Search Results for author: Wei Tsang Ooi

Found 18 papers, 7 papers with code

Why Ask One When You Can Ask $k$? Two-Stage Learning-to-Defer to a Set of Experts

no code implementations17 Apr 2025 Yannis Montreuil, Axel Carlier, Lai Xing Ng, Wei Tsang Ooi

We propose Top-$k$ Learning-to-Defer, a generalization of the classical two-stage L2D framework that allocates each query to the $k$ most confident agents instead of a single one.

Decision Making

EventFly: Event Camera Perception from Ground to the Sky

no code implementations25 Mar 2025 Lingdong Kong, Dongyue Lu, Xiang Xu, Lai Xing Ng, Wei Tsang Ooi, Benoit R. Cottereau

Cross-platform adaptation in event-based dense perception is crucial for deploying event cameras across diverse settings, such as vehicles, drones, and quadrupeds, each with unique motion dynamics, viewpoints, and class distributions.

Sketch and Patch: Efficient 3D Gaussian Representation for Man-Made Scenes

no code implementations22 Jan 2025 Yuang Shi, Simone Gasparini, Géraldine Morin, Chenggang Yang, Wei Tsang Ooi

3D Gaussian Splatting (3DGS) has emerged as a promising representation for photorealistic rendering of 3D scenes.

3DGS Quantization +1

GSVC: Efficient Video Representation and Compression Through 2D Gaussian Splatting

no code implementations21 Jan 2025 Longan Wang, Yuang Shi, Wei Tsang Ooi

3D Gaussian splats have emerged as a revolutionary, effective, learned representation for static 3D scenes.

FlexEvent: Event Camera Object Detection at Arbitrary Frequencies

no code implementations9 Dec 2024 Dongyue Lu, Lingdong Kong, Gim Hee Lee, Camille Simon Chane, Wei Tsang Ooi

Event cameras offer unparalleled advantages for real-time perception in dynamic environments, thanks to their microsecond-level temporal resolution and asynchronous operation.

Object object-detection +1

A Two-Stage Learning-to-Defer Approach for Multi-Task Learning

no code implementations21 Oct 2024 Yannis Montreuil, Shu Heng Yeo, Axel Carlier, Lai Xing Ng, Wei Tsang Ooi

The Two-Stage Learning-to-Defer framework has been extensively studied for classification and, more recently, regression tasks.

Classification Multi-Task Learning +3

Learning-to-Defer for Extractive Question Answering

no code implementations21 Oct 2024 Yannis Montreuil, Axel Carlier, Lai Xing Ng, Wei Tsang Ooi

Pre-trained language models have profoundly impacted the field of extractive question-answering, leveraging large-scale textual corpora to enhance contextual language understanding.

Computational Efficiency Decision Making +2

LapisGS: Layered Progressive 3D Gaussian Splatting for Adaptive Streaming

1 code implementation27 Aug 2024 Yuang Shi, Géraldine Morin, Simone Gasparini, Wei Tsang Ooi

The rise of Extended Reality (XR) requires efficient streaming of 3D online worlds, challenging current 3DGS representations to adapt to bandwidth-constrained environments.

3DGS SSIM

Multi-Modal Data-Efficient 3D Scene Understanding for Autonomous Driving

1 code implementation8 May 2024 Lingdong Kong, Xiang Xu, Jiawei Ren, Wenwei Zhang, Liang Pan, Kai Chen, Wei Tsang Ooi, Ziwei Liu

Efficient data utilization is crucial for advancing 3D scene understanding in autonomous driving, where reliance on heavily human-annotated LiDAR point clouds challenges fully supervised methods.

Autonomous Driving LIDAR Semantic Segmentation +2

CAESAR: Enhancing Federated RL in Heterogeneous MDPs through Convergence-Aware Sampling with Screening

1 code implementation29 Mar 2024 Hei Yi Mak, Flint Xiaofeng Fan, Luca A. Lanzendörfer, Cheston Tan, Wei Tsang Ooi, Roger Wattenhofer

CAESAR is an aggregation strategy used by the server that combines convergence-aware sampling with a screening mechanism.

Prompting a Large Language Model to Generate Diverse Motivational Messages: A Comparison with Human-Written Messages

no code implementations25 Aug 2023 Samuel Rhys Cox, Ashraf Abdul, Wei Tsang Ooi

We then used this same pipeline to generate messages using GPT-4, and compared the collective diversity of messages from: (1) crowd-writers, (2) GPT-4 using the pipeline, and (3 & 4) two baseline GPT-4 prompts.

Diversity Language Modeling +2

SimTeG: A Frustratingly Simple Approach Improves Textual Graph Learning

2 code implementations3 Aug 2023 Keyu Duan, Qian Liu, Tat-Seng Chua, Shuicheng Yan, Wei Tsang Ooi, Qizhe Xie, Junxian He

More recently, with the rapid development of language models (LMs), researchers have focused on leveraging LMs to facilitate the learning of TGs, either by jointly training them in a computationally intensive framework (merging the two stages), or designing complex self-supervised training tasks for feature extraction (enhancing the first stage).

Feature Engineering Graph Learning +4

Shape-CD: Change-Point Detection in Time-Series Data with Shapes and Neurons

no code implementations22 Jul 2020 Varsha Suresh, Wei Tsang Ooi

We found that existing approaches become less accurate when the underlying process is complex and generates large varieties of patterns in the time series.

Change Point Detection Time Series +1

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