Search Results for author: Javier E. Santos

Found 6 papers, 1 papers with code

Reconstruction of Fields from Sparse Sensing: Differentiable Sensor Placement Enhances Generalization

no code implementations14 Dec 2023 Agnese Marcato, Daniel O'Malley, Hari Viswanathan, Eric Guiltinan, Javier E. Santos

Recreating complex, high-dimensional global fields from limited data points is a grand challenge across various scientific and industrial domains.

Using Ornstein-Uhlenbeck Process to understand Denoising Diffusion Probabilistic Model and its Noise Schedules

no code implementations29 Nov 2023 Javier E. Santos, Yen Ting Lin

The aim of this short note is to show that Denoising Diffusion Probabilistic Model DDPM, a non-homogeneous discrete-time Markov process, can be represented by a time-homogeneous continuous-time Markov process observed at non-uniformly sampled discrete times.

Denoising

Mitigation of Spatial Nonstationarity with Vision Transformers

no code implementations9 Dec 2022 Lei Liu, Javier E. Santos, Maša Prodanović, Michael J. Pyrcz

However, there is a paucity of demonstrated best practice and general guidance on mitigation of spatial nonstationarity with deep learning in the geospatial context.

Predictive Scale-Bridging Simulations through Active Learning

no code implementations20 Sep 2022 Satish Karra, Mohamed Mehana, Nicholas Lubbers, Yu Chen, Abdourahmane Diaw, Javier E. Santos, Aleksandra Pachalieva, Robert S. Pavel, Jeffrey R. Haack, Michael McKerns, Christoph Junghans, Qinjun Kang, Daniel Livescu, Timothy C. Germann, Hari S. Viswanathan

Throughout computational science, there is a growing need to utilize the continual improvements in raw computational horsepower to achieve greater physical fidelity through scale-bridging over brute-force increases in the number of mesh elements.

Active Learning

MudrockNet: Semantic Segmentation of Mudrock SEM Images through Deep Learning

1 code implementation5 Feb 2021 Abhishek Bihani, Hugh Daigle, Javier E. Santos, Christopher Landry, Masa Prodanovic, Kitty Milliken

Segmentation and analysis of individual pores and grains of mudrocks from scanning electron microscope images is non-trivial because of noise, imaging artifacts, variation in pixel grayscale values across images, and overlaps in grayscale values among different physical features such as silt grains, clay grains, and pores in an image, which make their identification difficult.

Image Segmentation Segmentation +1

Modeling nanoconfinement effects using active learning

no code implementations6 May 2020 Javier E. Santos, Mohammed Mehana, Hao Wu, Masa Prodanovic, Michael J. Pyrcz, Qinjun Kang, Nicholas Lubbers, Hari Viswanathan

At this scale, the fluid properties are affected by nanoconfinement effects due to the increased fluid-solid interactions.

Active Learning

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