Search Results for author: Rui Gao

Found 30 papers, 3 papers with code

Non-Convex Robust Hypothesis Testing using Sinkhorn Uncertainty Sets

no code implementations21 Mar 2024 Jie Wang, Rui Gao, Yao Xie

We present a new framework to address the non-convex robust hypothesis testing problem, wherein the goal is to seek the optimal detector that minimizes the maximum of worst-case type-I and type-II risk functions.

Computational Efficiency

Sentinel-Guided Zero-Shot Learning: A Collaborative Paradigm without Real Data Exposure

no code implementations14 Mar 2024 Fan Wan, Xingyu Miao, Haoran Duan, Jingjing Deng, Rui Gao, Yang Long

With increasing concerns over data privacy and model copyrights, especially in the context of collaborations between AI service providers and data owners, an innovative SG-ZSL paradigm is proposed in this work.

Zero-Shot Learning

Point cloud-based registration and image fusion between cardiac SPECT MPI and CTA

no code implementations10 Feb 2024 Shaojie Tang, Penpen Miao, Xingyu Gao, Yu Zhong, Dantong Zhu, Haixing Wen, Zhihui Xu, Qiuyue Wei, Hongping Yao, Xin Huang, Rui Gao, Chen Zhao, Weihua Zhou

Fourthly, we employed ICP, SICP or CPD algorithm to achieve a fine registration for the point clouds (together with the special points of APIGs) of the LV epicardial surfaces (LVERs) in SPECT and CTA images.

Anatomy

Timed-Elastic-Band Based Variable Splitting for Autonomous Trajectory Planning

no code implementations5 Feb 2024 Hao Zhu, Kefan Jin, Rui Gao, Jialin Wang, C. -J. Richard Shi

Existing trajectory planning methods are struggling to handle the issue of autonomous track swinging during navigation, resulting in significant errors when reaching the destination.

Collision Avoidance Trajectory Planning

A Finite Element-Inspired Hypergraph Neural Network: Application to Fluid Dynamics Simulations

1 code implementation30 Dec 2022 Rui Gao, Indu Kant Deo, Rajeev K. Jaiman

We term this method a finite element-inspired hypergraph neural network, in short FEIH($\phi$)-GNN.

Combined space-time reduced-order model with 3D deep convolution for extrapolating fluid dynamics

no code implementations1 Nov 2022 Indu Kant Deo, Rui Gao, Rajeev Jaiman

To alleviate these errors, we propose a novel technique for learning coupled spatial-temporal correlation using a 3D convolution network.

Predicting fluid-structure interaction with graph neural networks

no code implementations9 Oct 2022 Rui Gao, Rajeev K. Jaiman

The structural state is implicitly modeled by the movement of the mesh on the solid-fluid interface; hence it makes the proposed framework quasi-monolithic.

A Simple and General Duality Proof for Wasserstein Distributionally Robust Optimization

no code implementations30 Apr 2022 Luhao Zhang, Jincheng Yang, Rui Gao

We present an elementary yet general proof of duality for Wasserstein distributionally robust optimization.

SSGCNet: A Sparse Spectra Graph Convolutional Network for Epileptic EEG Signal Classification

no code implementations24 Mar 2022 Jialin Wang, Rui Gao, Haotian Zheng, Hao Zhu, C. -J. Richard Shi

Compared with the existing literature, our WNFG of EEG signals achieves up to 10 times of redundant edge reduction, and our approach achieves up to 97 times of model pruning without loss of classification accuracy.

Classification EEG

Absolute Zero-Shot Learning

no code implementations23 Feb 2022 Rui Gao, Fan Wan, Daniel Organisciak, Jiyao Pu, Junyan Wang, Haoran Duan, Peng Zhang, Xingsong Hou, Yang Long

Considering the increasing concerns about data copyright and privacy issues, we present a novel Absolute Zero-Shot Learning (AZSL) paradigm, i. e., training a classifier with zero real data.

Transfer Learning Zero-Shot Learning

Phase-SLAM: Phase Based Simultaneous Localization and Mapping for Mobile Structured Light Illumination Systems

1 code implementation22 Jan 2022 Xi Zheng, Rui Ma, Rui Gao, Qi Hao

In this paper, we propose a phase based Simultaneous Localization and Mapping (Phase-SLAM) framework for fast and accurate SLI sensor pose estimation and 3D object reconstruction.

3D Object Reconstruction 3D Reconstruction +4

Generalization Bounds for (Wasserstein) Robust Optimization

no code implementations NeurIPS 2021 Yang An, Rui Gao

(Distributionally) robust optimization has gained momentum in machine learning community recently, due to its promising applications in developing generalizable learning paradigms.

