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- W4244846477 abstract "<p>Partial atomic charge assignment is of immense practical value to force field parametrization, molecular docking, and cheminformatics. Machine learning has emerged as a powerful tool for modeling chemistry at unprecedented computational speeds given ground-truth values, but for the task of charge assignment, the choice of ground-truth may not be obvious. In this letter, we use machine learning to discover a charge model by training a neural network to molecular dipole moments using a large, diverse set of CHNO molecular conformations. The new model, called Affordable Charge Assignment (ACA), is computationally inexpensive and predicts dipoles of out-of-sample molecules accurately. Furthermore, dipole-inferred ACA charges are transferable to dipole and even quadrupole moments of much larger molecules than those used for training. We apply ACA to long dynamical trajectories of biomolecules and successfully produce their infrared spectra. Additionally, we compare ACA with existing charge models and find that ACA assigns similar charges to Charge Model 5, but with a greatly reduced computational cost.</p>" @default.
- W4244846477 created "2022-05-12" @default.
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- W4244846477 date "2018-01-01" @default.
- W4244846477 modified "2023-09-26" @default.
- W4244846477 title "Discovering a Transferable Charge Assignment Model Using Machine Learning" @default.
- W4244846477 doi "https://doi.org/10.26434/chemrxiv.6638981.v1" @default.
- W4244846477 hasPublicationYear "2018" @default.
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