Search Results for author: Xiangyu Sun

Found 13 papers, 4 papers with code

Localized Physics-informed Gaussian Processes with Curriculum Training for Topology Optimization

no code implementations18 Mar 2025 Amin Yousefpour, Shirin Hosseinmardi, Xiangyu Sun, Ramin Bostanabad

We introduce a simultaneous and meshfree topology optimization (TO) framework based on physics-informed Gaussian processes (GPs).

Gaussian Processes

Fairness Analysis of CLIP-Based Foundation Models for X-Ray Image Classification

no code implementations31 Jan 2025 Xiangyu Sun, Xiaoguang Zou, Yuanquan Wu, Guotai Wang, Shaoting Zhang

X-ray imaging is pivotal in medical diagnostics, offering non-invasive insights into a range of health conditions.

Diagnostic Fairness +1

OVGaussian: Generalizable 3D Gaussian Segmentation with Open Vocabularies

no code implementations31 Dec 2024 Runnan Chen, Xiangyu Sun, Zhaoqing Wang, Youquan Liu, Jiepeng Wang, Lingdong Kong, Jiankang Deng, Mingming Gong, Liang Pan, Wenping Wang, Tongliang Liu

We first construct a large-scale 3D scene dataset based on 3DGS, dubbed \textbf{SegGaussian}, which provides detailed semantic and instance annotations for both Gaussian points and multi-view images.

3DGS 3D Semantic Segmentation +3

Generative Densification: Learning to Densify Gaussians for High-Fidelity Generalizable 3D Reconstruction

no code implementations9 Dec 2024 Seungtae Nam, Xiangyu Sun, Gyeongjin Kang, Younggeun Lee, Seungjun Oh, Eunbyung Park

Generalized feed-forward Gaussian models have achieved significant progress in sparse-view 3D reconstruction by leveraging prior knowledge from large multi-view datasets.

3D Reconstruction

Compact 3D Gaussian Splatting for Static and Dynamic Radiance Fields

1 code implementation7 Aug 2024 Joo Chan Lee, Daniel Rho, Xiangyu Sun, Jong Hwan Ko, Eunbyung Park

With model compression techniques such as quantization and entropy coding, we consistently show over 25x reduced storage and enhanced rendering speed compared to 3DGS for static scenes, while maintaining the quality of the scene representation.

3DGS Model Compression +1

Counterfactual Explanations for Multivariate Time-Series without Training Datasets

no code implementations28 May 2024 Xiangyu Sun, Raquel Aoki, Kevin H. Wilson

However, most existing CFE methods require access to the model's training dataset, few methods can handle multivariate time-series, and none can handle multivariate time-series without training datasets.

counterfactual Time Series

F-3DGS: Factorized Coordinates and Representations for 3D Gaussian Splatting

no code implementations27 May 2024 Xiangyu Sun, Joo Chan Lee, Daniel Rho, Jong Hwan Ko, Usman Ali, Eunbyung Park

To mitigate the storage overhead, we propose Factorized 3D Gaussian Splatting (F-3DGS), a novel approach that drastically reduces storage requirements while preserving image quality.

3DGS NeRF +1

Deblurring 3D Gaussian Splatting

no code implementations1 Jan 2024 Byeonghyeon Lee, Howoong Lee, Xiangyu Sun, Usman Ali, Eunbyung Park

However, it suffers from severe degradation in the rendering quality if the training images are blurry.

Deblurring Novel View Synthesis

Compact 3D Gaussian Representation for Radiance Field

1 code implementation CVPR 2024 Joo Chan Lee, Daniel Rho, Xiangyu Sun, Jong Hwan Ko, Eunbyung Park

On the other hand, 3D Gaussian splatting (3DGS) has recently emerged as an alternative representation that leverages a 3D Gaussisan-based representation and adopts the rasterization pipeline to render the images rather than volumetric rendering, achieving very fast rendering speed and promising image quality.

3DGS Model Compression +2

ChatPipe: Orchestrating Data Preparation Program by Optimizing Human-ChatGPT Interactions

no code implementations7 Apr 2023 Sibei Chen, Hanbing Liu, Weiting Jin, Xiangyu Sun, Xiaoyao Feng, Ju Fan, Xiaoyong Du, Nan Tang

Orchestrating a high-quality data preparation program is essential for successful machine learning (ML), but it is known to be time and effort consuming.

Learning Tree Interpretation from Object Representation for Deep Reinforcement Learning

no code implementations NeurIPS 2021 Guiliang Liu, Xiangyu Sun, Oliver Schulte, Pascal Poupart

We propose a Represent And Mimic (RAMi) framework for training 1) an identifiable latent representation to capture the independent factors of variation for the objects and 2) a mimic tree that extracts the causal impact of the latent features on DRL action values.

Deep Reinforcement Learning reinforcement-learning +1

NTS-NOTEARS: Learning Nonparametric DBNs With Prior Knowledge

1 code implementation9 Sep 2021 Xiangyu Sun, Oliver Schulte, Guiliang Liu, Pascal Poupart

We describe NTS-NOTEARS, a score-based structure learning method for time-series data to learn dynamic Bayesian networks (DBNs) that captures nonlinear, lagged (inter-slice) and instantaneous (intra-slice) relations among variables.

Time Series Time Series Analysis

Cracking the Black Box: Distilling Deep Sports Analytics

1 code implementation4 Jun 2020 Xiangyu Sun, Jack Davis, Oliver Schulte, Guiliang Liu

This paper addresses the trade-off between Accuracy and Transparency for deep learning applied to sports analytics.

Deep Learning Sports Analytics

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