • Johannes Hoja, Leonardo Medrano Sandonas, Brian G. Ernst, Alvaro Vazquez-Mayagoitia, Robert A. DiStasio Jr., Alexandre Tkatchenko
We introduce QM7-X, a comprehensive dataset of 42 physicochemical properties for $\approx$ 4. 2 M equilibrium and non-equilibrium structures of small organic molecules with up to seven non-hydrogen (C, N, O, S, Cl) atoms.
Chemical Physics
1 code implementation • 27 Mar 2020 • Max Veit, David M. Wilkins, Yang Yang, Robert A. DiStasio Jr., Michele Ceriotti
In this work, we choose to represent this quantity with a physically inspired ML model that captures two distinct physical effects: local atomic polarization is captured within the symmetry-adapted Gaussian process regression (SA-GPR) framework, which assigns a (vector) dipole moment to each atom, while movement of charge across the entire molecule is captured by assigning a partial (scalar) charge to each atom.
no code implementations • 16 Oct 2017 • Tristan Bereau, Robert A. DiStasio Jr., Alexandre Tkatchenko, O. Anatole von Lilienfeld
Unlike other potentials, this model is transferable in its ability to handle new molecules and conformations without explicit prior parametrization: All local atomic properties are predicted from ML, leaving only eight global parameters---optimized once and for all across compounds.
Chemical Physics