Search Results for author: James Koch

Found 5 papers, 0 papers with code

Neural Differential Algebraic Equations

no code implementations19 Mar 2024 James Koch, Madelyn Shapiro, Himanshu Sharma, Draguna Vrabie, Jan Drgona

In this work, we show that the proposed NDAEs abstraction is suitable for relevant system-theoretic data-driven modeling tasks.

Neural Lumped Parameter Differential Equations with Application in Friction-Stir Processing

no code implementations18 Apr 2023 James Koch, Woongjo Choi, Ethan King, David Garcia, Hrishikesh Das, Tianhao Wang, Ken Ross, Keerti Kappagantula

Lumped parameter methods aim to simplify the evolution of spatially-extended or continuous physical systems to that of a "lumped" element representative of the physical scales of the modeled system.

Friction

Physics-informed Machine Learning of Parameterized Fundamental Diagrams

no code implementations1 Aug 2022 James Koch, Thomas Maxner, Vinay Amatya, Andisheh Ranjbari, Chase Dowling

For simulated data, we generalize this relationship by introducing contextual information at the learning stage, i. e. vehicle composition, driver behavior, curb zoning configuration, etc, and show how the speed-flow relationship changes as a function of these exogenous factors independent of roadway design.

BIG-bench Machine Learning Physics-informed machine learning

Structural Inference of Networked Dynamical Systems with Universal Differential Equations

no code implementations11 Jul 2022 James Koch, Zhao Chen, Aaron Tuor, Jan Drgona, Draguna Vrabie

Networked dynamical systems are common throughout science in engineering; e. g., biological networks, reaction networks, power systems, and the like.

Data-Driven Modeling of Nonlinear Traveling Waves

no code implementations6 Jan 2021 James Koch

Although traveling waves are readily observed in many physical systems, the underlying governing equations may be unknown.

Fluid Dynamics Dynamical Systems Pattern Formation and Solitons Computational Physics

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