Generalization Bounds

Sinkhorn Distributionally Robust Optimization

1 code implementation24 Sep 2021 Jie Wang, Rui Gao, Yao Xie

We study distributionally robust optimization (DRO) with Sinkhorn distance -- a variant of Wasserstein distance based on entropic regularization.

Hierarchical Non-Stationary Temporal Gaussian Processes With $L^1$-Regularization

no code implementations20 May 2021 Zheng Zhao, Rui Gao, Simo Särkkä

This paper is concerned with regularized extensions of hierarchical non-stationary temporal Gaussian processes (NSGPs) in which the parameters (e. g., length-scale) are modeled as GPs.

Gaussian Processes regression

Mutual Calibration between Explicit and Implicit Deep Generative Models

no code implementations1 Jan 2021 Qitian Wu, Rui Gao, Hongyuan Zha

Deep generative models are generally categorized into explicit models and implicit models.

Reliable Off-policy Evaluation for Reinforcement Learning

no code implementations8 Nov 2020 Jie Wang, Rui Gao, Hongyuan Zha

In a sequential decision-making problem, off-policy evaluation estimates the expected cumulative reward of a target policy using logged trajectory data generated from a different behavior policy, without execution of the target policy.

Decision Making Off-policy evaluation +1

Two-sample Test using Projected Wasserstein Distance

no code implementations22 Oct 2020 Jie Wang, Rui Gao, Yao Xie

We develop a projected Wasserstein distance for the two-sample test, a fundamental problem in statistics and machine learning: given two sets of samples, to determine whether they are from the same distribution.

Finite-Sample Guarantees for Wasserstein Distributionally Robust Optimization: Breaking the Curse of Dimensionality

no code implementations9 Sep 2020 Rui Gao

In this paper, we develop a non-asymptotic framework for analyzing the out-of-sample performance for Wasserstein robust learning and the generalization bound for its related Lipschitz and gradient regularization problems.

Distributionally Robust Weighted $k$-Nearest Neighbors

no code implementations7 Jun 2020 Shixiang Zhu, Liyan Xie, Minghe Zhang, Rui Gao, Yao Xie

When the samples are limited, robustness is especially crucial to ensure the generalization capability of the classifier.

Few-Shot Learning General Classification +1

Bridging Explicit and Implicit Deep Generative Models via Neural Stein Estimators

no code implementations NeurIPS 2021 Qitian Wu, Rui Gao, Hongyuan Zha

To take full advantages of both models and enable mutual compensation, we propose a novel joint training framework that bridges an explicit (unnormalized) density estimator and an implicit sample generator via Stein discrepancy.

Stein Bridging: Enabling Mutual Reinforcement between Explicit and Implicit Generative Models

no code implementations25 Sep 2019 Qitian Wu, Rui Gao, Hongyuan Zha

Deep generative models are generally categorized into explicit models and implicit models.

Robust Hypothesis Testing Using Wasserstein Uncertainty Sets

no code implementations NeurIPS 2018 Rui Gao, Liyan Xie, Yao Xie, Huan Xu

We develop a novel computationally efficient and general framework for robust hypothesis testing.

Two-sample testing

Wasserstein Distributionally Robust Optimization and Variation Regularization

no code implementations17 Dec 2017 Rui Gao, Xi Chen, Anton J. Kleywegt

Wasserstein distributionally robust optimization (DRO) has recently achieved empirical success for various applications in operations research and machine learning, owing partly to its regularization effect.

Stochastic Optimization

Image Fusion With Cosparse Analysis Operator

no code implementations18 Apr 2017 Rui Gao, Sergiy A. Vorobyov, Hong Zhao

In our approach, we formulate the multi-focus image fusion problem in terms of an analysis sparse model, and simultaneously perform the restoration and fusion of multi-focus images.

Operator learning

Multi-ary Pulse Amplitude Modulated Signal Processing Using Bistable Stochastic Resonance

no code implementations International Conference on Noise and Fluctuations (ICNF) 2015 Jin Liu, Zan Li, Rui Gao, Jun Bai, Linlin Liang

On this basis, the mechanism of the BSR system response to MPAM signal inputs is elucidated, and a corresponding decoding scheme is proposed.

Sensing Subjective Well-being from Social Media

no code implementations15 Mar 2014 Bibo Hao, Lin Li, Rui Gao, Ang Li, Tingshao Zhu

Nowadays, people are motivated to share their experiences and feelings on social media, so we propose to sense SWB from the vast user generated data on social media.

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