Search Results for author: Ulisses Braga-Neto

Found 15 papers, 4 papers with code

Characteristics-Informed Neural Networks for Forward and Inverse Hyperbolic Problems

no code implementations28 Dec 2022 Ulisses Braga-Neto

This paper focuses on linear transport phenomena, in which case it is shown that, if the characteristic ODEs can be solved exactly, then the output of a CINN is an exact solution of the PDE, even at initialization, preventing the occurrence of non-physical solutions.

Computer Vision for Volunteer Cotton Detection in a Corn Field with UAS Remote Sensing Imagery and Spot Spray Applications

no code implementations15 Jul 2022 Pappu Kumar Yadav, J. Alex Thomasson, Stephen W. Searcy, Robert G. Hardin, Ulisses Braga-Neto, Sorin C. Popescu, Daniel E. Martin, Roberto Rodriguez, Karem Meza, Juan Enciso, Jorge Solorzano Diaz, Tianyi Wang

To control boll weevil (Anthonomus grandis L.) pest re-infestation in cotton fields, the current practices of volunteer cotton (VC) (Gossypium hirsutum L.) plant detection in fields of rotation crops like corn (Zea mays L.) and sorghum (Sorghum bicolor L.) involve manual field scouting at the edges of fields.

Management

Detecting Volunteer Cotton Plants in a Corn Field with Deep Learning on UAV Remote-Sensing Imagery

no code implementations14 Jul 2022 Pappu Kumar Yadav, J. Alex Thomasson, Robert Hardin, Stephen W. Searcy, Ulisses Braga-Neto, Sorin C. Popescu, Daniel E. Martin, Roberto Rodriguez, Karem Meza, Juan Enciso, Jorge Solorzano Diaz, Tianyi Wang

The two-fold objectives of this paper were : (i) to determine whether YOLOv3 can be used for VC detection in a corn field using RGB (red, green, and blue) aerial images collected by UAS and (ii) to investigate the behavior of YOLOv3 on images at three different scales (320 x 320, S1; 416 x 416, S2; and 512 x 512, S3 pixels) based on average precision (AP), mean average precision (mAP) and F1-score at 95% confidence level.

Auto-PINN: Understanding and Optimizing Physics-Informed Neural Architecture

no code implementations27 May 2022 Yicheng Wang, Xiaotian Han, Chia-Yuan Chang, Daochen Zha, Ulisses Braga-Neto, Xia Hu

Physics-informed neural networks (PINNs) are revolutionizing science and engineering practice by bringing together the power of deep learning to bear on scientific computation.

Hyperparameter Optimization Neural Architecture Search

PSO-PINN: Physics-Informed Neural Networks Trained with Particle Swarm Optimization

no code implementations4 Feb 2022 Caio Davi, Ulisses Braga-Neto

In this paper, we propose the use of a particle swarm optimization (PSO) approach to train PINNs.

Generalized Resubstitution for Classification Error Estimation

no code implementations23 Oct 2021 Parisa Ghane, Ulisses Braga-Neto

In the two-class case, we show that a generalized resubstitution estimator is consistent and asymptotically unbiased, regardless of the distribution of the features and label, if the corresponding generalized empirical measure converges uniformly to the standard empirical measure and the classification rule has a finite VC dimension.

Classification Image Classification

A stochastic metapopulation state-space approach to modeling and estimating Covid-19 spread

no code implementations15 Jun 2021 Yukun Tan, Durward Cator III, Martial Ndeffo-Mbah, Ulisses Braga-Neto

Mathematical models are widely recognized as an important tool for analyzing and understanding the dynamics of infectious disease outbreaks, predict their future trends, and evaluate public health intervention measures for disease control and elimination.

Metaheuristic Optimization Time Series +1

Self-Adaptive Physics-Informed Neural Networks using a Soft Attention Mechanism

2 code implementations7 Sep 2020 Levi McClenny, Ulisses Braga-Neto

Physics-Informed Neural Networks (PINNs) have emerged recently as a promising application of deep neural networks to the numerical solution of nonlinear partial differential equations (PDEs).

A Semi-Supervised Generative Adversarial Network for Prediction of Genetic Disease Outcomes

1 code implementation2 Jul 2020 Caio Davi, Ulisses Braga-Neto

To address this, we introduce genetic Generative Adversarial Networks (gGAN), a semi-supervised approach based on an innovative GAN architecture to create large synthetic genetic data sets starting with a small amount of labeled data and a large amount of unlabeled data.

Generative Adversarial Network

Deep Multimodal Transfer-Learned Regression in Data-Poor Domains

1 code implementation16 Jun 2020 Levi McClenny, Mulugeta Haile, Vahid Attari, Brian Sadler, Ulisses Braga-Neto, Raymundo Arroyave

In many real-world applications of deep learning, estimation of a target may rely on various types of input data modes, such as audio-video, image-text, etc.

Multi-target regression regression

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