
Arvind Ramanathan (he/him)
282 posts

Arvind Ramanathan (he/him)
@arvindr_
Pasta and Protein. Music and Mysteries. Life and Lessons. Computational biologist- sometimes at work :)






@francesarnold Arvind talking about generative models and agents for biology










Unsupervised learning of progress coordinates during weighted ensemble simulations: Application to millisecond protein folding - Improve rare events in protein folding (e.g., state transitions) through weighted ensemble simulation and an unsupervised deep learning model. - Use a convolutional VAE to compress contact maps into latent space, and applies a Local Outlier Factor to identify outlier conformations, which are then replicated in the simulation. - Training the CVAE on-the-fly works better than using a pretrained model. Preprint: biorxiv.org/content/10.110…

Unsupervised learning of progress coordinates during weighted ensemble simulations: Application to millisecond protein folding - Improve rare events in protein folding (e.g., state transitions) through weighted ensemble simulation and an unsupervised deep learning model. - Use a convolutional VAE to compress contact maps into latent space, and applies a Local Outlier Factor to identify outlier conformations, which are then replicated in the simulation. - Training the CVAE on-the-fly works better than using a pretrained model. Preprint: biorxiv.org/content/10.110…

How do we capture local features across multiple resolutions? While standard convolutional layers work only on a fixed input-resolution, we design local neural operators that learn integral and differential kernels, and are principled ways to extend standard convolutions to varying resolutions and grids. Layers of such local neural operators can be combined with global neural operators such as Fourier neural operators (FNO) to provide rich expressive architectures for learning PDEs. We show improved performance on many PDEs such as Darcy flow, turbulent fluid flow and spherical shallow water equations. arxiv.org/abs/2402.16845 @julberner @Azizzadenesheli


