Search Results for author: Wei Tsang Ooi

Found 6 papers, 4 papers with code

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.

Language Modelling Large Language Model

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 +3

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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