Search Results for author: Nesar Ramachandra

Found 8 papers, 2 papers with code

Application of probabilistic modeling and automated machine learning framework for high-dimensional stress field

no code implementations15 Mar 2023 Lele Luan, Nesar Ramachandra, Sandipp Krishnan Ravi, Anindya Bhaduri, Piyush Pandita, Prasanna Balaprakash, Mihai Anitescu, Changjie Sun, Liping Wang

Modern computational methods, involving highly sophisticated mathematical formulations, enable several tasks like modeling complex physical phenomenon, predicting key properties and design optimization.

Uncertainty Quantification

Interpretable Uncertainty Quantification in AI for HEP

no code implementations5 Aug 2022 Thomas Y. Chen, Biprateep Dey, Aishik Ghosh, Michael Kagan, Brian Nord, Nesar Ramachandra

Estimating uncertainty is at the core of performing scientific measurements in HEP: a measurement is not useful without an estimate of its uncertainty.

Decision Making Uncertainty Quantification

Global field reconstruction from sparse sensors with Voronoi tessellation-assisted deep learning

1 code implementation3 Jan 2021 Kai Fukami, Romit Maulik, Nesar Ramachandra, Koji Fukagata, Kunihiko Taira

This reconstruction problem is especially difficult when sensors are sparsely positioned in a seemingly random or unorganized manner, which is often encountered in a range of scientific and engineering problems.

Super-Resolution

Peculiar Velocity Estimation from Kinetic SZ Effect using Deep Neural Networks

no code implementations8 Oct 2020 Yuyu Wang, Nesar Ramachandra, Edgar M. Salazar-Canizales, Hume A. Feldman, Richard Watkins, Klaus Dolag

The Sunyaev-Zel'dolvich (SZ) effect is expected to be instrumental in measuring velocities of distant clusters in near future telescope surveys.

Cosmology and Nongalactic Astrophysics

Beyond the Hubble Sequence -- Exploring Galaxy Morphology with Unsupervised Machine Learning

no code implementations24 Sep 2020 Ting-Yun Cheng, Marc Huertas-Company, Christopher J. Conselice, Alfonso Aragón-Salamanca, Brant E. Robertson, Nesar Ramachandra

Based on this, the main result in this work is how well our unsupervised method matches visual classifications and physical properties, as well as providing an independent classification that is more physically meaningful than any visually based ones.

Astrophysics of Galaxies

Latent-space time evolution of non-intrusive reduced-order models using Gaussian process emulation

no code implementations23 Jul 2020 Romit Maulik, Themistoklis Botsas, Nesar Ramachandra, Lachlan Robert Mason, Indranil Pan

We assess the viability of this algorithm for an advection-dominated system given by the inviscid shallow water equations.

Probabilistic neural networks for fluid flow surrogate modeling and data recovery

1 code implementation8 May 2020 Romit Maulik, Kai Fukami, Nesar Ramachandra, Koji Fukagata, Kunihiko Taira

We consider the use of probabilistic neural networks for fluid flow surrogate modeling and data recovery.

Fluid Dynamics

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