Papers › 3D molecule generation by denoising voxel grids

3D molecule generation by denoising voxel grids

13 Jun 2023NeurIPS 2023 11arXiv:2306.07473archive 2025-07-28

Pedro O. Pinheiro, Joshua Rackers, Joseph Kleinhenz, Michael Maser, Omar Mahmood, Andrew Martin Watkins, Stephen Ra, Vishnu Sresht, Saeed Saremi

We propose a new score-based approach to generate 3D molecules represented as atomic densities on regular grids. First, we train a denoising neural network that learns to map from a smooth distribution of noisy molecules to the distribution of real molecules. Then, we follow the neural empirical Bayes framework (Saremi and Hyvarinen, 19) and generate molecules in two steps: (i) sample noisy density grids from a smooth distribution via underdamped Langevin Markov chain Monte Carlo, and (ii) recover the "clean" molecule by denoising the noisy grid with a single step. Our method, VoxMol, generates molecules in a fundamentally different way than the current state of the art (ie, diffusion models applied to atom point clouds). It differs in terms of the data representation, the noise model, the network architecture and the generative modeling algorithm. Our experiments show that VoxMol captures the distribution of drug-like molecules better than state of the art, while being faster to generate samples.

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find_peaks genentech/voxmol/voxmol/voxelizer.py official repository unverified Apache-2.0 (permissive) · 37dbe6d6f6772444 · report
get_atom_coords genentech/voxmol/voxmol/voxelizer.py official repository unverified Apache-2.0 (permissive) · e91866c57d3c4dca · report
load_checkpoint genentech/voxmol/voxmol/utils.py official repository unverified Apache-2.0 (permissive) · 2c47b4a14850f82b · report
load_pickle genentech/voxmol/voxmol/dataset/create_data_qm9.py official repository unverified Apache-2.0 (permissive) · ffadbd4b08e7061c · report
local_maxima genentech/voxmol/voxmol/voxelizer.py official repository unverified Apache-2.0 (permissive) · ec469335e0ea31ac · report
mol2xyz genentech/voxmol/voxmol/utils.py official repository unverified Apache-2.0 (permissive) · 9d50ac5b01630d64 · report
remove_atoms_too_close genentech/voxmol/voxmol/utils.py official repository unverified Apache-2.0 (permissive) · 60fe05b5dd0069ef · report

Tasks

3D Molecule GenerationDenoising

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Diffusion

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