Search Results for author: Pu Ren

Found 13 papers, 4 papers with code

Reasoning-Enhanced Object-Centric Learning for Videos

no code implementations22 Mar 2024 Jian Li, Pu Ren, Yang Liu, Hao Sun

Object-centric learning aims to break down complex visual scenes into more manageable object representations, enhancing the understanding and reasoning abilities of machine learning systems toward the physical world.

Object Object Tracking

Physics-Informed Machine Learning for Seismic Response Prediction OF Nonlinear Steel Moment Resisting Frame Structures

no code implementations28 Feb 2024 R. Bailey Bond, Pu Ren, Jerome F. Hajjar, Hao Sun

There is growing interest in using machine learning (ML) methods for structural metamodeling due to the substantial computational cost of traditional simulations.

Dimensionality Reduction Physics-informed machine learning

Data-Efficient Operator Learning via Unsupervised Pretraining and In-Context Learning

no code implementations24 Feb 2024 Wuyang Chen, Jialin Song, Pu Ren, Shashank Subramanian, Dmitriy Morozov, Michael W. Mahoney

To reduce the need for training data with simulated solutions, we pretrain neural operators on unlabeled PDE data using reconstruction-based proxy tasks.

In-Context Learning Operator learning

Generative Modeling of Regular and Irregular Time Series Data via Koopman VAEs

no code implementations4 Oct 2023 Ilan Naiman, N. Benjamin Erichson, Pu Ren, Michael W. Mahoney, Omri Azencot

In this work, we introduce Koopman VAE (KVAE), a new generative framework that is based on a novel design for the model prior, and that can be optimized for either regular and irregular training data.

Irregular Time Series Time Series +1

SuperBench: A Super-Resolution Benchmark Dataset for Scientific Machine Learning

1 code implementation24 Jun 2023 Pu Ren, N. Benjamin Erichson, Shashank Subramanian, Omer San, Zarija Lukic, Michael W. Mahoney

Super-Resolution (SR) techniques aim to enhance data resolution, enabling the retrieval of finer details, and improving the overall quality and fidelity of the data representation.

Retrieval Super-Resolution

Physics-informed neural network for seismic wave inversion in layered semi-infinite domain

no code implementations9 May 2023 Pu Ren, Chengping Rao, Hao Sun, Yang Liu

In this paper, we present a PINN framework for seismic wave inversion in layered (1D) semi-infinite domain.

Seismic Inversion

An Unsupervised Machine Learning Approach for Ground-Motion Spectra Clustering and Selection

no code implementations6 Dec 2022 R. Bailey Bond, Pu Ren, Jerome F. Hajjar, Hao Sun

Clustering analysis of sequence data continues to address many applications in engineering design, aided with the rapid growth of machine learning in applied science.

Clustering

SeismicNet: Physics-informed neural networks for seismic wave modeling in semi-infinite domain

no code implementations25 Oct 2022 Pu Ren, Chengping Rao, Su Chen, Jian-Xun Wang, Hao Sun, Yang Liu

In this paper, we present a novel physics-informed neural network (PINN) model for seismic wave modeling in semi-infinite domain without the nedd of labeled data.

Computational Efficiency

Physics-informed Deep Super-resolution for Spatiotemporal Data

1 code implementation2 Aug 2022 Pu Ren, Chengping Rao, Yang Liu, Zihan Ma, Qi Wang, Jian-Xun Wang, Hao Sun

High-fidelity simulation of complex physical systems is exorbitantly expensive and inaccessible across spatiotemporal scales.

Super-Resolution

Discovering Nonlinear PDEs from Scarce Data with Physics-encoded Learning

no code implementations ICLR 2022 Chengping Rao, Pu Ren, Yang Liu, Hao Sun

There have been growing interests in leveraging experimental measurements to discover the underlying partial differential equations (PDEs) that govern complex physical phenomena.

PhyCRNet: Physics-informed Convolutional-Recurrent Network for Solving Spatiotemporal PDEs

2 code implementations26 Jun 2021 Pu Ren, Chengping Rao, Yang Liu, JianXun Wang, Hao Sun

Partial differential equations (PDEs) play a fundamental role in modeling and simulating problems across a wide range of disciplines.

Encoding physics to learn reaction-diffusion processes

2 code implementations9 Jun 2021 Chengping Rao, Pu Ren, Qi Wang, Oral Buyukozturk, Hao Sun, Yang Liu

Modeling complex spatiotemporal dynamical systems, such as the reaction-diffusion processes, have largely relied on partial differential equations (PDEs).

Epidemiology

Incremental Bayesian tensor learning for structural monitoring data imputation and response forecasting

no code implementations1 Jul 2020 Pu Ren, Xinyu Chen, Lijun Sun, Hao Sun

To address this fundamental issue, this paper presents an incremental Bayesian tensor learning method for reconstruction of spatiotemporal missing data in SHM and forecasting of structural response.

Imputation Incremental Learning +1

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