Search Results for author: Andrew L. Ferguson

Found 10 papers, 3 papers with code

Permutationally Invariant Networks for Enhanced Sampling (PINES): Discovery of Multi-Molecular and Solvent-Inclusive Collective Variables

1 code implementation16 Aug 2023 Nicholas S. M. Herringer, Siva Dasetty, Diya Gandhi, Junhee Lee, Andrew L. Ferguson

Of these, permutational invariance have proved a persistent challenge in frustrating the the data-driven discovery of multi-molecular CVs in systems of self-assembling particles and solvent-inclusive CVs for solvated systems.

Translation

DiAMoNDBack: Diffusion-denoising Autoregressive Model for Non-Deterministic Backmapping of Cα Protein Traces

1 code implementation23 Jul 2023 Michael S. Jones, Kirill Shmilovich, Andrew L. Ferguson

The autoregressive generation process proceeds from the protein N-terminus to C-terminus in a residue-by-residue fashion conditioned on the C{\alpha} trace and previously backmapped backbone and side chain atoms within the local neighborhood.

Denoising

GANs and Closures: Micro-Macro Consistency in Multiscale Modeling

no code implementations23 Aug 2022 Ellis R. Crabtree, Juan M. Bello-Rivas, Andrew L. Ferguson, Ioannis G. Kevrekidis

In this work, we present an approach that couples physics-based simulations and biasing methods for sampling conditional distributions with ML-based conditional generative adversarial networks for the same task.

Dimensionality Reduction Protein Folding

Molecular Latent Space Simulators

no code implementations1 Jul 2020 Hythem Sidky, Wei Chen, Andrew L. Ferguson

Small integration time steps limit molecular dynamics (MD) simulations to millisecond time scales.

High-resolution Markov state models for the dynamics of Trp-cage miniprotein constructed over slow folding modes identified by state-free reversible VAMPnets

no code implementations12 Jun 2019 Hythem Sidky, Wei Chen, Andrew L. Ferguson

State-free reversible VAMPnets (SRVs) are a neural network-based framework capable of learning the leading eigenfunctions of the transfer operator of a dynamical system from trajectory data.

Capabilities and Limitations of Time-lagged Autoencoders for Slow Mode Discovery in Dynamical Systems

no code implementations2 Jun 2019 Wei Chen, Hythem Sidky, Andrew L. Ferguson

We also compare the TAE results with those obtained using state-free reversible VAMPnets (SRVs) as a variational-based neural network approach for slow modes discovery, and show that SRVs can correctly discover slow modes where TAEs fail.

Nonlinear Discovery of Slow Molecular Modes using State-Free Reversible VAMPnets

no code implementations9 Feb 2019 Wei Chen, Hythem Sidky, Andrew L. Ferguson

The success of enhanced sampling molecular simulations that accelerate along collective variables (CVs) is predicated on the availability of variables coincident with the slow collective motions governing the long-time conformational dynamics of a system.

Molecular enhanced sampling with autoencoders: On-the-fly collective variable discovery and accelerated free energy landscape exploration

no code implementations30 Dec 2017 Wei Chen, Andrew L. Ferguson

Nonlinear machine learning techniques can identify such CVs but typically do not furnish an explicit relationship with the atomic coordinates necessary to perform biased sampling.

Landmark Diffusion Maps (L-dMaps): Accelerated manifold learning out-of-sample extension

no code implementations28 Jun 2017 Andrew W. Long, Andrew L. Ferguson

Diffusion maps are a nonlinear manifold learning technique based on harmonic analysis of a diffusion process over the data.

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