Search Results for author: Huan Yee Koh

Found 7 papers, 5 papers with code

Graph Spatiotemporal Process for Multivariate Time Series Anomaly Detection with Missing Values

no code implementations11 Jan 2024 Yu Zheng, Huan Yee Koh, Ming Jin, Lianhua Chi, Haishuai Wang, Khoa T. Phan, Yi-Ping Phoebe Chen, Shirui Pan, Wei Xiang

However, real-world time series data is usually not well-structured, posting significant challenges to existing approaches: (1) The existence of missing values in multivariate time series data along variable and time dimensions hinders the effective modeling of interwoven spatial and temporal dependencies, resulting in important patterns being overlooked during model training; (2) Anomaly scoring with irregularly-sampled observations is less explored, making it difficult to use existing detectors for multivariate series without fully-observed values.

Anomaly Detection Time Series +1

Large Language Models for Scientific Synthesis, Inference and Explanation

1 code implementation12 Oct 2023 Yizhen Zheng, Huan Yee Koh, Jiaxin Ju, Anh T. N. Nguyen, Lauren T. May, Geoffrey I. Webb, Shirui Pan

We present a method for using general-purpose large language models to make inferences from scientific datasets of the form usually associated with special-purpose machine learning algorithms.

Code Generation Language Modelling +2

Correlation-aware Spatial-Temporal Graph Learning for Multivariate Time-series Anomaly Detection

1 code implementation17 Jul 2023 Yu Zheng, Huan Yee Koh, Ming Jin, Lianhua Chi, Khoa T. Phan, Shirui Pan, Yi-Ping Phoebe Chen, Wei Xiang

To overcome these limitations, we propose a novel method, correlation-aware spatial-temporal graph learning (termed CST-GL), for time series anomaly detection.

Anomaly Detection Graph Learning +2

A Survey on Graph Neural Networks for Time Series: Forecasting, Classification, Imputation, and Anomaly Detection

1 code implementation7 Jul 2023 Ming Jin, Huan Yee Koh, Qingsong Wen, Daniele Zambon, Cesare Alippi, Geoffrey I. Webb, Irwin King, Shirui Pan

In this survey, we provide a comprehensive review of graph neural networks for time series analysis (GNN4TS), encompassing four fundamental dimensions: forecasting, classification, anomaly detection, and imputation.

Anomaly Detection Imputation +2

How Far are We from Robust Long Abstractive Summarization?

1 code implementation30 Oct 2022 Huan Yee Koh, Jiaxin Ju, He Zhang, Ming Liu, Shirui Pan

For long document abstractive models, we show that the constant strive for state-of-the-art ROUGE results can lead us to generate more relevant summaries but not factual ones.

Abstractive Text Summarization

An Empirical Survey on Long Document Summarization: Datasets, Models and Metrics

1 code implementation3 Jul 2022 Huan Yee Koh, Jiaxin Ju, Ming Liu, Shirui Pan

The empirical analysis includes a study on the intrinsic characteristics of benchmark datasets, a multi-dimensional analysis of summarization models, and a review of the summarization evaluation metrics.

Document Summarization

Leveraging Information Bottleneck for Scientific Document Summarization

no code implementations Findings (EMNLP) 2021 Jiaxin Ju, Ming Liu, Huan Yee Koh, Yuan Jin, Lan Du, Shirui Pan

This paper presents an unsupervised extractive approach to summarize scientific long documents based on the Information Bottleneck principle.

Document Summarization Language Modelling +3

Cannot find the paper you are looking for? You can Submit a new open access paper.