Search Results for author: Chris Rackauckas

Found 13 papers, 7 papers with code

A Practitioner's Guide to Bayesian Inference in Pharmacometrics using Pumas

no code implementations31 Mar 2023 Mohamed Tarek, Jose Storopoli, Casey Davis, Chris Elrod, Julius Krumbiegel, Chris Rackauckas, Vijay Ivaturi

Many of the algorithms, codes, and ideas presented in this paper are highly applicable to clinical research and statistical learning at large but we chose to focus our discussions on pharmacometrics in this paper to have a narrower scope in mind and given the nature of Pumas as a software primarily for pharmacometricians.

Bayesian Inference

Efficient hybrid modeling and sorption model discovery for non-linear advection-diffusion-sorption systems: A systematic scientific machine learning approach

1 code implementation22 Mar 2023 Vinicius V. Santana, Erbet Costa, Carine M. Rebello, Ana Mafalda Ribeiro, Chris Rackauckas, Idelfonso B. R. Nogueira

The study successfully reconstructed sorption uptake kinetics using sparse and symbolic regression, and accurately predicted breakthrough curves using identified polynomials, highlighting the potential of the proposed framework for discovering sorption kinetic law structures.

Model Discovery regression +1

Locally Regularized Neural Differential Equations: Some Black Boxes Were Meant to Remain Closed!

1 code implementation3 Mar 2023 Avik Pal, Alan Edelman, Chris Rackauckas

Implicit layer deep learning techniques, like Neural Differential Equations, have become an important modeling framework due to their ability to adapt to new problems automatically.

Automatic Differentiation of Programs with Discrete Randomness

1 code implementation16 Oct 2022 Gaurav Arya, Moritz Schauer, Frank Schäfer, Chris Rackauckas

Automatic differentiation (AD), a technique for constructing new programs which compute the derivative of an original program, has become ubiquitous throughout scientific computing and deep learning due to the improved performance afforded by gradient-based optimization.

Physics-enhanced deep surrogates for partial differential equations

no code implementations10 Nov 2021 Raphaël Pestourie, Youssef Mroueh, Chris Rackauckas, Payel Das, Steven G. Johnson

Many physics and engineering applications demand Partial Differential Equations (PDE) property evaluations that are traditionally computed with resource-intensive high-fidelity numerical solvers.

Active Learning

AbstractDifferentiation.jl: Backend-Agnostic Differentiable Programming in Julia

1 code implementation25 Sep 2021 Frank Schäfer, Mohamed Tarek, Lyndon White, Chris Rackauckas

No single Automatic Differentiation (AD) system is the optimal choice for all problems.

Bayesian Neural Ordinary Differential Equations

no code implementations14 Dec 2020 Raj Dandekar, Karen Chung, Vaibhav Dixit, Mohamed Tarek, Aslan Garcia-Valadez, Krishna Vishal Vemula, Chris Rackauckas

We demonstrate the successful integration of Neural ODEs with the above Bayesian inference frameworks on classical physical systems, as well as on standard machine learning datasets like MNIST, using GPU acceleration.

Bayesian Inference BIG-bench Machine Learning +2

Accelerating Simulation of Stiff Nonlinear Systems using Continuous-Time Echo State Networks

no code implementations7 Oct 2020 Ranjan Anantharaman, Yingbo Ma, Shashi Gowda, Chris Laughman, Viral Shah, Alan Edelman, Chris Rackauckas

Modern design, control, and optimization often requires simulation of highly nonlinear models, leading to prohibitive computational costs.

The Koopman Expectation: An Operator Theoretic Method for Efficient Analysis and Optimization of Uncertain Hybrid Dynamical Systems

no code implementations20 Aug 2020 Adam R. Gerlach, Andrew Leonard, Jonathan Rogers, Chris Rackauckas

For dynamical systems involving decision making, the success of the system greatly depends on its ability to make good decisions with incomplete and uncertain information.

Dynamical Systems Optimization and Control Probability

A Differentiable Programming System to Bridge Machine Learning and Scientific Computing

2 code implementations17 Jul 2019 Mike Innes, Alan Edelman, Keno Fischer, Chris Rackauckas, Elliot Saba, Viral B. Shah, Will Tebbutt

Scientific computing is increasingly incorporating the advancements in machine learning and the ability to work with large amounts of data.

BIG-bench Machine Learning

DiffEqFlux.jl - A Julia Library for Neural Differential Equations

5 code implementations6 Feb 2019 Chris Rackauckas, Mike Innes, Yingbo Ma, Jesse Bettencourt, Lyndon White, Vaibhav Dixit

We show high-level functionality for defining neural ordinary differential equations (neural networks embedded into the differential equation) and describe the extra models in the Flux model zoo which includes neural stochastic differential equations.

BIG-bench Machine Learning

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